* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
+#include "qemu/units.h"
#include "qemu-version.h"
#include <sys/syscall.h>
#include <sys/resource.h>
#include "qemu/timer.h"
#include "qemu/envlist.h"
#include "elf.h"
-#include "exec/log.h"
#include "trace/control.h"
#include "target_elf.h"
+#include "cpu_loop-common.h"
char *exec_path;
unsigned long guest_base;
int have_guest_base;
-#define EXCP_DUMP(env, fmt, ...) \
-do { \
- CPUState *cs = ENV_GET_CPU(env); \
- fprintf(stderr, fmt , ## __VA_ARGS__); \
- cpu_dump_state(cs, stderr, fprintf, 0); \
- if (qemu_log_separate()) { \
- qemu_log(fmt, ## __VA_ARGS__); \
- log_cpu_state(cs, 0); \
- } \
-} while (0)
-
-/*
- * When running 32-on-64 we should make sure we can fit all of the possible
- * guest address space into a contiguous chunk of virtual host memory.
- *
- * This way we will never overlap with our own libraries or binaries or stack
- * or anything else that QEMU maps.
- *
- * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
- * of the address for the kernel. Some cpus rely on this and user space
- * uses the high bit(s) for pointer tagging and the like. For them, we
- * must preserve the expected address space.
- */
-#ifndef MAX_RESERVED_VA
-# if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
-# if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
- (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
-/* There are a number of places where we assign reserved_va to a variable
- of type abi_ulong and expect it to fit. Avoid the last page. */
-# define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK)
-# else
-# define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
-# endif
-# else
-# define MAX_RESERVED_VA 0
-# endif
-#endif
-
-/* That said, reserving *too* much vm space via mmap can run into problems
- with rlimits, oom due to page table creation, etc. We will still try it,
- if directed by the command-line option, but not by default. */
-#if HOST_LONG_BITS == 64 && TARGET_VIRT_ADDR_SPACE_BITS <= 32
-unsigned long reserved_va = MAX_RESERVED_VA;
-#else
-unsigned long reserved_va;
-#endif
-
-static void usage(int exitcode);
-
-static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
-const char *qemu_uname_release;
-
-/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
- we allocate a bigger stack. Need a better solution, for example
- by remapping the process stack directly at the right place */
-unsigned long guest_stack_size = 8 * 1024 * 1024UL;
-
-void gemu_log(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
-}
-
-#if defined(TARGET_I386)
-int cpu_get_pic_interrupt(CPUX86State *env)
-{
- return -1;
-}
-#endif
-
-/***********************************************************/
-/* Helper routines for implementing atomic operations. */
-
-/* Make sure everything is in a consistent state for calling fork(). */
-void fork_start(void)
-{
- start_exclusive();
- mmap_fork_start();
- qemu_mutex_lock(&tb_ctx.tb_lock);
- cpu_list_lock();
-}
-
-void fork_end(int child)
-{
- mmap_fork_end(child);
- if (child) {
- CPUState *cpu, *next_cpu;
- /* Child processes created by fork() only have a single thread.
- Discard information about the parent threads. */
- CPU_FOREACH_SAFE(cpu, next_cpu) {
- if (cpu != thread_cpu) {
- QTAILQ_REMOVE(&cpus, cpu, node);
- }
- }
- qemu_mutex_init(&tb_ctx.tb_lock);
- qemu_init_cpu_list();
- gdbserver_fork(thread_cpu);
- /* qemu_init_cpu_list() takes care of reinitializing the
- * exclusive state, so we don't need to end_exclusive() here.
- */
- } else {
- qemu_mutex_unlock(&tb_ctx.tb_lock);
- cpu_list_unlock();
- end_exclusive();
- }
-}
-
-#ifdef TARGET_I386
-/***********************************************************/
-/* CPUX86 core interface */
-
-uint64_t cpu_get_tsc(CPUX86State *env)
-{
- return cpu_get_host_ticks();
-}
-
-static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
- int flags)
-{
- unsigned int e1, e2;
- uint32_t *p;
- e1 = (addr << 16) | (limit & 0xffff);
- e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
- e2 |= flags;
- p = ptr;
- p[0] = tswap32(e1);
- p[1] = tswap32(e2);
-}
-
-static uint64_t *idt_table;
-#ifdef TARGET_X86_64
-static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
- uint64_t addr, unsigned int sel)
-{
- uint32_t *p, e1, e2;
- e1 = (addr & 0xffff) | (sel << 16);
- e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
- p = ptr;
- p[0] = tswap32(e1);
- p[1] = tswap32(e2);
- p[2] = tswap32(addr >> 32);
- p[3] = 0;
-}
-/* only dpl matters as we do only user space emulation */
-static void set_idt(int n, unsigned int dpl)
-{
- set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
-}
-#else
-static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
- uint32_t addr, unsigned int sel)
-{
- uint32_t *p, e1, e2;
- e1 = (addr & 0xffff) | (sel << 16);
- e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
- p = ptr;
- p[0] = tswap32(e1);
- p[1] = tswap32(e2);
-}
-
-/* only dpl matters as we do only user space emulation */
-static void set_idt(int n, unsigned int dpl)
-{
- set_gate(idt_table + n, 0, dpl, 0, 0);
-}
-#endif
-
-void cpu_loop(CPUX86State *env)
-{
- CPUState *cs = CPU(x86_env_get_cpu(env));
- int trapnr;
- abi_ulong pc;
- abi_ulong ret;
- target_siginfo_t info;
-
- for(;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch(trapnr) {
- case 0x80:
- /* linux syscall from int $0x80 */
- ret = do_syscall(env,
- env->regs[R_EAX],
- env->regs[R_EBX],
- env->regs[R_ECX],
- env->regs[R_EDX],
- env->regs[R_ESI],
- env->regs[R_EDI],
- env->regs[R_EBP],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->eip -= 2;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[R_EAX] = ret;
- }
- break;
-#ifndef TARGET_ABI32
- case EXCP_SYSCALL:
- /* linux syscall from syscall instruction */
- ret = do_syscall(env,
- env->regs[R_EAX],
- env->regs[R_EDI],
- env->regs[R_ESI],
- env->regs[R_EDX],
- env->regs[10],
- env->regs[8],
- env->regs[9],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->eip -= 2;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[R_EAX] = ret;
- }
- break;
-#endif
- case EXCP0B_NOSEG:
- case EXCP0C_STACK:
- info.si_signo = TARGET_SIGBUS;
- info.si_errno = 0;
- info.si_code = TARGET_SI_KERNEL;
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP0D_GPF:
- /* XXX: potential problem if ABI32 */
-#ifndef TARGET_X86_64
- if (env->eflags & VM_MASK) {
- handle_vm86_fault(env);
- } else
-#endif
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SI_KERNEL;
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP0E_PAGE:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- if (!(env->error_code & 1))
- info.si_code = TARGET_SEGV_MAPERR;
- else
- info.si_code = TARGET_SEGV_ACCERR;
- info._sifields._sigfault._addr = env->cr[2];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP00_DIVZ:
-#ifndef TARGET_X86_64
- if (env->eflags & VM_MASK) {
- handle_vm86_trap(env, trapnr);
- } else
-#endif
- {
- /* division by zero */
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_INTDIV;
- info._sifields._sigfault._addr = env->eip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP01_DB:
- case EXCP03_INT3:
-#ifndef TARGET_X86_64
- if (env->eflags & VM_MASK) {
- handle_vm86_trap(env, trapnr);
- } else
-#endif
- {
- info.si_signo = TARGET_SIGTRAP;
- info.si_errno = 0;
- if (trapnr == EXCP01_DB) {
- info.si_code = TARGET_TRAP_BRKPT;
- info._sifields._sigfault._addr = env->eip;
- } else {
- info.si_code = TARGET_SI_KERNEL;
- info._sifields._sigfault._addr = 0;
- }
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP04_INTO:
- case EXCP05_BOUND:
-#ifndef TARGET_X86_64
- if (env->eflags & VM_MASK) {
- handle_vm86_trap(env, trapnr);
- } else
-#endif
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SI_KERNEL;
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP06_ILLOP:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPN;
- info._sifields._sigfault._addr = env->eip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- pc = env->segs[R_CS].base + env->eip;
- EXCP_DUMP(env, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
- (long)pc, trapnr);
- abort();
- }
- process_pending_signals(env);
- }
-}
-#endif
-
-#ifdef TARGET_ARM
-
-#define get_user_code_u32(x, gaddr, env) \
- ({ abi_long __r = get_user_u32((x), (gaddr)); \
- if (!__r && bswap_code(arm_sctlr_b(env))) { \
- (x) = bswap32(x); \
- } \
- __r; \
- })
-
-#define get_user_code_u16(x, gaddr, env) \
- ({ abi_long __r = get_user_u16((x), (gaddr)); \
- if (!__r && bswap_code(arm_sctlr_b(env))) { \
- (x) = bswap16(x); \
- } \
- __r; \
- })
-
-#define get_user_data_u32(x, gaddr, env) \
- ({ abi_long __r = get_user_u32((x), (gaddr)); \
- if (!__r && arm_cpu_bswap_data(env)) { \
- (x) = bswap32(x); \
- } \
- __r; \
- })
-
-#define get_user_data_u16(x, gaddr, env) \
- ({ abi_long __r = get_user_u16((x), (gaddr)); \
- if (!__r && arm_cpu_bswap_data(env)) { \
- (x) = bswap16(x); \
- } \
- __r; \
- })
-
-#define put_user_data_u32(x, gaddr, env) \
- ({ typeof(x) __x = (x); \
- if (arm_cpu_bswap_data(env)) { \
- __x = bswap32(__x); \
- } \
- put_user_u32(__x, (gaddr)); \
- })
-
-#define put_user_data_u16(x, gaddr, env) \
- ({ typeof(x) __x = (x); \
- if (arm_cpu_bswap_data(env)) { \
- __x = bswap16(__x); \
- } \
- put_user_u16(__x, (gaddr)); \
- })
-
-#ifdef TARGET_ABI32
-/* Commpage handling -- there is no commpage for AArch64 */
-
-/*
- * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt
- * Input:
- * r0 = pointer to oldval
- * r1 = pointer to newval
- * r2 = pointer to target value
- *
- * Output:
- * r0 = 0 if *ptr was changed, non-0 if no exchange happened
- * C set if *ptr was changed, clear if no exchange happened
- *
- * Note segv's in kernel helpers are a bit tricky, we can set the
- * data address sensibly but the PC address is just the entry point.
- */
-static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
-{
- uint64_t oldval, newval, val;
- uint32_t addr, cpsr;
- target_siginfo_t info;
-
- /* Based on the 32 bit code in do_kernel_trap */
-
- /* XXX: This only works between threads, not between processes.
- It's probably possible to implement this with native host
- operations. However things like ldrex/strex are much harder so
- there's not much point trying. */
- start_exclusive();
- cpsr = cpsr_read(env);
- addr = env->regs[2];
-
- if (get_user_u64(oldval, env->regs[0])) {
- env->exception.vaddress = env->regs[0];
- goto segv;
- };
-
- if (get_user_u64(newval, env->regs[1])) {
- env->exception.vaddress = env->regs[1];
- goto segv;
- };
-
- if (get_user_u64(val, addr)) {
- env->exception.vaddress = addr;
- goto segv;
- }
-
- if (val == oldval) {
- val = newval;
-
- if (put_user_u64(val, addr)) {
- env->exception.vaddress = addr;
- goto segv;
- };
-
- env->regs[0] = 0;
- cpsr |= CPSR_C;
- } else {
- env->regs[0] = -1;
- cpsr &= ~CPSR_C;
- }
- cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr);
- end_exclusive();
- return;
-
-segv:
- end_exclusive();
- /* We get the PC of the entry address - which is as good as anything,
- on a real kernel what you get depends on which mode it uses. */
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->exception.vaddress;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-}
-
-/* Handle a jump to the kernel code page. */
-static int
-do_kernel_trap(CPUARMState *env)
-{
- uint32_t addr;
- uint32_t cpsr;
- uint32_t val;
-
- switch (env->regs[15]) {
- case 0xffff0fa0: /* __kernel_memory_barrier */
- /* ??? No-op. Will need to do better for SMP. */
- break;
- case 0xffff0fc0: /* __kernel_cmpxchg */
- /* XXX: This only works between threads, not between processes.
- It's probably possible to implement this with native host
- operations. However things like ldrex/strex are much harder so
- there's not much point trying. */
- start_exclusive();
- cpsr = cpsr_read(env);
- addr = env->regs[2];
- /* FIXME: This should SEGV if the access fails. */
- if (get_user_u32(val, addr))
- val = ~env->regs[0];
- if (val == env->regs[0]) {
- val = env->regs[1];
- /* FIXME: Check for segfaults. */
- put_user_u32(val, addr);
- env->regs[0] = 0;
- cpsr |= CPSR_C;
- } else {
- env->regs[0] = -1;
- cpsr &= ~CPSR_C;
- }
- cpsr_write(env, cpsr, CPSR_C, CPSRWriteByInstr);
- end_exclusive();
- break;
- case 0xffff0fe0: /* __kernel_get_tls */
- env->regs[0] = cpu_get_tls(env);
- break;
- case 0xffff0f60: /* __kernel_cmpxchg64 */
- arm_kernel_cmpxchg64_helper(env);
- break;
-
- default:
- return 1;
- }
- /* Jump back to the caller. */
- addr = env->regs[14];
- if (addr & 1) {
- env->thumb = 1;
- addr &= ~1;
- }
- env->regs[15] = addr;
-
- return 0;
-}
-
-void cpu_loop(CPUARMState *env)
-{
- CPUState *cs = CPU(arm_env_get_cpu(env));
- int trapnr;
- unsigned int n, insn;
- target_siginfo_t info;
- uint32_t addr;
- abi_ulong ret;
-
- for(;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch(trapnr) {
- case EXCP_UDEF:
- case EXCP_NOCP:
- case EXCP_INVSTATE:
- {
- TaskState *ts = cs->opaque;
- uint32_t opcode;
- int rc;
-
- /* we handle the FPU emulation here, as Linux */
- /* we get the opcode */
- /* FIXME - what to do if get_user() fails? */
- get_user_code_u32(opcode, env->regs[15], env);
-
- rc = EmulateAll(opcode, &ts->fpa, env);
- if (rc == 0) { /* illegal instruction */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPN;
- info._sifields._sigfault._addr = env->regs[15];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- } else if (rc < 0) { /* FP exception */
- int arm_fpe=0;
-
- /* translate softfloat flags to FPSR flags */
- if (-rc & float_flag_invalid)
- arm_fpe |= BIT_IOC;
- if (-rc & float_flag_divbyzero)
- arm_fpe |= BIT_DZC;
- if (-rc & float_flag_overflow)
- arm_fpe |= BIT_OFC;
- if (-rc & float_flag_underflow)
- arm_fpe |= BIT_UFC;
- if (-rc & float_flag_inexact)
- arm_fpe |= BIT_IXC;
-
- FPSR fpsr = ts->fpa.fpsr;
- //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
-
- if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
-
- /* ordered by priority, least first */
- if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
- if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
- if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
- if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
- if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
-
- info._sifields._sigfault._addr = env->regs[15];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- } else {
- env->regs[15] += 4;
- }
-
- /* accumulate unenabled exceptions */
- if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
- fpsr |= BIT_IXC;
- if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
- fpsr |= BIT_UFC;
- if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
- fpsr |= BIT_OFC;
- if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
- fpsr |= BIT_DZC;
- if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
- fpsr |= BIT_IOC;
- ts->fpa.fpsr=fpsr;
- } else { /* everything OK */
- /* increment PC */
- env->regs[15] += 4;
- }
- }
- break;
- case EXCP_SWI:
- case EXCP_BKPT:
- {
- env->eabi = 1;
- /* system call */
- if (trapnr == EXCP_BKPT) {
- if (env->thumb) {
- /* FIXME - what to do if get_user() fails? */
- get_user_code_u16(insn, env->regs[15], env);
- n = insn & 0xff;
- env->regs[15] += 2;
- } else {
- /* FIXME - what to do if get_user() fails? */
- get_user_code_u32(insn, env->regs[15], env);
- n = (insn & 0xf) | ((insn >> 4) & 0xff0);
- env->regs[15] += 4;
- }
- } else {
- if (env->thumb) {
- /* FIXME - what to do if get_user() fails? */
- get_user_code_u16(insn, env->regs[15] - 2, env);
- n = insn & 0xff;
- } else {
- /* FIXME - what to do if get_user() fails? */
- get_user_code_u32(insn, env->regs[15] - 4, env);
- n = insn & 0xffffff;
- }
- }
-
- if (n == ARM_NR_cacheflush) {
- /* nop */
- } else if (n == ARM_NR_semihosting
- || n == ARM_NR_thumb_semihosting) {
- env->regs[0] = do_arm_semihosting (env);
- } else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) {
- /* linux syscall */
- if (env->thumb || n == 0) {
- n = env->regs[7];
- } else {
- n -= ARM_SYSCALL_BASE;
- env->eabi = 0;
- }
- if ( n > ARM_NR_BASE) {
- switch (n) {
- case ARM_NR_cacheflush:
- /* nop */
- break;
- case ARM_NR_set_tls:
- cpu_set_tls(env, env->regs[0]);
- env->regs[0] = 0;
- break;
- case ARM_NR_breakpoint:
- env->regs[15] -= env->thumb ? 2 : 4;
- goto excp_debug;
- default:
- gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
- n);
- env->regs[0] = -TARGET_ENOSYS;
- break;
- }
- } else {
- ret = do_syscall(env,
- n,
- env->regs[0],
- env->regs[1],
- env->regs[2],
- env->regs[3],
- env->regs[4],
- env->regs[5],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->regs[15] -= env->thumb ? 2 : 4;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[0] = ret;
- }
- }
- } else {
- goto error;
- }
- }
- break;
- case EXCP_SEMIHOST:
- env->regs[0] = do_arm_semihosting(env);
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_PREFETCH_ABORT:
- case EXCP_DATA_ABORT:
- addr = env->exception.vaddress;
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = addr;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_DEBUG:
- excp_debug:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_KERNEL_TRAP:
- if (do_kernel_trap(env))
- goto error;
- break;
- case EXCP_YIELD:
- /* nothing to do here for user-mode, just resume guest code */
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- error:
- EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
- abort();
- }
- process_pending_signals(env);
- }
-}
-
-#else
-
-/* AArch64 main loop */
-void cpu_loop(CPUARMState *env)
-{
- CPUState *cs = CPU(arm_env_get_cpu(env));
- int trapnr, sig;
- abi_long ret;
- target_siginfo_t info;
-
- for (;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case EXCP_SWI:
- ret = do_syscall(env,
- env->xregs[8],
- env->xregs[0],
- env->xregs[1],
- env->xregs[2],
- env->xregs[3],
- env->xregs[4],
- env->xregs[5],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 4;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->xregs[0] = ret;
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_UDEF:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPN;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_PREFETCH_ABORT:
- case EXCP_DATA_ABORT:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->exception.vaddress;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_DEBUG:
- case EXCP_BKPT:
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig) {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_SEMIHOST:
- env->xregs[0] = do_arm_semihosting(env);
- break;
- case EXCP_YIELD:
- /* nothing to do here for user-mode, just resume guest code */
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
- abort();
- }
- process_pending_signals(env);
- /* Exception return on AArch64 always clears the exclusive monitor,
- * so any return to running guest code implies this.
- */
- env->exclusive_addr = -1;
- }
-}
-#endif /* ndef TARGET_ABI32 */
-
-#endif
-
-#ifdef TARGET_SPARC
-#define SPARC64_STACK_BIAS 2047
-
-//#define DEBUG_WIN
-
-/* WARNING: dealing with register windows _is_ complicated. More info
- can be found at http://www.sics.se/~psm/sparcstack.html */
-static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
-{
- index = (index + cwp * 16) % (16 * env->nwindows);
- /* wrap handling : if cwp is on the last window, then we use the
- registers 'after' the end */
- if (index < 8 && env->cwp == env->nwindows - 1)
- index += 16 * env->nwindows;
- return index;
-}
-
-/* save the register window 'cwp1' */
-static inline void save_window_offset(CPUSPARCState *env, int cwp1)
-{
- unsigned int i;
- abi_ulong sp_ptr;
-
- sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
-#ifdef TARGET_SPARC64
- if (sp_ptr & 3)
- sp_ptr += SPARC64_STACK_BIAS;
-#endif
-#if defined(DEBUG_WIN)
- printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
- sp_ptr, cwp1);
-#endif
- for(i = 0; i < 16; i++) {
- /* FIXME - what to do if put_user() fails? */
- put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
- sp_ptr += sizeof(abi_ulong);
- }
-}
-
-static void save_window(CPUSPARCState *env)
-{
-#ifndef TARGET_SPARC64
- unsigned int new_wim;
- new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
- ((1LL << env->nwindows) - 1);
- save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
- env->wim = new_wim;
-#else
- save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
- env->cansave++;
- env->canrestore--;
-#endif
-}
-
-static void restore_window(CPUSPARCState *env)
-{
-#ifndef TARGET_SPARC64
- unsigned int new_wim;
-#endif
- unsigned int i, cwp1;
- abi_ulong sp_ptr;
-
-#ifndef TARGET_SPARC64
- new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
- ((1LL << env->nwindows) - 1);
-#endif
-
- /* restore the invalid window */
- cwp1 = cpu_cwp_inc(env, env->cwp + 1);
- sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
-#ifdef TARGET_SPARC64
- if (sp_ptr & 3)
- sp_ptr += SPARC64_STACK_BIAS;
-#endif
-#if defined(DEBUG_WIN)
- printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
- sp_ptr, cwp1);
-#endif
- for(i = 0; i < 16; i++) {
- /* FIXME - what to do if get_user() fails? */
- get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
- sp_ptr += sizeof(abi_ulong);
- }
-#ifdef TARGET_SPARC64
- env->canrestore++;
- if (env->cleanwin < env->nwindows - 1)
- env->cleanwin++;
- env->cansave--;
-#else
- env->wim = new_wim;
-#endif
-}
-
-static void flush_windows(CPUSPARCState *env)
-{
- int offset, cwp1;
-
- offset = 1;
- for(;;) {
- /* if restore would invoke restore_window(), then we can stop */
- cwp1 = cpu_cwp_inc(env, env->cwp + offset);
-#ifndef TARGET_SPARC64
- if (env->wim & (1 << cwp1))
- break;
-#else
- if (env->canrestore == 0)
- break;
- env->cansave++;
- env->canrestore--;
-#endif
- save_window_offset(env, cwp1);
- offset++;
- }
- cwp1 = cpu_cwp_inc(env, env->cwp + 1);
-#ifndef TARGET_SPARC64
- /* set wim so that restore will reload the registers */
- env->wim = 1 << cwp1;
-#endif
-#if defined(DEBUG_WIN)
- printf("flush_windows: nb=%d\n", offset - 1);
-#endif
-}
-
-void cpu_loop (CPUSPARCState *env)
-{
- CPUState *cs = CPU(sparc_env_get_cpu(env));
- int trapnr;
- abi_long ret;
- target_siginfo_t info;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- /* Compute PSR before exposing state. */
- if (env->cc_op != CC_OP_FLAGS) {
- cpu_get_psr(env);
- }
-
- switch (trapnr) {
-#ifndef TARGET_SPARC64
- case 0x88:
- case 0x90:
-#else
- case 0x110:
- case 0x16d:
-#endif
- ret = do_syscall (env, env->gregs[1],
- env->regwptr[0], env->regwptr[1],
- env->regwptr[2], env->regwptr[3],
- env->regwptr[4], env->regwptr[5],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS || ret == -TARGET_QEMU_ESIGRETURN) {
- break;
- }
- if ((abi_ulong)ret >= (abi_ulong)(-515)) {
-#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
- env->xcc |= PSR_CARRY;
-#else
- env->psr |= PSR_CARRY;
-#endif
- ret = -ret;
- } else {
-#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
- env->xcc &= ~PSR_CARRY;
-#else
- env->psr &= ~PSR_CARRY;
-#endif
- }
- env->regwptr[0] = ret;
- /* next instruction */
- env->pc = env->npc;
- env->npc = env->npc + 4;
- break;
- case 0x83: /* flush windows */
-#ifdef TARGET_ABI32
- case 0x103:
-#endif
- flush_windows(env);
- /* next instruction */
- env->pc = env->npc;
- env->npc = env->npc + 4;
- break;
-#ifndef TARGET_SPARC64
- case TT_WIN_OVF: /* window overflow */
- save_window(env);
- break;
- case TT_WIN_UNF: /* window underflow */
- restore_window(env);
- break;
- case TT_TFAULT:
- case TT_DFAULT:
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->mmuregs[4];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
-#else
- case TT_SPILL: /* window overflow */
- save_window(env);
- break;
- case TT_FILL: /* window underflow */
- restore_window(env);
- break;
- case TT_TFAULT:
- case TT_DFAULT:
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- if (trapnr == TT_DFAULT)
- info._sifields._sigfault._addr = env->dmmu.mmuregs[4];
- else
- info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
-#ifndef TARGET_ABI32
- case 0x16e:
- flush_windows(env);
- sparc64_get_context(env);
- break;
- case 0x16f:
- flush_windows(env);
- sparc64_set_context(env);
- break;
-#endif
-#endif
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case TT_ILL_INSN:
- {
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPC;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- printf ("Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
- }
-}
-
-#endif
-
-#ifdef TARGET_PPC
-static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
-{
- return cpu_get_host_ticks();
-}
-
-uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
-{
- return cpu_ppc_get_tb(env);
-}
-
-uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
-{
- return cpu_ppc_get_tb(env) >> 32;
-}
-
-uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
-{
- return cpu_ppc_get_tb(env);
-}
-
-uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
-{
- return cpu_ppc_get_tb(env) >> 32;
-}
-
-uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
-__attribute__ (( alias ("cpu_ppc_load_tbu") ));
-
-uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
-{
- return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
-}
-
-/* XXX: to be fixed */
-int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
-{
- return -1;
-}
-
-int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
-{
- return -1;
-}
-
-static int do_store_exclusive(CPUPPCState *env)
-{
- target_ulong addr;
- target_ulong page_addr;
- target_ulong val, val2 __attribute__((unused)) = 0;
- int flags;
- int segv = 0;
-
- addr = env->reserve_ea;
- page_addr = addr & TARGET_PAGE_MASK;
- start_exclusive();
- mmap_lock();
- flags = page_get_flags(page_addr);
- if ((flags & PAGE_READ) == 0) {
- segv = 1;
- } else {
- int reg = env->reserve_info & 0x1f;
- int size = env->reserve_info >> 5;
- int stored = 0;
-
- if (addr == env->reserve_addr) {
- switch (size) {
- case 1: segv = get_user_u8(val, addr); break;
- case 2: segv = get_user_u16(val, addr); break;
- case 4: segv = get_user_u32(val, addr); break;
-#if defined(TARGET_PPC64)
- case 8: segv = get_user_u64(val, addr); break;
- case 16: {
- segv = get_user_u64(val, addr);
- if (!segv) {
- segv = get_user_u64(val2, addr + 8);
- }
- break;
- }
-#endif
- default: abort();
- }
- if (!segv && val == env->reserve_val) {
- val = env->gpr[reg];
- switch (size) {
- case 1: segv = put_user_u8(val, addr); break;
- case 2: segv = put_user_u16(val, addr); break;
- case 4: segv = put_user_u32(val, addr); break;
-#if defined(TARGET_PPC64)
- case 8: segv = put_user_u64(val, addr); break;
- case 16: {
- if (val2 == env->reserve_val2) {
- if (msr_le) {
- val2 = val;
- val = env->gpr[reg+1];
- } else {
- val2 = env->gpr[reg+1];
- }
- segv = put_user_u64(val, addr);
- if (!segv) {
- segv = put_user_u64(val2, addr + 8);
- }
- }
- break;
- }
-#endif
- default: abort();
- }
- if (!segv) {
- stored = 1;
- }
- }
- }
- env->crf[0] = (stored << 1) | xer_so;
- env->reserve_addr = (target_ulong)-1;
- }
- if (!segv) {
- env->nip += 4;
- }
- mmap_unlock();
- end_exclusive();
- return segv;
-}
-
-void cpu_loop(CPUPPCState *env)
-{
- CPUState *cs = CPU(ppc_env_get_cpu(env));
- target_siginfo_t info;
- int trapnr;
- target_ulong ret;
-
- for(;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch(trapnr) {
- case POWERPC_EXCP_NONE:
- /* Just go on */
- break;
- case POWERPC_EXCP_CRITICAL: /* Critical input */
- cpu_abort(cs, "Critical interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_MCHECK: /* Machine check exception */
- cpu_abort(cs, "Machine check exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_DSI: /* Data storage exception */
- /* XXX: check this. Seems bugged */
- switch (env->error_code & 0xFF000000) {
- case 0x40000000:
- case 0x42000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- case 0x04000000:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLADR;
- break;
- case 0x08000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- break;
- default:
- /* Let's send a regular segfault... */
- EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
- env->error_code);
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- }
- info._sifields._sigfault._addr = env->spr[SPR_DAR];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_ISI: /* Instruction storage exception */
- /* XXX: check this */
- switch (env->error_code & 0xFF000000) {
- case 0x40000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- case 0x10000000:
- case 0x08000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- break;
- default:
- /* Let's send a regular segfault... */
- EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
- env->error_code);
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- }
- info._sifields._sigfault._addr = env->nip - 4;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_EXTERNAL: /* External input */
- cpu_abort(cs, "External interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_ALIGN: /* Alignment exception */
- /* XXX: check this */
- info.si_signo = TARGET_SIGBUS;
- info.si_errno = 0;
- info.si_code = TARGET_BUS_ADRALN;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_PROGRAM: /* Program exception */
- case POWERPC_EXCP_HV_EMU: /* HV emulation */
- /* XXX: check this */
- switch (env->error_code & ~0xF) {
- case POWERPC_EXCP_FP:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- switch (env->error_code & 0xF) {
- case POWERPC_EXCP_FP_OX:
- info.si_code = TARGET_FPE_FLTOVF;
- break;
- case POWERPC_EXCP_FP_UX:
- info.si_code = TARGET_FPE_FLTUND;
- break;
- case POWERPC_EXCP_FP_ZX:
- case POWERPC_EXCP_FP_VXZDZ:
- info.si_code = TARGET_FPE_FLTDIV;
- break;
- case POWERPC_EXCP_FP_XX:
- info.si_code = TARGET_FPE_FLTRES;
- break;
- case POWERPC_EXCP_FP_VXSOFT:
- info.si_code = TARGET_FPE_FLTINV;
- break;
- case POWERPC_EXCP_FP_VXSNAN:
- case POWERPC_EXCP_FP_VXISI:
- case POWERPC_EXCP_FP_VXIDI:
- case POWERPC_EXCP_FP_VXIMZ:
- case POWERPC_EXCP_FP_VXVC:
- case POWERPC_EXCP_FP_VXSQRT:
- case POWERPC_EXCP_FP_VXCVI:
- info.si_code = TARGET_FPE_FLTSUB;
- break;
- default:
- EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
- env->error_code);
- break;
- }
- break;
- case POWERPC_EXCP_INVAL:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- switch (env->error_code & 0xF) {
- case POWERPC_EXCP_INVAL_INVAL:
- info.si_code = TARGET_ILL_ILLOPC;
- break;
- case POWERPC_EXCP_INVAL_LSWX:
- info.si_code = TARGET_ILL_ILLOPN;
- break;
- case POWERPC_EXCP_INVAL_SPR:
- info.si_code = TARGET_ILL_PRVREG;
- break;
- case POWERPC_EXCP_INVAL_FP:
- info.si_code = TARGET_ILL_COPROC;
- break;
- default:
- EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
- env->error_code & 0xF);
- info.si_code = TARGET_ILL_ILLADR;
- break;
- }
- break;
- case POWERPC_EXCP_PRIV:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- switch (env->error_code & 0xF) {
- case POWERPC_EXCP_PRIV_OPC:
- info.si_code = TARGET_ILL_PRVOPC;
- break;
- case POWERPC_EXCP_PRIV_REG:
- info.si_code = TARGET_ILL_PRVREG;
- break;
- default:
- EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
- env->error_code & 0xF);
- info.si_code = TARGET_ILL_PRVOPC;
- break;
- }
- break;
- case POWERPC_EXCP_TRAP:
- cpu_abort(cs, "Tried to call a TRAP\n");
- break;
- default:
- /* Should not happen ! */
- cpu_abort(cs, "Unknown program exception (%02x)\n",
- env->error_code);
- break;
- }
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_SYSCALL: /* System call exception */
- cpu_abort(cs, "Syscall exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_DECR: /* Decrementer exception */
- cpu_abort(cs, "Decrementer interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
- cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
- cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_DTLB: /* Data TLB error */
- cpu_abort(cs, "Data TLB exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_ITLB: /* Instruction TLB error */
- cpu_abort(cs, "Instruction TLB exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
- cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
- break;
- case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
- cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
- break;
- case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
- cpu_abort(cs, "Performance monitor exception not handled\n");
- break;
- case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
- cpu_abort(cs, "Doorbell interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
- cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_RESET: /* System reset exception */
- cpu_abort(cs, "Reset interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_DSEG: /* Data segment exception */
- cpu_abort(cs, "Data segment exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_ISEG: /* Instruction segment exception */
- cpu_abort(cs, "Instruction segment exception "
- "while in user mode. Aborting\n");
- break;
- /* PowerPC 64 with hypervisor mode support */
- case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
- cpu_abort(cs, "Hypervisor decrementer interrupt "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_TRACE: /* Trace exception */
- /* Nothing to do:
- * we use this exception to emulate step-by-step execution mode.
- */
- break;
- /* PowerPC 64 with hypervisor mode support */
- case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
- cpu_abort(cs, "Hypervisor data storage exception "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
- cpu_abort(cs, "Hypervisor instruction storage exception "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
- cpu_abort(cs, "Hypervisor data segment exception "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
- cpu_abort(cs, "Hypervisor instruction segment exception "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_VPU: /* Vector unavailable exception */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
- cpu_abort(cs, "Programmable interval timer interrupt "
- "while in user mode. Aborting\n");
- break;
- case POWERPC_EXCP_IO: /* IO error exception */
- cpu_abort(cs, "IO error exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_RUNM: /* Run mode exception */
- cpu_abort(cs, "Run mode exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_EMUL: /* Emulation trap exception */
- cpu_abort(cs, "Emulation trap exception not handled\n");
- break;
- case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
- cpu_abort(cs, "Instruction fetch TLB exception "
- "while in user-mode. Aborting");
- break;
- case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
- cpu_abort(cs, "Data load TLB exception while in user-mode. "
- "Aborting");
- break;
- case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
- cpu_abort(cs, "Data store TLB exception while in user-mode. "
- "Aborting");
- break;
- case POWERPC_EXCP_FPA: /* Floating-point assist exception */
- cpu_abort(cs, "Floating-point assist exception not handled\n");
- break;
- case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
- cpu_abort(cs, "Instruction address breakpoint exception "
- "not handled\n");
- break;
- case POWERPC_EXCP_SMI: /* System management interrupt */
- cpu_abort(cs, "System management interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_THERM: /* Thermal interrupt */
- cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
- cpu_abort(cs, "Performance monitor exception not handled\n");
- break;
- case POWERPC_EXCP_VPUA: /* Vector assist exception */
- cpu_abort(cs, "Vector assist exception not handled\n");
- break;
- case POWERPC_EXCP_SOFTP: /* Soft patch exception */
- cpu_abort(cs, "Soft patch exception not handled\n");
- break;
- case POWERPC_EXCP_MAINT: /* Maintenance exception */
- cpu_abort(cs, "Maintenance exception while in user mode. "
- "Aborting\n");
- break;
- case POWERPC_EXCP_STOP: /* stop translation */
- /* We did invalidate the instruction cache. Go on */
- break;
- case POWERPC_EXCP_BRANCH: /* branch instruction: */
- /* We just stopped because of a branch. Go on */
- break;
- case POWERPC_EXCP_SYSCALL_USER:
- /* system call in user-mode emulation */
- /* WARNING:
- * PPC ABI uses overflow flag in cr0 to signal an error
- * in syscalls.
- */
- env->crf[0] &= ~0x1;
- env->nip += 4;
- ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
- env->gpr[5], env->gpr[6], env->gpr[7],
- env->gpr[8], 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->nip -= 4;
- break;
- }
- if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
- /* Returning from a successful sigreturn syscall.
- Avoid corrupting register state. */
- break;
- }
- if (ret > (target_ulong)(-515)) {
- env->crf[0] |= 0x1;
- ret = -ret;
- }
- env->gpr[3] = ret;
- break;
- case POWERPC_EXCP_STCX:
- if (do_store_exclusive(env)) {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig) {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- cpu_abort(cs, "Unknown exception 0x%x. Aborting\n", trapnr);
- break;
- }
- process_pending_signals(env);
- }
-}
-#endif
-
-#ifdef TARGET_MIPS
-
-# ifdef TARGET_ABI_MIPSO32
-# define MIPS_SYS(name, args) args,
-static const uint8_t mips_syscall_args[] = {
- MIPS_SYS(sys_syscall , 8) /* 4000 */
- MIPS_SYS(sys_exit , 1)
- MIPS_SYS(sys_fork , 0)
- MIPS_SYS(sys_read , 3)
- MIPS_SYS(sys_write , 3)
- MIPS_SYS(sys_open , 3) /* 4005 */
- MIPS_SYS(sys_close , 1)
- MIPS_SYS(sys_waitpid , 3)
- MIPS_SYS(sys_creat , 2)
- MIPS_SYS(sys_link , 2)
- MIPS_SYS(sys_unlink , 1) /* 4010 */
- MIPS_SYS(sys_execve , 0)
- MIPS_SYS(sys_chdir , 1)
- MIPS_SYS(sys_time , 1)
- MIPS_SYS(sys_mknod , 3)
- MIPS_SYS(sys_chmod , 2) /* 4015 */
- MIPS_SYS(sys_lchown , 3)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
- MIPS_SYS(sys_lseek , 3)
- MIPS_SYS(sys_getpid , 0) /* 4020 */
- MIPS_SYS(sys_mount , 5)
- MIPS_SYS(sys_umount , 1)
- MIPS_SYS(sys_setuid , 1)
- MIPS_SYS(sys_getuid , 0)
- MIPS_SYS(sys_stime , 1) /* 4025 */
- MIPS_SYS(sys_ptrace , 4)
- MIPS_SYS(sys_alarm , 1)
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
- MIPS_SYS(sys_pause , 0)
- MIPS_SYS(sys_utime , 2) /* 4030 */
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_access , 2)
- MIPS_SYS(sys_nice , 1)
- MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
- MIPS_SYS(sys_sync , 0)
- MIPS_SYS(sys_kill , 2)
- MIPS_SYS(sys_rename , 2)
- MIPS_SYS(sys_mkdir , 2)
- MIPS_SYS(sys_rmdir , 1) /* 4040 */
- MIPS_SYS(sys_dup , 1)
- MIPS_SYS(sys_pipe , 0)
- MIPS_SYS(sys_times , 1)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_brk , 1) /* 4045 */
- MIPS_SYS(sys_setgid , 1)
- MIPS_SYS(sys_getgid , 0)
- MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
- MIPS_SYS(sys_geteuid , 0)
- MIPS_SYS(sys_getegid , 0) /* 4050 */
- MIPS_SYS(sys_acct , 0)
- MIPS_SYS(sys_umount2 , 2)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_ioctl , 3)
- MIPS_SYS(sys_fcntl , 3) /* 4055 */
- MIPS_SYS(sys_ni_syscall , 2)
- MIPS_SYS(sys_setpgid , 2)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_olduname , 1)
- MIPS_SYS(sys_umask , 1) /* 4060 */
- MIPS_SYS(sys_chroot , 1)
- MIPS_SYS(sys_ustat , 2)
- MIPS_SYS(sys_dup2 , 2)
- MIPS_SYS(sys_getppid , 0)
- MIPS_SYS(sys_getpgrp , 0) /* 4065 */
- MIPS_SYS(sys_setsid , 0)
- MIPS_SYS(sys_sigaction , 3)
- MIPS_SYS(sys_sgetmask , 0)
- MIPS_SYS(sys_ssetmask , 1)
- MIPS_SYS(sys_setreuid , 2) /* 4070 */
- MIPS_SYS(sys_setregid , 2)
- MIPS_SYS(sys_sigsuspend , 0)
- MIPS_SYS(sys_sigpending , 1)
- MIPS_SYS(sys_sethostname , 2)
- MIPS_SYS(sys_setrlimit , 2) /* 4075 */
- MIPS_SYS(sys_getrlimit , 2)
- MIPS_SYS(sys_getrusage , 2)
- MIPS_SYS(sys_gettimeofday, 2)
- MIPS_SYS(sys_settimeofday, 2)
- MIPS_SYS(sys_getgroups , 2) /* 4080 */
- MIPS_SYS(sys_setgroups , 2)
- MIPS_SYS(sys_ni_syscall , 0) /* old_select */
- MIPS_SYS(sys_symlink , 2)
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
- MIPS_SYS(sys_readlink , 3) /* 4085 */
- MIPS_SYS(sys_uselib , 1)
- MIPS_SYS(sys_swapon , 2)
- MIPS_SYS(sys_reboot , 3)
- MIPS_SYS(old_readdir , 3)
- MIPS_SYS(old_mmap , 6) /* 4090 */
- MIPS_SYS(sys_munmap , 2)
- MIPS_SYS(sys_truncate , 2)
- MIPS_SYS(sys_ftruncate , 2)
- MIPS_SYS(sys_fchmod , 2)
- MIPS_SYS(sys_fchown , 3) /* 4095 */
- MIPS_SYS(sys_getpriority , 2)
- MIPS_SYS(sys_setpriority , 3)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_statfs , 2)
- MIPS_SYS(sys_fstatfs , 2) /* 4100 */
- MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
- MIPS_SYS(sys_socketcall , 2)
- MIPS_SYS(sys_syslog , 3)
- MIPS_SYS(sys_setitimer , 3)
- MIPS_SYS(sys_getitimer , 2) /* 4105 */
- MIPS_SYS(sys_newstat , 2)
- MIPS_SYS(sys_newlstat , 2)
- MIPS_SYS(sys_newfstat , 2)
- MIPS_SYS(sys_uname , 1)
- MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
- MIPS_SYS(sys_vhangup , 0)
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
- MIPS_SYS(sys_wait4 , 4)
- MIPS_SYS(sys_swapoff , 1) /* 4115 */
- MIPS_SYS(sys_sysinfo , 1)
- MIPS_SYS(sys_ipc , 6)
- MIPS_SYS(sys_fsync , 1)
- MIPS_SYS(sys_sigreturn , 0)
- MIPS_SYS(sys_clone , 6) /* 4120 */
- MIPS_SYS(sys_setdomainname, 2)
- MIPS_SYS(sys_newuname , 1)
- MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
- MIPS_SYS(sys_adjtimex , 1)
- MIPS_SYS(sys_mprotect , 3) /* 4125 */
- MIPS_SYS(sys_sigprocmask , 3)
- MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
- MIPS_SYS(sys_init_module , 5)
- MIPS_SYS(sys_delete_module, 1)
- MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
- MIPS_SYS(sys_quotactl , 0)
- MIPS_SYS(sys_getpgid , 1)
- MIPS_SYS(sys_fchdir , 1)
- MIPS_SYS(sys_bdflush , 2)
- MIPS_SYS(sys_sysfs , 3) /* 4135 */
- MIPS_SYS(sys_personality , 1)
- MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
- MIPS_SYS(sys_setfsuid , 1)
- MIPS_SYS(sys_setfsgid , 1)
- MIPS_SYS(sys_llseek , 5) /* 4140 */
- MIPS_SYS(sys_getdents , 3)
- MIPS_SYS(sys_select , 5)
- MIPS_SYS(sys_flock , 2)
- MIPS_SYS(sys_msync , 3)
- MIPS_SYS(sys_readv , 3) /* 4145 */
- MIPS_SYS(sys_writev , 3)
- MIPS_SYS(sys_cacheflush , 3)
- MIPS_SYS(sys_cachectl , 3)
- MIPS_SYS(sys_sysmips , 4)
- MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
- MIPS_SYS(sys_getsid , 1)
- MIPS_SYS(sys_fdatasync , 0)
- MIPS_SYS(sys_sysctl , 1)
- MIPS_SYS(sys_mlock , 2)
- MIPS_SYS(sys_munlock , 2) /* 4155 */
- MIPS_SYS(sys_mlockall , 1)
- MIPS_SYS(sys_munlockall , 0)
- MIPS_SYS(sys_sched_setparam, 2)
- MIPS_SYS(sys_sched_getparam, 2)
- MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
- MIPS_SYS(sys_sched_getscheduler, 1)
- MIPS_SYS(sys_sched_yield , 0)
- MIPS_SYS(sys_sched_get_priority_max, 1)
- MIPS_SYS(sys_sched_get_priority_min, 1)
- MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
- MIPS_SYS(sys_nanosleep, 2)
- MIPS_SYS(sys_mremap , 5)
- MIPS_SYS(sys_accept , 3)
- MIPS_SYS(sys_bind , 3)
- MIPS_SYS(sys_connect , 3) /* 4170 */
- MIPS_SYS(sys_getpeername , 3)
- MIPS_SYS(sys_getsockname , 3)
- MIPS_SYS(sys_getsockopt , 5)
- MIPS_SYS(sys_listen , 2)
- MIPS_SYS(sys_recv , 4) /* 4175 */
- MIPS_SYS(sys_recvfrom , 6)
- MIPS_SYS(sys_recvmsg , 3)
- MIPS_SYS(sys_send , 4)
- MIPS_SYS(sys_sendmsg , 3)
- MIPS_SYS(sys_sendto , 6) /* 4180 */
- MIPS_SYS(sys_setsockopt , 5)
- MIPS_SYS(sys_shutdown , 2)
- MIPS_SYS(sys_socket , 3)
- MIPS_SYS(sys_socketpair , 4)
- MIPS_SYS(sys_setresuid , 3) /* 4185 */
- MIPS_SYS(sys_getresuid , 3)
- MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
- MIPS_SYS(sys_poll , 3)
- MIPS_SYS(sys_nfsservctl , 3)
- MIPS_SYS(sys_setresgid , 3) /* 4190 */
- MIPS_SYS(sys_getresgid , 3)
- MIPS_SYS(sys_prctl , 5)
- MIPS_SYS(sys_rt_sigreturn, 0)
- MIPS_SYS(sys_rt_sigaction, 4)
- MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
- MIPS_SYS(sys_rt_sigpending, 2)
- MIPS_SYS(sys_rt_sigtimedwait, 4)
- MIPS_SYS(sys_rt_sigqueueinfo, 3)
- MIPS_SYS(sys_rt_sigsuspend, 0)
- MIPS_SYS(sys_pread64 , 6) /* 4200 */
- MIPS_SYS(sys_pwrite64 , 6)
- MIPS_SYS(sys_chown , 3)
- MIPS_SYS(sys_getcwd , 2)
- MIPS_SYS(sys_capget , 2)
- MIPS_SYS(sys_capset , 2) /* 4205 */
- MIPS_SYS(sys_sigaltstack , 2)
- MIPS_SYS(sys_sendfile , 4)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_mmap2 , 6) /* 4210 */
- MIPS_SYS(sys_truncate64 , 4)
- MIPS_SYS(sys_ftruncate64 , 4)
- MIPS_SYS(sys_stat64 , 2)
- MIPS_SYS(sys_lstat64 , 2)
- MIPS_SYS(sys_fstat64 , 2) /* 4215 */
- MIPS_SYS(sys_pivot_root , 2)
- MIPS_SYS(sys_mincore , 3)
- MIPS_SYS(sys_madvise , 3)
- MIPS_SYS(sys_getdents64 , 3)
- MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
- MIPS_SYS(sys_ni_syscall , 0)
- MIPS_SYS(sys_gettid , 0)
- MIPS_SYS(sys_readahead , 5)
- MIPS_SYS(sys_setxattr , 5)
- MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
- MIPS_SYS(sys_fsetxattr , 5)
- MIPS_SYS(sys_getxattr , 4)
- MIPS_SYS(sys_lgetxattr , 4)
- MIPS_SYS(sys_fgetxattr , 4)
- MIPS_SYS(sys_listxattr , 3) /* 4230 */
- MIPS_SYS(sys_llistxattr , 3)
- MIPS_SYS(sys_flistxattr , 3)
- MIPS_SYS(sys_removexattr , 2)
- MIPS_SYS(sys_lremovexattr, 2)
- MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
- MIPS_SYS(sys_tkill , 2)
- MIPS_SYS(sys_sendfile64 , 5)
- MIPS_SYS(sys_futex , 6)
- MIPS_SYS(sys_sched_setaffinity, 3)
- MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
- MIPS_SYS(sys_io_setup , 2)
- MIPS_SYS(sys_io_destroy , 1)
- MIPS_SYS(sys_io_getevents, 5)
- MIPS_SYS(sys_io_submit , 3)
- MIPS_SYS(sys_io_cancel , 3) /* 4245 */
- MIPS_SYS(sys_exit_group , 1)
- MIPS_SYS(sys_lookup_dcookie, 3)
- MIPS_SYS(sys_epoll_create, 1)
- MIPS_SYS(sys_epoll_ctl , 4)
- MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
- MIPS_SYS(sys_remap_file_pages, 5)
- MIPS_SYS(sys_set_tid_address, 1)
- MIPS_SYS(sys_restart_syscall, 0)
- MIPS_SYS(sys_fadvise64_64, 7)
- MIPS_SYS(sys_statfs64 , 3) /* 4255 */
- MIPS_SYS(sys_fstatfs64 , 2)
- MIPS_SYS(sys_timer_create, 3)
- MIPS_SYS(sys_timer_settime, 4)
- MIPS_SYS(sys_timer_gettime, 2)
- MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
- MIPS_SYS(sys_timer_delete, 1)
- MIPS_SYS(sys_clock_settime, 2)
- MIPS_SYS(sys_clock_gettime, 2)
- MIPS_SYS(sys_clock_getres, 2)
- MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
- MIPS_SYS(sys_tgkill , 3)
- MIPS_SYS(sys_utimes , 2)
- MIPS_SYS(sys_mbind , 4)
- MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
- MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
- MIPS_SYS(sys_mq_open , 4)
- MIPS_SYS(sys_mq_unlink , 1)
- MIPS_SYS(sys_mq_timedsend, 5)
- MIPS_SYS(sys_mq_timedreceive, 5)
- MIPS_SYS(sys_mq_notify , 2) /* 4275 */
- MIPS_SYS(sys_mq_getsetattr, 3)
- MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
- MIPS_SYS(sys_waitid , 4)
- MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
- MIPS_SYS(sys_add_key , 5)
- MIPS_SYS(sys_request_key, 4)
- MIPS_SYS(sys_keyctl , 5)
- MIPS_SYS(sys_set_thread_area, 1)
- MIPS_SYS(sys_inotify_init, 0)
- MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
- MIPS_SYS(sys_inotify_rm_watch, 2)
- MIPS_SYS(sys_migrate_pages, 4)
- MIPS_SYS(sys_openat, 4)
- MIPS_SYS(sys_mkdirat, 3)
- MIPS_SYS(sys_mknodat, 4) /* 4290 */
- MIPS_SYS(sys_fchownat, 5)
- MIPS_SYS(sys_futimesat, 3)
- MIPS_SYS(sys_fstatat64, 4)
- MIPS_SYS(sys_unlinkat, 3)
- MIPS_SYS(sys_renameat, 4) /* 4295 */
- MIPS_SYS(sys_linkat, 5)
- MIPS_SYS(sys_symlinkat, 3)
- MIPS_SYS(sys_readlinkat, 4)
- MIPS_SYS(sys_fchmodat, 3)
- MIPS_SYS(sys_faccessat, 3) /* 4300 */
- MIPS_SYS(sys_pselect6, 6)
- MIPS_SYS(sys_ppoll, 5)
- MIPS_SYS(sys_unshare, 1)
- MIPS_SYS(sys_splice, 6)
- MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
- MIPS_SYS(sys_tee, 4)
- MIPS_SYS(sys_vmsplice, 4)
- MIPS_SYS(sys_move_pages, 6)
- MIPS_SYS(sys_set_robust_list, 2)
- MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
- MIPS_SYS(sys_kexec_load, 4)
- MIPS_SYS(sys_getcpu, 3)
- MIPS_SYS(sys_epoll_pwait, 6)
- MIPS_SYS(sys_ioprio_set, 3)
- MIPS_SYS(sys_ioprio_get, 2)
- MIPS_SYS(sys_utimensat, 4)
- MIPS_SYS(sys_signalfd, 3)
- MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
- MIPS_SYS(sys_eventfd, 1)
- MIPS_SYS(sys_fallocate, 6) /* 4320 */
- MIPS_SYS(sys_timerfd_create, 2)
- MIPS_SYS(sys_timerfd_gettime, 2)
- MIPS_SYS(sys_timerfd_settime, 4)
- MIPS_SYS(sys_signalfd4, 4)
- MIPS_SYS(sys_eventfd2, 2) /* 4325 */
- MIPS_SYS(sys_epoll_create1, 1)
- MIPS_SYS(sys_dup3, 3)
- MIPS_SYS(sys_pipe2, 2)
- MIPS_SYS(sys_inotify_init1, 1)
- MIPS_SYS(sys_preadv, 5) /* 4330 */
- MIPS_SYS(sys_pwritev, 5)
- MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
- MIPS_SYS(sys_perf_event_open, 5)
- MIPS_SYS(sys_accept4, 4)
- MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
- MIPS_SYS(sys_fanotify_init, 2)
- MIPS_SYS(sys_fanotify_mark, 6)
- MIPS_SYS(sys_prlimit64, 4)
- MIPS_SYS(sys_name_to_handle_at, 5)
- MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */
- MIPS_SYS(sys_clock_adjtime, 2)
- MIPS_SYS(sys_syncfs, 1)
- MIPS_SYS(sys_sendmmsg, 4)
- MIPS_SYS(sys_setns, 2)
- MIPS_SYS(sys_process_vm_readv, 6) /* 345 */
- MIPS_SYS(sys_process_vm_writev, 6)
- MIPS_SYS(sys_kcmp, 5)
- MIPS_SYS(sys_finit_module, 3)
- MIPS_SYS(sys_sched_setattr, 2)
- MIPS_SYS(sys_sched_getattr, 3) /* 350 */
- MIPS_SYS(sys_renameat2, 5)
- MIPS_SYS(sys_seccomp, 3)
- MIPS_SYS(sys_getrandom, 3)
- MIPS_SYS(sys_memfd_create, 2)
- MIPS_SYS(sys_bpf, 3) /* 355 */
- MIPS_SYS(sys_execveat, 5)
- MIPS_SYS(sys_userfaultfd, 1)
- MIPS_SYS(sys_membarrier, 2)
- MIPS_SYS(sys_mlock2, 3)
- MIPS_SYS(sys_copy_file_range, 6) /* 360 */
- MIPS_SYS(sys_preadv2, 6)
- MIPS_SYS(sys_pwritev2, 6)
-};
-# undef MIPS_SYS
-# endif /* O32 */
-
-static int do_store_exclusive(CPUMIPSState *env)
-{
- target_ulong addr;
- target_ulong page_addr;
- target_ulong val;
- int flags;
- int segv = 0;
- int reg;
- int d;
-
- addr = env->lladdr;
- page_addr = addr & TARGET_PAGE_MASK;
- start_exclusive();
- mmap_lock();
- flags = page_get_flags(page_addr);
- if ((flags & PAGE_READ) == 0) {
- segv = 1;
- } else {
- reg = env->llreg & 0x1f;
- d = (env->llreg & 0x20) != 0;
- if (d) {
- segv = get_user_s64(val, addr);
- } else {
- segv = get_user_s32(val, addr);
- }
- if (!segv) {
- if (val != env->llval) {
- env->active_tc.gpr[reg] = 0;
- } else {
- if (d) {
- segv = put_user_u64(env->llnewval, addr);
- } else {
- segv = put_user_u32(env->llnewval, addr);
- }
- if (!segv) {
- env->active_tc.gpr[reg] = 1;
- }
- }
- }
- }
- env->lladdr = -1;
- if (!segv) {
- env->active_tc.PC += 4;
- }
- mmap_unlock();
- end_exclusive();
- return segv;
-}
-
-/* Break codes */
-enum {
- BRK_OVERFLOW = 6,
- BRK_DIVZERO = 7
-};
-
-static int do_break(CPUMIPSState *env, target_siginfo_t *info,
- unsigned int code)
-{
- int ret = -1;
-
- switch (code) {
- case BRK_OVERFLOW:
- case BRK_DIVZERO:
- info->si_signo = TARGET_SIGFPE;
- info->si_errno = 0;
- info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV;
- queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info);
- ret = 0;
- break;
- default:
- info->si_signo = TARGET_SIGTRAP;
- info->si_errno = 0;
- queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info);
- ret = 0;
- break;
- }
-
- return ret;
-}
-
-void cpu_loop(CPUMIPSState *env)
-{
- CPUState *cs = CPU(mips_env_get_cpu(env));
- target_siginfo_t info;
- int trapnr;
- abi_long ret;
-# ifdef TARGET_ABI_MIPSO32
- unsigned int syscall_num;
-# endif
-
- for(;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch(trapnr) {
- case EXCP_SYSCALL:
- env->active_tc.PC += 4;
-# ifdef TARGET_ABI_MIPSO32
- syscall_num = env->active_tc.gpr[2] - 4000;
- if (syscall_num >= sizeof(mips_syscall_args)) {
- ret = -TARGET_ENOSYS;
- } else {
- int nb_args;
- abi_ulong sp_reg;
- abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
-
- nb_args = mips_syscall_args[syscall_num];
- sp_reg = env->active_tc.gpr[29];
- switch (nb_args) {
- /* these arguments are taken from the stack */
- case 8:
- if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) {
- goto done_syscall;
- }
- case 7:
- if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) {
- goto done_syscall;
- }
- case 6:
- if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) {
- goto done_syscall;
- }
- case 5:
- if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) {
- goto done_syscall;
- }
- default:
- break;
- }
- ret = do_syscall(env, env->active_tc.gpr[2],
- env->active_tc.gpr[4],
- env->active_tc.gpr[5],
- env->active_tc.gpr[6],
- env->active_tc.gpr[7],
- arg5, arg6, arg7, arg8);
- }
-done_syscall:
-# else
- ret = do_syscall(env, env->active_tc.gpr[2],
- env->active_tc.gpr[4], env->active_tc.gpr[5],
- env->active_tc.gpr[6], env->active_tc.gpr[7],
- env->active_tc.gpr[8], env->active_tc.gpr[9],
- env->active_tc.gpr[10], env->active_tc.gpr[11]);
-# endif /* O32 */
- if (ret == -TARGET_ERESTARTSYS) {
- env->active_tc.PC -= 4;
- break;
- }
- if (ret == -TARGET_QEMU_ESIGRETURN) {
- /* Returning from a successful sigreturn syscall.
- Avoid clobbering register state. */
- break;
- }
- if ((abi_ulong)ret >= (abi_ulong)-1133) {
- env->active_tc.gpr[7] = 1; /* error flag */
- ret = -ret;
- } else {
- env->active_tc.gpr[7] = 0; /* error flag */
- }
- env->active_tc.gpr[2] = ret;
- break;
- case EXCP_TLBL:
- case EXCP_TLBS:
- case EXCP_AdEL:
- case EXCP_AdES:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->CP0_BadVAddr;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_CpU:
- case EXCP_RI:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_SC:
- if (do_store_exclusive(env)) {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->active_tc.PC;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_DSPDIS:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPC;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- /* The code below was inspired by the MIPS Linux kernel trap
- * handling code in arch/mips/kernel/traps.c.
- */
- case EXCP_BREAK:
- {
- abi_ulong trap_instr;
- unsigned int code;
-
- if (env->hflags & MIPS_HFLAG_M16) {
- if (env->insn_flags & ASE_MICROMIPS) {
- /* microMIPS mode */
- ret = get_user_u16(trap_instr, env->active_tc.PC);
- if (ret != 0) {
- goto error;
- }
-
- if ((trap_instr >> 10) == 0x11) {
- /* 16-bit instruction */
- code = trap_instr & 0xf;
- } else {
- /* 32-bit instruction */
- abi_ulong instr_lo;
-
- ret = get_user_u16(instr_lo,
- env->active_tc.PC + 2);
- if (ret != 0) {
- goto error;
- }
- trap_instr = (trap_instr << 16) | instr_lo;
- code = ((trap_instr >> 6) & ((1 << 20) - 1));
- /* Unfortunately, microMIPS also suffers from
- the old assembler bug... */
- if (code >= (1 << 10)) {
- code >>= 10;
- }
- }
- } else {
- /* MIPS16e mode */
- ret = get_user_u16(trap_instr, env->active_tc.PC);
- if (ret != 0) {
- goto error;
- }
- code = (trap_instr >> 6) & 0x3f;
- }
- } else {
- ret = get_user_u32(trap_instr, env->active_tc.PC);
- if (ret != 0) {
- goto error;
- }
-
- /* As described in the original Linux kernel code, the
- * below checks on 'code' are to work around an old
- * assembly bug.
- */
- code = ((trap_instr >> 6) & ((1 << 20) - 1));
- if (code >= (1 << 10)) {
- code >>= 10;
- }
- }
-
- if (do_break(env, &info, code) != 0) {
- goto error;
- }
- }
- break;
- case EXCP_TRAP:
- {
- abi_ulong trap_instr;
- unsigned int code = 0;
-
- if (env->hflags & MIPS_HFLAG_M16) {
- /* microMIPS mode */
- abi_ulong instr[2];
-
- ret = get_user_u16(instr[0], env->active_tc.PC) ||
- get_user_u16(instr[1], env->active_tc.PC + 2);
-
- trap_instr = (instr[0] << 16) | instr[1];
- } else {
- ret = get_user_u32(trap_instr, env->active_tc.PC);
- }
-
- if (ret != 0) {
- goto error;
- }
-
- /* The immediate versions don't provide a code. */
- if (!(trap_instr & 0xFC000000)) {
- if (env->hflags & MIPS_HFLAG_M16) {
- /* microMIPS mode */
- code = ((trap_instr >> 12) & ((1 << 4) - 1));
- } else {
- code = ((trap_instr >> 6) & ((1 << 10) - 1));
- }
- }
-
- if (do_break(env, &info, code) != 0) {
- goto error;
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
-error:
- EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
- abort();
- }
- process_pending_signals(env);
- }
-}
-#endif
-
-#ifdef TARGET_NIOS2
-
-void cpu_loop(CPUNios2State *env)
-{
- CPUState *cs = ENV_GET_CPU(env);
- Nios2CPU *cpu = NIOS2_CPU(cs);
- target_siginfo_t info;
- int trapnr, gdbsig, ret;
-
- for (;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- gdbsig = 0;
-
- switch (trapnr) {
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_TRAP:
- if (env->regs[R_AT] == 0) {
- abi_long ret;
- qemu_log_mask(CPU_LOG_INT, "\nSyscall\n");
-
- ret = do_syscall(env, env->regs[2],
- env->regs[4], env->regs[5], env->regs[6],
- env->regs[7], env->regs[8], env->regs[9],
- 0, 0);
-
- if (env->regs[2] == 0) { /* FIXME: syscall 0 workaround */
- ret = 0;
- }
-
- env->regs[2] = abs(ret);
- /* Return value is 0..4096 */
- env->regs[7] = (ret > 0xfffffffffffff000ULL);
- env->regs[CR_ESTATUS] = env->regs[CR_STATUS];
- env->regs[CR_STATUS] &= ~0x3;
- env->regs[R_EA] = env->regs[R_PC] + 4;
- env->regs[R_PC] += 4;
- break;
- } else {
- qemu_log_mask(CPU_LOG_INT, "\nTrap\n");
-
- env->regs[CR_ESTATUS] = env->regs[CR_STATUS];
- env->regs[CR_STATUS] &= ~0x3;
- env->regs[R_EA] = env->regs[R_PC] + 4;
- env->regs[R_PC] = cpu->exception_addr;
-
- gdbsig = TARGET_SIGTRAP;
- break;
- }
- case 0xaa:
- switch (env->regs[R_PC]) {
- /*case 0x1000:*/ /* TODO:__kuser_helper_version */
- case 0x1004: /* __kuser_cmpxchg */
- start_exclusive();
- if (env->regs[4] & 0x3) {
- goto kuser_fail;
- }
- ret = get_user_u32(env->regs[2], env->regs[4]);
- if (ret) {
- end_exclusive();
- goto kuser_fail;
- }
- env->regs[2] -= env->regs[5];
- if (env->regs[2] == 0) {
- put_user_u32(env->regs[6], env->regs[4]);
- }
- end_exclusive();
- env->regs[R_PC] = env->regs[R_RA];
- break;
- /*case 0x1040:*/ /* TODO:__kuser_sigtramp */
- default:
- ;
-kuser_fail:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* TODO: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->regs[R_PC];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- default:
- EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n",
- trapnr);
- gdbsig = TARGET_SIGILL;
- break;
- }
- if (gdbsig) {
- gdb_handlesig(cs, gdbsig);
- if (gdbsig != TARGET_SIGTRAP) {
- exit(EXIT_FAILURE);
- }
- }
-
- process_pending_signals(env);
- }
-}
-
-#endif /* TARGET_NIOS2 */
-
-#ifdef TARGET_OPENRISC
-
-void cpu_loop(CPUOpenRISCState *env)
-{
- CPUState *cs = CPU(openrisc_env_get_cpu(env));
- int trapnr;
- abi_long ret;
- target_siginfo_t info;
-
- for (;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case EXCP_SYSCALL:
- env->pc += 4; /* 0xc00; */
- ret = do_syscall(env,
- cpu_get_gpr(env, 11), /* return value */
- cpu_get_gpr(env, 3), /* r3 - r7 are params */
- cpu_get_gpr(env, 4),
- cpu_get_gpr(env, 5),
- cpu_get_gpr(env, 6),
- cpu_get_gpr(env, 7),
- cpu_get_gpr(env, 8), 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 4;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- cpu_set_gpr(env, 11, ret);
- }
- break;
- case EXCP_DPF:
- case EXCP_IPF:
- case EXCP_RANGE:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_ALIGN:
- info.si_signo = TARGET_SIGBUS;
- info.si_errno = 0;
- info.si_code = TARGET_BUS_ADRALN;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_ILLEGAL:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPC;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_FPE:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = 0;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_INTERRUPT:
- /* We processed the pending cpu work above. */
- break;
- case EXCP_DEBUG:
- trapnr = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (trapnr) {
- info.si_signo = trapnr;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- g_assert_not_reached();
- }
- process_pending_signals(env);
- }
-}
-
-#endif /* TARGET_OPENRISC */
-
-#ifdef TARGET_SH4
-void cpu_loop(CPUSH4State *env)
-{
- CPUState *cs = CPU(sh_env_get_cpu(env));
- int trapnr, ret;
- target_siginfo_t info;
-
- while (1) {
- bool arch_interrupt = true;
-
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case 0x160:
- env->pc += 2;
- ret = do_syscall(env,
- env->gregs[3],
- env->gregs[4],
- env->gregs[5],
- env->gregs[6],
- env->gregs[7],
- env->gregs[0],
- env->gregs[1],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 2;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->gregs[0] = ret;
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig) {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- } else {
- arch_interrupt = false;
- }
- }
- break;
- case 0xa0:
- case 0xc0:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->tea;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- arch_interrupt = false;
- break;
- default:
- printf ("Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
-
- /* Most of the traps imply an exception or interrupt, which
- implies an REI instruction has been executed. Which means
- that LDST (aka LOK_ADDR) should be cleared. But there are
- a few exceptions for traps internal to QEMU. */
- if (arch_interrupt) {
- env->lock_addr = -1;
- }
- }
-}
-#endif
-
-#ifdef TARGET_CRIS
-void cpu_loop(CPUCRISState *env)
-{
- CPUState *cs = CPU(cris_env_get_cpu(env));
- int trapnr, ret;
- target_siginfo_t info;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case 0xaa:
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->pregs[PR_EDA];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_BREAK:
- ret = do_syscall(env,
- env->regs[9],
- env->regs[10],
- env->regs[11],
- env->regs[12],
- env->regs[13],
- env->pregs[7],
- env->pregs[11],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 2;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[10] = ret;
- }
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- printf ("Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
- }
-}
-#endif
-
-#ifdef TARGET_MICROBLAZE
-void cpu_loop(CPUMBState *env)
-{
- CPUState *cs = CPU(mb_env_get_cpu(env));
- int trapnr, ret;
- target_siginfo_t info;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case 0xaa:
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_BREAK:
- /* Return address is 4 bytes after the call. */
- env->regs[14] += 4;
- env->sregs[SR_PC] = env->regs[14];
- ret = do_syscall(env,
- env->regs[12],
- env->regs[5],
- env->regs[6],
- env->regs[7],
- env->regs[8],
- env->regs[9],
- env->regs[10],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- /* Wind back to before the syscall. */
- env->sregs[SR_PC] -= 4;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[3] = ret;
- }
- /* All syscall exits result in guest r14 being equal to the
- * PC we return to, because the kernel syscall exit "rtbd" does
- * this. (This is true even for sigreturn(); note that r14 is
- * not a userspace-usable register, as the kernel may clobber it
- * at any point.)
- */
- env->regs[14] = env->sregs[SR_PC];
- break;
- case EXCP_HW_EXCP:
- env->regs[17] = env->sregs[SR_PC] + 4;
- if (env->iflags & D_FLAG) {
- env->sregs[SR_ESR] |= 1 << 12;
- env->sregs[SR_PC] -= 4;
- /* FIXME: if branch was immed, replay the imm as well. */
- }
-
- env->iflags &= ~(IMM_FLAG | D_FLAG);
-
- switch (env->sregs[SR_ESR] & 31) {
- case ESR_EC_DIVZERO:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_FLTDIV;
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case ESR_EC_FPU:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- if (env->sregs[SR_FSR] & FSR_IO) {
- info.si_code = TARGET_FPE_FLTINV;
- }
- if (env->sregs[SR_FSR] & FSR_DZ) {
- info.si_code = TARGET_FPE_FLTDIV;
- }
- info._sifields._sigfault._addr = 0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- default:
- printf ("Unhandled hw-exception: 0x%x\n",
- env->sregs[SR_ESR] & ESR_EC_MASK);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- break;
- }
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- printf ("Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
- }
-}
-#endif
-
-#ifdef TARGET_M68K
-
-void cpu_loop(CPUM68KState *env)
-{
- CPUState *cs = CPU(m68k_env_get_cpu(env));
- int trapnr;
- unsigned int n;
- target_siginfo_t info;
- TaskState *ts = cs->opaque;
-
- for(;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch(trapnr) {
- case EXCP_ILLEGAL:
- {
- if (ts->sim_syscalls) {
- uint16_t nr;
- get_user_u16(nr, env->pc + 2);
- env->pc += 4;
- do_m68k_simcall(env, nr);
- } else {
- goto do_sigill;
- }
- }
- break;
- case EXCP_HALT_INSN:
- /* Semihosing syscall. */
- env->pc += 4;
- do_m68k_semihosting(env, env->dregs[0]);
- break;
- case EXCP_LINEA:
- case EXCP_LINEF:
- case EXCP_UNSUPPORTED:
- do_sigill:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPN;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_CHK:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_INTOVF;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_DIV0:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_INTDIV;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_TRAP0:
- {
- abi_long ret;
- ts->sim_syscalls = 0;
- n = env->dregs[0];
- env->pc += 2;
- ret = do_syscall(env,
- n,
- env->dregs[1],
- env->dregs[2],
- env->dregs[3],
- env->dregs[4],
- env->dregs[5],
- env->aregs[0],
- 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 2;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->dregs[0] = ret;
- }
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_ACCESS:
- {
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- /* XXX: check env->error_code */
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = env->mmu.ar;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_DEBUG:
- {
- int sig;
-
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig)
- {
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- }
- }
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
- abort();
- }
- process_pending_signals(env);
- }
-}
-#endif /* TARGET_M68K */
-
-#ifdef TARGET_ALPHA
-void cpu_loop(CPUAlphaState *env)
-{
- CPUState *cs = CPU(alpha_env_get_cpu(env));
- int trapnr;
- target_siginfo_t info;
- abi_long sysret;
-
- while (1) {
- bool arch_interrupt = true;
-
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case EXCP_RESET:
- fprintf(stderr, "Reset requested. Exit\n");
- exit(EXIT_FAILURE);
- break;
- case EXCP_MCHK:
- fprintf(stderr, "Machine check exception. Exit\n");
- exit(EXIT_FAILURE);
- break;
- case EXCP_SMP_INTERRUPT:
- case EXCP_CLK_INTERRUPT:
- case EXCP_DEV_INTERRUPT:
- fprintf(stderr, "External interrupt. Exit\n");
- exit(EXIT_FAILURE);
- break;
- case EXCP_MMFAULT:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID
- ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
- info._sifields._sigfault._addr = env->trap_arg0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_UNALIGN:
- info.si_signo = TARGET_SIGBUS;
- info.si_errno = 0;
- info.si_code = TARGET_BUS_ADRALN;
- info._sifields._sigfault._addr = env->trap_arg0;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_OPCDEC:
- do_sigill:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPC;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_ARITH:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_FLTINV;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_FEN:
- /* No-op. Linux simply re-enables the FPU. */
- break;
- case EXCP_CALL_PAL:
- switch (env->error_code) {
- case 0x80:
- /* BPT */
- info.si_signo = TARGET_SIGTRAP;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case 0x81:
- /* BUGCHK */
- info.si_signo = TARGET_SIGTRAP;
- info.si_errno = 0;
- info.si_code = 0;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case 0x83:
- /* CALLSYS */
- trapnr = env->ir[IR_V0];
- sysret = do_syscall(env, trapnr,
- env->ir[IR_A0], env->ir[IR_A1],
- env->ir[IR_A2], env->ir[IR_A3],
- env->ir[IR_A4], env->ir[IR_A5],
- 0, 0);
- if (sysret == -TARGET_ERESTARTSYS) {
- env->pc -= 4;
- break;
- }
- if (sysret == -TARGET_QEMU_ESIGRETURN) {
- break;
- }
- /* Syscall writes 0 to V0 to bypass error check, similar
- to how this is handled internal to Linux kernel.
- (Ab)use trapnr temporarily as boolean indicating error. */
- trapnr = (env->ir[IR_V0] != 0 && sysret < 0);
- env->ir[IR_V0] = (trapnr ? -sysret : sysret);
- env->ir[IR_A3] = trapnr;
- break;
- case 0x86:
- /* IMB */
- /* ??? We can probably elide the code using page_unprotect
- that is checking for self-modifying code. Instead we
- could simply call tb_flush here. Until we work out the
- changes required to turn off the extra write protection,
- this can be a no-op. */
- break;
- case 0x9E:
- /* RDUNIQUE */
- /* Handled in the translator for usermode. */
- abort();
- case 0x9F:
- /* WRUNIQUE */
- /* Handled in the translator for usermode. */
- abort();
- case 0xAA:
- /* GENTRAP */
- info.si_signo = TARGET_SIGFPE;
- switch (env->ir[IR_A0]) {
- case TARGET_GEN_INTOVF:
- info.si_code = TARGET_FPE_INTOVF;
- break;
- case TARGET_GEN_INTDIV:
- info.si_code = TARGET_FPE_INTDIV;
- break;
- case TARGET_GEN_FLTOVF:
- info.si_code = TARGET_FPE_FLTOVF;
- break;
- case TARGET_GEN_FLTUND:
- info.si_code = TARGET_FPE_FLTUND;
- break;
- case TARGET_GEN_FLTINV:
- info.si_code = TARGET_FPE_FLTINV;
- break;
- case TARGET_GEN_FLTINE:
- info.si_code = TARGET_FPE_FLTRES;
- break;
- case TARGET_GEN_ROPRAND:
- info.si_code = 0;
- break;
- default:
- info.si_signo = TARGET_SIGTRAP;
- info.si_code = 0;
- break;
- }
- info.si_errno = 0;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- default:
- goto do_sigill;
- }
- break;
- case EXCP_DEBUG:
- info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (info.si_signo) {
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- } else {
- arch_interrupt = false;
- }
- break;
- case EXCP_INTERRUPT:
- /* Just indicate that signals should be handled asap. */
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- arch_interrupt = false;
- break;
- default:
- printf ("Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
-
- /* Most of the traps imply a transition through PALcode, which
- implies an REI instruction has been executed. Which means
- that RX and LOCK_ADDR should be cleared. But there are a
- few exceptions for traps internal to QEMU. */
- if (arch_interrupt) {
- env->flags &= ~ENV_FLAG_RX_FLAG;
- env->lock_addr = -1;
- }
- }
-}
-#endif /* TARGET_ALPHA */
-
-#ifdef TARGET_S390X
-
-/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */
-#define S390X_FAIL_ADDR_MASK -4096LL
-
-void cpu_loop(CPUS390XState *env)
-{
- CPUState *cs = CPU(s390_env_get_cpu(env));
- int trapnr, n, sig;
- target_siginfo_t info;
- target_ulong addr;
- abi_long ret;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case EXCP_INTERRUPT:
- /* Just indicate that signals should be handled asap. */
- break;
-
- case EXCP_SVC:
- n = env->int_svc_code;
- if (!n) {
- /* syscalls > 255 */
- n = env->regs[1];
- }
- env->psw.addr += env->int_svc_ilen;
- ret = do_syscall(env, n, env->regs[2], env->regs[3],
- env->regs[4], env->regs[5],
- env->regs[6], env->regs[7], 0, 0);
- if (ret == -TARGET_ERESTARTSYS) {
- env->psw.addr -= env->int_svc_ilen;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[2] = ret;
- }
- break;
-
- case EXCP_DEBUG:
- sig = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (sig) {
- n = TARGET_TRAP_BRKPT;
- goto do_signal_pc;
- }
- break;
- case EXCP_PGM:
- n = env->int_pgm_code;
- switch (n) {
- case PGM_OPERATION:
- case PGM_PRIVILEGED:
- sig = TARGET_SIGILL;
- n = TARGET_ILL_ILLOPC;
- goto do_signal_pc;
- case PGM_PROTECTION:
- case PGM_ADDRESSING:
- sig = TARGET_SIGSEGV;
- /* XXX: check env->error_code */
- n = TARGET_SEGV_MAPERR;
- addr = env->__excp_addr & S390X_FAIL_ADDR_MASK;
- goto do_signal;
- case PGM_EXECUTE:
- case PGM_SPECIFICATION:
- case PGM_SPECIAL_OP:
- case PGM_OPERAND:
- do_sigill_opn:
- sig = TARGET_SIGILL;
- n = TARGET_ILL_ILLOPN;
- goto do_signal_pc;
-
- case PGM_FIXPT_OVERFLOW:
- sig = TARGET_SIGFPE;
- n = TARGET_FPE_INTOVF;
- goto do_signal_pc;
- case PGM_FIXPT_DIVIDE:
- sig = TARGET_SIGFPE;
- n = TARGET_FPE_INTDIV;
- goto do_signal_pc;
-
- case PGM_DATA:
- n = (env->fpc >> 8) & 0xff;
- if (n == 0xff) {
- /* compare-and-trap */
- goto do_sigill_opn;
- } else {
- /* An IEEE exception, simulated or otherwise. */
- if (n & 0x80) {
- n = TARGET_FPE_FLTINV;
- } else if (n & 0x40) {
- n = TARGET_FPE_FLTDIV;
- } else if (n & 0x20) {
- n = TARGET_FPE_FLTOVF;
- } else if (n & 0x10) {
- n = TARGET_FPE_FLTUND;
- } else if (n & 0x08) {
- n = TARGET_FPE_FLTRES;
- } else {
- /* ??? Quantum exception; BFP, DFP error. */
- goto do_sigill_opn;
- }
- sig = TARGET_SIGFPE;
- goto do_signal_pc;
- }
-
- default:
- fprintf(stderr, "Unhandled program exception: %#x\n", n);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- break;
-
- do_signal_pc:
- addr = env->psw.addr;
- do_signal:
- info.si_signo = sig;
- info.si_errno = 0;
- info.si_code = n;
- info._sifields._sigfault._addr = addr;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
-
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
- cpu_dump_state(cs, stderr, fprintf, 0);
- exit(EXIT_FAILURE);
- }
- process_pending_signals (env);
- }
-}
-
-#endif /* TARGET_S390X */
-
-#ifdef TARGET_TILEGX
-
-static void gen_sigill_reg(CPUTLGState *env)
-{
- target_siginfo_t info;
-
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_PRVREG;
- info._sifields._sigfault._addr = env->pc;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-}
-
-static void do_signal(CPUTLGState *env, int signo, int sigcode)
-{
- target_siginfo_t info;
-
- info.si_signo = signo;
- info.si_errno = 0;
- info._sifields._sigfault._addr = env->pc;
-
- if (signo == TARGET_SIGSEGV) {
- /* The passed in sigcode is a dummy; check for a page mapping
- and pass either MAPERR or ACCERR. */
- target_ulong addr = env->excaddr;
- info._sifields._sigfault._addr = addr;
- if (page_check_range(addr, 1, PAGE_VALID) < 0) {
- sigcode = TARGET_SEGV_MAPERR;
- } else {
- sigcode = TARGET_SEGV_ACCERR;
- }
- }
- info.si_code = sigcode;
-
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-}
-
-static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr)
-{
- env->excaddr = addr;
- do_signal(env, TARGET_SIGSEGV, 0);
-}
-
-static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val)
-{
- if (unlikely(reg >= TILEGX_R_COUNT)) {
- switch (reg) {
- case TILEGX_R_SN:
- case TILEGX_R_ZERO:
- return;
- case TILEGX_R_IDN0:
- case TILEGX_R_IDN1:
- case TILEGX_R_UDN0:
- case TILEGX_R_UDN1:
- case TILEGX_R_UDN2:
- case TILEGX_R_UDN3:
- gen_sigill_reg(env);
- return;
- default:
- g_assert_not_reached();
- }
- }
- env->regs[reg] = val;
-}
-
-/*
- * Compare the 8-byte contents of the CmpValue SPR with the 8-byte value in
- * memory at the address held in the first source register. If the values are
- * not equal, then no memory operation is performed. If the values are equal,
- * the 8-byte quantity from the second source register is written into memory
- * at the address held in the first source register. In either case, the result
- * of the instruction is the value read from memory. The compare and write to
- * memory are atomic and thus can be used for synchronization purposes. This
- * instruction only operates for addresses aligned to a 8-byte boundary.
- * Unaligned memory access causes an Unaligned Data Reference interrupt.
- *
- * Functional Description (64-bit)
- * uint64_t memVal = memoryReadDoubleWord (rf[SrcA]);
- * rf[Dest] = memVal;
- * if (memVal == SPR[CmpValueSPR])
- * memoryWriteDoubleWord (rf[SrcA], rf[SrcB]);
- *
- * Functional Description (32-bit)
- * uint64_t memVal = signExtend32 (memoryReadWord (rf[SrcA]));
- * rf[Dest] = memVal;
- * if (memVal == signExtend32 (SPR[CmpValueSPR]))
- * memoryWriteWord (rf[SrcA], rf[SrcB]);
- *
- *
- * This function also processes exch and exch4 which need not process SPR.
- */
-static void do_exch(CPUTLGState *env, bool quad, bool cmp)
-{
- target_ulong addr;
- target_long val, sprval;
-
- start_exclusive();
-
- addr = env->atomic_srca;
- if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
- goto sigsegv_maperr;
- }
-
- if (cmp) {
- if (quad) {
- sprval = env->spregs[TILEGX_SPR_CMPEXCH];
- } else {
- sprval = sextract64(env->spregs[TILEGX_SPR_CMPEXCH], 0, 32);
- }
- }
-
- if (!cmp || val == sprval) {
- target_long valb = env->atomic_srcb;
- if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) {
- goto sigsegv_maperr;
- }
- }
-
- set_regval(env, env->atomic_dstr, val);
- end_exclusive();
- return;
-
- sigsegv_maperr:
- end_exclusive();
- gen_sigsegv_maperr(env, addr);
-}
-
-static void do_fetch(CPUTLGState *env, int trapnr, bool quad)
-{
- int8_t write = 1;
- target_ulong addr;
- target_long val, valb;
-
- start_exclusive();
-
- addr = env->atomic_srca;
- valb = env->atomic_srcb;
- if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
- goto sigsegv_maperr;
- }
-
- switch (trapnr) {
- case TILEGX_EXCP_OPCODE_FETCHADD:
- case TILEGX_EXCP_OPCODE_FETCHADD4:
- valb += val;
- break;
- case TILEGX_EXCP_OPCODE_FETCHADDGEZ:
- valb += val;
- if (valb < 0) {
- write = 0;
- }
- break;
- case TILEGX_EXCP_OPCODE_FETCHADDGEZ4:
- valb += val;
- if ((int32_t)valb < 0) {
- write = 0;
- }
- break;
- case TILEGX_EXCP_OPCODE_FETCHAND:
- case TILEGX_EXCP_OPCODE_FETCHAND4:
- valb &= val;
- break;
- case TILEGX_EXCP_OPCODE_FETCHOR:
- case TILEGX_EXCP_OPCODE_FETCHOR4:
- valb |= val;
- break;
- default:
- g_assert_not_reached();
- }
-
- if (write) {
- if (quad ? put_user_u64(valb, addr) : put_user_u32(valb, addr)) {
- goto sigsegv_maperr;
- }
- }
-
- set_regval(env, env->atomic_dstr, val);
- end_exclusive();
- return;
-
- sigsegv_maperr:
- end_exclusive();
- gen_sigsegv_maperr(env, addr);
-}
-
-void cpu_loop(CPUTLGState *env)
-{
- CPUState *cs = CPU(tilegx_env_get_cpu(env));
- int trapnr;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case TILEGX_EXCP_SYSCALL:
- {
- abi_ulong ret = do_syscall(env, env->regs[TILEGX_R_NR],
- env->regs[0], env->regs[1],
- env->regs[2], env->regs[3],
- env->regs[4], env->regs[5],
- env->regs[6], env->regs[7]);
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 8;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->regs[TILEGX_R_RE] = ret;
- env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(ret) ? -ret : 0;
- }
- break;
- }
- case TILEGX_EXCP_OPCODE_EXCH:
- do_exch(env, true, false);
- break;
- case TILEGX_EXCP_OPCODE_EXCH4:
- do_exch(env, false, false);
- break;
- case TILEGX_EXCP_OPCODE_CMPEXCH:
- do_exch(env, true, true);
- break;
- case TILEGX_EXCP_OPCODE_CMPEXCH4:
- do_exch(env, false, true);
- break;
- case TILEGX_EXCP_OPCODE_FETCHADD:
- case TILEGX_EXCP_OPCODE_FETCHADDGEZ:
- case TILEGX_EXCP_OPCODE_FETCHAND:
- case TILEGX_EXCP_OPCODE_FETCHOR:
- do_fetch(env, trapnr, true);
- break;
- case TILEGX_EXCP_OPCODE_FETCHADD4:
- case TILEGX_EXCP_OPCODE_FETCHADDGEZ4:
- case TILEGX_EXCP_OPCODE_FETCHAND4:
- case TILEGX_EXCP_OPCODE_FETCHOR4:
- do_fetch(env, trapnr, false);
- break;
- case TILEGX_EXCP_SIGNAL:
- do_signal(env, env->signo, env->sigcode);
- break;
- case TILEGX_EXCP_REG_IDN_ACCESS:
- case TILEGX_EXCP_REG_UDN_ACCESS:
- gen_sigill_reg(env);
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- default:
- fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr);
- g_assert_not_reached();
- }
- process_pending_signals(env);
- }
-}
-
-#endif
-
-#ifdef TARGET_RISCV
-
-void cpu_loop(CPURISCVState *env)
-{
- CPUState *cs = CPU(riscv_env_get_cpu(env));
- int trapnr, signum, sigcode;
- target_ulong sigaddr;
- target_ulong ret;
-
- for (;;) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- signum = 0;
- sigcode = 0;
- sigaddr = 0;
-
- switch (trapnr) {
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- case EXCP_ATOMIC:
- cpu_exec_step_atomic(cs);
- break;
- case RISCV_EXCP_U_ECALL:
- env->pc += 4;
- if (env->gpr[xA7] == TARGET_NR_arch_specific_syscall + 15) {
- /* riscv_flush_icache_syscall is a no-op in QEMU as
- self-modifying code is automatically detected */
- ret = 0;
- } else {
- ret = do_syscall(env,
- env->gpr[xA7],
- env->gpr[xA0],
- env->gpr[xA1],
- env->gpr[xA2],
- env->gpr[xA3],
- env->gpr[xA4],
- env->gpr[xA5],
- 0, 0);
- }
- if (ret == -TARGET_ERESTARTSYS) {
- env->pc -= 4;
- } else if (ret != -TARGET_QEMU_ESIGRETURN) {
- env->gpr[xA0] = ret;
- }
- if (cs->singlestep_enabled) {
- goto gdbstep;
- }
- break;
- case RISCV_EXCP_ILLEGAL_INST:
- signum = TARGET_SIGILL;
- sigcode = TARGET_ILL_ILLOPC;
- break;
- case RISCV_EXCP_BREAKPOINT:
- signum = TARGET_SIGTRAP;
- sigcode = TARGET_TRAP_BRKPT;
- sigaddr = env->pc;
- break;
- case RISCV_EXCP_INST_PAGE_FAULT:
- case RISCV_EXCP_LOAD_PAGE_FAULT:
- case RISCV_EXCP_STORE_PAGE_FAULT:
- signum = TARGET_SIGSEGV;
- sigcode = TARGET_SEGV_MAPERR;
- break;
- case EXCP_DEBUG:
- gdbstep:
- signum = gdb_handlesig(cs, TARGET_SIGTRAP);
- sigcode = TARGET_TRAP_BRKPT;
- break;
- default:
- EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n",
- trapnr);
- exit(EXIT_FAILURE);
- }
-
- if (signum) {
- target_siginfo_t info = {
- .si_signo = signum,
- .si_errno = 0,
- .si_code = sigcode,
- ._sifields._sigfault._addr = sigaddr
- };
- queue_signal(env, info.si_signo, QEMU_SI_KILL, &info);
- }
-
- process_pending_signals(env);
- }
-}
-
-#endif /* TARGET_RISCV */
-
-#ifdef TARGET_HPPA
-
-static abi_ulong hppa_lws(CPUHPPAState *env)
-{
- uint32_t which = env->gr[20];
- abi_ulong addr = env->gr[26];
- abi_ulong old = env->gr[25];
- abi_ulong new = env->gr[24];
- abi_ulong size, ret;
-
- switch (which) {
- default:
- return -TARGET_ENOSYS;
-
- case 0: /* elf32 atomic 32bit cmpxchg */
- if ((addr & 3) || !access_ok(VERIFY_WRITE, addr, 4)) {
- return -TARGET_EFAULT;
- }
- old = tswap32(old);
- new = tswap32(new);
- ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
- ret = tswap32(ret);
- break;
-
- case 2: /* elf32 atomic "new" cmpxchg */
- size = env->gr[23];
- if (size >= 4) {
- return -TARGET_ENOSYS;
- }
- if (((addr | old | new) & ((1 << size) - 1))
- || !access_ok(VERIFY_WRITE, addr, 1 << size)
- || !access_ok(VERIFY_READ, old, 1 << size)
- || !access_ok(VERIFY_READ, new, 1 << size)) {
- return -TARGET_EFAULT;
- }
- /* Note that below we use host-endian loads so that the cmpxchg
- can be host-endian as well. */
- switch (size) {
- case 0:
- old = *(uint8_t *)g2h(old);
- new = *(uint8_t *)g2h(new);
- ret = atomic_cmpxchg((uint8_t *)g2h(addr), old, new);
- ret = ret != old;
- break;
- case 1:
- old = *(uint16_t *)g2h(old);
- new = *(uint16_t *)g2h(new);
- ret = atomic_cmpxchg((uint16_t *)g2h(addr), old, new);
- ret = ret != old;
- break;
- case 2:
- old = *(uint32_t *)g2h(old);
- new = *(uint32_t *)g2h(new);
- ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
- ret = ret != old;
- break;
- case 3:
- {
- uint64_t o64, n64, r64;
- o64 = *(uint64_t *)g2h(old);
- n64 = *(uint64_t *)g2h(new);
-#ifdef CONFIG_ATOMIC64
- r64 = atomic_cmpxchg__nocheck((uint64_t *)g2h(addr), o64, n64);
- ret = r64 != o64;
-#else
- start_exclusive();
- r64 = *(uint64_t *)g2h(addr);
- ret = 1;
- if (r64 == o64) {
- *(uint64_t *)g2h(addr) = n64;
- ret = 0;
- }
- end_exclusive();
+/*
+ * When running 32-on-64 we should make sure we can fit all of the possible
+ * guest address space into a contiguous chunk of virtual host memory.
+ *
+ * This way we will never overlap with our own libraries or binaries or stack
+ * or anything else that QEMU maps.
+ *
+ * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
+ * of the address for the kernel. Some cpus rely on this and user space
+ * uses the high bit(s) for pointer tagging and the like. For them, we
+ * must preserve the expected address space.
+ */
+#ifndef MAX_RESERVED_VA
+# if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
+# if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
+ (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
+/* There are a number of places where we assign reserved_va to a variable
+ of type abi_ulong and expect it to fit. Avoid the last page. */
+# define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK)
+# else
+# define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
+# endif
+# else
+# define MAX_RESERVED_VA 0
+# endif
#endif
- }
- break;
- }
- break;
- }
-
- env->gr[28] = ret;
- return 0;
-}
-
-void cpu_loop(CPUHPPAState *env)
-{
- CPUState *cs = CPU(hppa_env_get_cpu(env));
- target_siginfo_t info;
- abi_ulong ret;
- int trapnr;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- switch (trapnr) {
- case EXCP_SYSCALL:
- ret = do_syscall(env, env->gr[20],
- env->gr[26], env->gr[25],
- env->gr[24], env->gr[23],
- env->gr[22], env->gr[21], 0, 0);
- switch (ret) {
- default:
- env->gr[28] = ret;
- /* We arrived here by faking the gateway page. Return. */
- env->iaoq_f = env->gr[31];
- env->iaoq_b = env->gr[31] + 4;
- break;
- case -TARGET_ERESTARTSYS:
- case -TARGET_QEMU_ESIGRETURN:
- break;
- }
- break;
- case EXCP_SYSCALL_LWS:
- env->gr[21] = hppa_lws(env);
- /* We arrived here by faking the gateway page. Return. */
- env->iaoq_f = env->gr[31];
- env->iaoq_b = env->gr[31] + 4;
- break;
- case EXCP_ITLB_MISS:
- case EXCP_DTLB_MISS:
- case EXCP_NA_ITLB_MISS:
- case EXCP_NA_DTLB_MISS:
- case EXCP_IMP:
- case EXCP_DMP:
- case EXCP_DMB:
- case EXCP_PAGE_REF:
- case EXCP_DMAR:
- case EXCP_DMPI:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- info._sifields._sigfault._addr = env->cr[CR_IOR];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_UNALIGN:
- info.si_signo = TARGET_SIGBUS;
- info.si_errno = 0;
- info.si_code = 0;
- info._sifields._sigfault._addr = env->cr[CR_IOR];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_ILL:
- case EXCP_PRIV_OPR:
- case EXCP_PRIV_REG:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLOPN;
- info._sifields._sigfault._addr = env->iaoq_f;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_OVERFLOW:
- case EXCP_COND:
- case EXCP_ASSIST:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = 0;
- info._sifields._sigfault._addr = env->iaoq_f;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
- case EXCP_DEBUG:
- trapnr = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (trapnr) {
- info.si_signo = trapnr;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, trapnr, QEMU_SI_FAULT, &info);
- }
- break;
- case EXCP_INTERRUPT:
- /* just indicate that signals should be handled asap */
- break;
- default:
- g_assert_not_reached();
- }
- process_pending_signals(env);
- }
-}
-
-#endif /* TARGET_HPPA */
-
-#ifdef TARGET_XTENSA
-static void xtensa_rfw(CPUXtensaState *env)
-{
- xtensa_restore_owb(env);
- env->pc = env->sregs[EPC1];
-}
+unsigned long reserved_va;
-static void xtensa_rfwu(CPUXtensaState *env)
-{
- env->sregs[WINDOW_START] |= (1 << env->sregs[WINDOW_BASE]);
- xtensa_rfw(env);
-}
+static void usage(int exitcode);
-static void xtensa_rfwo(CPUXtensaState *env)
-{
- env->sregs[WINDOW_START] &= ~(1 << env->sregs[WINDOW_BASE]);
- xtensa_rfw(env);
-}
+static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
+const char *qemu_uname_release;
-static void xtensa_overflow4(CPUXtensaState *env)
-{
- put_user_ual(env->regs[0], env->regs[5] - 16);
- put_user_ual(env->regs[1], env->regs[5] - 12);
- put_user_ual(env->regs[2], env->regs[5] - 8);
- put_user_ual(env->regs[3], env->regs[5] - 4);
- xtensa_rfwo(env);
-}
+/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
+ we allocate a bigger stack. Need a better solution, for example
+ by remapping the process stack directly at the right place */
+unsigned long guest_stack_size = 8 * 1024 * 1024UL;
-static void xtensa_underflow4(CPUXtensaState *env)
+void gemu_log(const char *fmt, ...)
{
- get_user_ual(env->regs[0], env->regs[5] - 16);
- get_user_ual(env->regs[1], env->regs[5] - 12);
- get_user_ual(env->regs[2], env->regs[5] - 8);
- get_user_ual(env->regs[3], env->regs[5] - 4);
- xtensa_rfwu(env);
-}
+ va_list ap;
-static void xtensa_overflow8(CPUXtensaState *env)
-{
- put_user_ual(env->regs[0], env->regs[9] - 16);
- get_user_ual(env->regs[0], env->regs[1] - 12);
- put_user_ual(env->regs[1], env->regs[9] - 12);
- put_user_ual(env->regs[2], env->regs[9] - 8);
- put_user_ual(env->regs[3], env->regs[9] - 4);
- put_user_ual(env->regs[4], env->regs[0] - 32);
- put_user_ual(env->regs[5], env->regs[0] - 28);
- put_user_ual(env->regs[6], env->regs[0] - 24);
- put_user_ual(env->regs[7], env->regs[0] - 20);
- xtensa_rfwo(env);
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
}
-static void xtensa_underflow8(CPUXtensaState *env)
+#if defined(TARGET_I386)
+int cpu_get_pic_interrupt(CPUX86State *env)
{
- get_user_ual(env->regs[0], env->regs[9] - 16);
- get_user_ual(env->regs[1], env->regs[9] - 12);
- get_user_ual(env->regs[2], env->regs[9] - 8);
- get_user_ual(env->regs[7], env->regs[1] - 12);
- get_user_ual(env->regs[3], env->regs[9] - 4);
- get_user_ual(env->regs[4], env->regs[7] - 32);
- get_user_ual(env->regs[5], env->regs[7] - 28);
- get_user_ual(env->regs[6], env->regs[7] - 24);
- get_user_ual(env->regs[7], env->regs[7] - 20);
- xtensa_rfwu(env);
+ return -1;
}
+#endif
-static void xtensa_overflow12(CPUXtensaState *env)
-{
- put_user_ual(env->regs[0], env->regs[13] - 16);
- get_user_ual(env->regs[0], env->regs[1] - 12);
- put_user_ual(env->regs[1], env->regs[13] - 12);
- put_user_ual(env->regs[2], env->regs[13] - 8);
- put_user_ual(env->regs[3], env->regs[13] - 4);
- put_user_ual(env->regs[4], env->regs[0] - 48);
- put_user_ual(env->regs[5], env->regs[0] - 44);
- put_user_ual(env->regs[6], env->regs[0] - 40);
- put_user_ual(env->regs[7], env->regs[0] - 36);
- put_user_ual(env->regs[8], env->regs[0] - 32);
- put_user_ual(env->regs[9], env->regs[0] - 28);
- put_user_ual(env->regs[10], env->regs[0] - 24);
- put_user_ual(env->regs[11], env->regs[0] - 20);
- xtensa_rfwo(env);
-}
+/***********************************************************/
+/* Helper routines for implementing atomic operations. */
-static void xtensa_underflow12(CPUXtensaState *env)
+/* Make sure everything is in a consistent state for calling fork(). */
+void fork_start(void)
{
- get_user_ual(env->regs[0], env->regs[13] - 16);
- get_user_ual(env->regs[1], env->regs[13] - 12);
- get_user_ual(env->regs[2], env->regs[13] - 8);
- get_user_ual(env->regs[11], env->regs[1] - 12);
- get_user_ual(env->regs[3], env->regs[13] - 4);
- get_user_ual(env->regs[4], env->regs[11] - 48);
- get_user_ual(env->regs[5], env->regs[11] - 44);
- get_user_ual(env->regs[6], env->regs[11] - 40);
- get_user_ual(env->regs[7], env->regs[11] - 36);
- get_user_ual(env->regs[8], env->regs[11] - 32);
- get_user_ual(env->regs[9], env->regs[11] - 28);
- get_user_ual(env->regs[10], env->regs[11] - 24);
- get_user_ual(env->regs[11], env->regs[11] - 20);
- xtensa_rfwu(env);
+ start_exclusive();
+ mmap_fork_start();
+ cpu_list_lock();
}
-void cpu_loop(CPUXtensaState *env)
+void fork_end(int child)
{
- CPUState *cs = CPU(xtensa_env_get_cpu(env));
- target_siginfo_t info;
- abi_ulong ret;
- int trapnr;
-
- while (1) {
- cpu_exec_start(cs);
- trapnr = cpu_exec(cs);
- cpu_exec_end(cs);
- process_queued_cpu_work(cs);
-
- env->sregs[PS] &= ~PS_EXCM;
- switch (trapnr) {
- case EXCP_INTERRUPT:
- break;
-
- case EXC_WINDOW_OVERFLOW4:
- xtensa_overflow4(env);
- break;
- case EXC_WINDOW_UNDERFLOW4:
- xtensa_underflow4(env);
- break;
- case EXC_WINDOW_OVERFLOW8:
- xtensa_overflow8(env);
- break;
- case EXC_WINDOW_UNDERFLOW8:
- xtensa_underflow8(env);
- break;
- case EXC_WINDOW_OVERFLOW12:
- xtensa_overflow12(env);
- break;
- case EXC_WINDOW_UNDERFLOW12:
- xtensa_underflow12(env);
- break;
-
- case EXC_USER:
- switch (env->sregs[EXCCAUSE]) {
- case ILLEGAL_INSTRUCTION_CAUSE:
- case PRIVILEGED_CAUSE:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code =
- env->sregs[EXCCAUSE] == ILLEGAL_INSTRUCTION_CAUSE ?
- TARGET_ILL_ILLOPC : TARGET_ILL_PRVOPC;
- info._sifields._sigfault._addr = env->sregs[EPC1];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
-
- case SYSCALL_CAUSE:
- env->pc += 3;
- ret = do_syscall(env, env->regs[2],
- env->regs[6], env->regs[3],
- env->regs[4], env->regs[5],
- env->regs[8], env->regs[9], 0, 0);
- switch (ret) {
- default:
- env->regs[2] = ret;
- break;
-
- case -TARGET_ERESTARTSYS:
- case -TARGET_QEMU_ESIGRETURN:
- break;
- }
- break;
-
- case ALLOCA_CAUSE:
- env->sregs[PS] = deposit32(env->sregs[PS],
- PS_OWB_SHIFT,
- PS_OWB_LEN,
- env->sregs[WINDOW_BASE]);
-
- switch (env->regs[0] & 0xc0000000) {
- case 0x00000000:
- case 0x40000000:
- xtensa_rotate_window(env, -1);
- xtensa_underflow4(env);
- break;
-
- case 0x80000000:
- xtensa_rotate_window(env, -2);
- xtensa_underflow8(env);
- break;
-
- case 0xc0000000:
- xtensa_rotate_window(env, -3);
- xtensa_underflow12(env);
- break;
- }
- break;
-
- case INTEGER_DIVIDE_BY_ZERO_CAUSE:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_INTDIV;
- info._sifields._sigfault._addr = env->sregs[EPC1];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
-
- case LOAD_PROHIBITED_CAUSE:
- case STORE_PROHIBITED_CAUSE:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- info._sifields._sigfault._addr = env->sregs[EXCVADDR];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
-
- default:
- fprintf(stderr, "exccause = %d\n", env->sregs[EXCCAUSE]);
- g_assert_not_reached();
- }
- break;
- case EXCP_DEBUG:
- trapnr = gdb_handlesig(cs, TARGET_SIGTRAP);
- if (trapnr) {
- info.si_signo = trapnr;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, trapnr, QEMU_SI_FAULT, &info);
+ mmap_fork_end(child);
+ if (child) {
+ CPUState *cpu, *next_cpu;
+ /* Child processes created by fork() only have a single thread.
+ Discard information about the parent threads. */
+ CPU_FOREACH_SAFE(cpu, next_cpu) {
+ if (cpu != thread_cpu) {
+ QTAILQ_REMOVE_RCU(&cpus, cpu, node);
}
- break;
- case EXC_DEBUG:
- default:
- fprintf(stderr, "trapnr = %d\n", trapnr);
- g_assert_not_reached();
}
- process_pending_signals(env);
+ qemu_init_cpu_list();
+ gdbserver_fork(thread_cpu);
+ /* qemu_init_cpu_list() takes care of reinitializing the
+ * exclusive state, so we don't need to end_exclusive() here.
+ */
+ } else {
+ cpu_list_unlock();
+ end_exclusive();
}
}
-#endif /* TARGET_XTENSA */
-
__thread CPUState *thread_cpu;
bool qemu_cpu_is_self(CPUState *cpu)
}
if (*p == 'M') {
- guest_stack_size *= 1024 * 1024;
+ guest_stack_size *= MiB;
} else if (*p == 'k' || *p == 'K') {
- guest_stack_size *= 1024;
+ guest_stack_size *= KiB;
}
}
}
cpu_type = parse_cpu_model(cpu_model);
+ /* init tcg before creating CPUs and to get qemu_host_page_size */
tcg_exec_init(0);
- /* NOTE: we need to init the CPU at this stage to get
- qemu_host_page_size */
+
+ /* Reserving *too* much vm space via mmap can run into problems
+ with rlimits, oom due to page table creation, etc. We will still try it,
+ if directed by the command-line option, but not by default. */
+ if (HOST_LONG_BITS == 64 &&
+ TARGET_VIRT_ADDR_SPACE_BITS <= 32 &&
+ reserved_va == 0) {
+ /* reserved_va must be aligned with the host page size
+ * as it is used with mmap()
+ */
+ reserved_va = MAX_RESERVED_VA & qemu_host_page_mask;
+ }
cpu = cpu_create(cpu_type);
env = cpu->env_ptr;
envlist_free(envlist);
/*
- * Now that page sizes are configured in cpu_init() we can do
+ * Now that page sizes are configured in tcg_exec_init() we can do
* proper page alignment for guest_base.
*/
guest_base = HOST_PAGE_ALIGN(guest_base);
target_argc = argc - optind;
target_argv = calloc(target_argc + 1, sizeof (char *));
if (target_argv == NULL) {
- (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
- exit(EXIT_FAILURE);
+ (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
+ exit(EXIT_FAILURE);
}
/*
tcg_prologue_init(tcg_ctx);
tcg_region_init();
-#if defined(TARGET_I386)
- env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
- env->hflags |= HF_PE_MASK | HF_CPL_MASK;
- if (env->features[FEAT_1_EDX] & CPUID_SSE) {
- env->cr[4] |= CR4_OSFXSR_MASK;
- env->hflags |= HF_OSFXSR_MASK;
- }
-#ifndef TARGET_ABI32
- /* enable 64 bit mode if possible */
- if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
- fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
- exit(EXIT_FAILURE);
- }
- env->cr[4] |= CR4_PAE_MASK;
- env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
- env->hflags |= HF_LMA_MASK;
-#endif
-
- /* flags setup : we activate the IRQs by default as in user mode */
- env->eflags |= IF_MASK;
-
- /* linux register setup */
-#ifndef TARGET_ABI32
- env->regs[R_EAX] = regs->rax;
- env->regs[R_EBX] = regs->rbx;
- env->regs[R_ECX] = regs->rcx;
- env->regs[R_EDX] = regs->rdx;
- env->regs[R_ESI] = regs->rsi;
- env->regs[R_EDI] = regs->rdi;
- env->regs[R_EBP] = regs->rbp;
- env->regs[R_ESP] = regs->rsp;
- env->eip = regs->rip;
-#else
- env->regs[R_EAX] = regs->eax;
- env->regs[R_EBX] = regs->ebx;
- env->regs[R_ECX] = regs->ecx;
- env->regs[R_EDX] = regs->edx;
- env->regs[R_ESI] = regs->esi;
- env->regs[R_EDI] = regs->edi;
- env->regs[R_EBP] = regs->ebp;
- env->regs[R_ESP] = regs->esp;
- env->eip = regs->eip;
-#endif
-
- /* linux interrupt setup */
-#ifndef TARGET_ABI32
- env->idt.limit = 511;
-#else
- env->idt.limit = 255;
-#endif
- env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
- PROT_READ|PROT_WRITE,
- MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
- idt_table = g2h(env->idt.base);
- set_idt(0, 0);
- set_idt(1, 0);
- set_idt(2, 0);
- set_idt(3, 3);
- set_idt(4, 3);
- set_idt(5, 0);
- set_idt(6, 0);
- set_idt(7, 0);
- set_idt(8, 0);
- set_idt(9, 0);
- set_idt(10, 0);
- set_idt(11, 0);
- set_idt(12, 0);
- set_idt(13, 0);
- set_idt(14, 0);
- set_idt(15, 0);
- set_idt(16, 0);
- set_idt(17, 0);
- set_idt(18, 0);
- set_idt(19, 0);
- set_idt(0x80, 3);
-
- /* linux segment setup */
- {
- uint64_t *gdt_table;
- env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
- PROT_READ|PROT_WRITE,
- MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
- env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
- gdt_table = g2h(env->gdt.base);
-#ifdef TARGET_ABI32
- write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
- DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
- (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
-#else
- /* 64 bit code segment */
- write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
- DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
- DESC_L_MASK |
- (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
-#endif
- write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
- DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
- (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
- }
- cpu_x86_load_seg(env, R_CS, __USER_CS);
- cpu_x86_load_seg(env, R_SS, __USER_DS);
-#ifdef TARGET_ABI32
- cpu_x86_load_seg(env, R_DS, __USER_DS);
- cpu_x86_load_seg(env, R_ES, __USER_DS);
- cpu_x86_load_seg(env, R_FS, __USER_DS);
- cpu_x86_load_seg(env, R_GS, __USER_DS);
- /* This hack makes Wine work... */
- env->segs[R_FS].selector = 0;
-#else
- cpu_x86_load_seg(env, R_DS, 0);
- cpu_x86_load_seg(env, R_ES, 0);
- cpu_x86_load_seg(env, R_FS, 0);
- cpu_x86_load_seg(env, R_GS, 0);
-#endif
-#elif defined(TARGET_AARCH64)
- {
- int i;
-
- if (!(arm_feature(env, ARM_FEATURE_AARCH64))) {
- fprintf(stderr,
- "The selected ARM CPU does not support 64 bit mode\n");
- exit(EXIT_FAILURE);
- }
-
- for (i = 0; i < 31; i++) {
- env->xregs[i] = regs->regs[i];
- }
- env->pc = regs->pc;
- env->xregs[31] = regs->sp;
-#ifdef TARGET_WORDS_BIGENDIAN
- env->cp15.sctlr_el[1] |= SCTLR_E0E;
- for (i = 1; i < 4; ++i) {
- env->cp15.sctlr_el[i] |= SCTLR_EE;
- }
-#endif
- }
-#elif defined(TARGET_ARM)
- {
- int i;
- cpsr_write(env, regs->uregs[16], CPSR_USER | CPSR_EXEC,
- CPSRWriteByInstr);
- for(i = 0; i < 16; i++) {
- env->regs[i] = regs->uregs[i];
- }
-#ifdef TARGET_WORDS_BIGENDIAN
- /* Enable BE8. */
- if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
- && (info->elf_flags & EF_ARM_BE8)) {
- env->uncached_cpsr |= CPSR_E;
- env->cp15.sctlr_el[1] |= SCTLR_E0E;
- } else {
- env->cp15.sctlr_el[1] |= SCTLR_B;
- }
-#endif
- }
-#elif defined(TARGET_SPARC)
- {
- int i;
- env->pc = regs->pc;
- env->npc = regs->npc;
- env->y = regs->y;
- for(i = 0; i < 8; i++)
- env->gregs[i] = regs->u_regs[i];
- for(i = 0; i < 8; i++)
- env->regwptr[i] = regs->u_regs[i + 8];
- }
-#elif defined(TARGET_PPC)
- {
- int i;
-
-#if defined(TARGET_PPC64)
- int flag = (env->insns_flags2 & PPC2_BOOKE206) ? MSR_CM : MSR_SF;
-#if defined(TARGET_ABI32)
- env->msr &= ~((target_ulong)1 << flag);
-#else
- env->msr |= (target_ulong)1 << flag;
-#endif
-#endif
- env->nip = regs->nip;
- for(i = 0; i < 32; i++) {
- env->gpr[i] = regs->gpr[i];
- }
- }
-#elif defined(TARGET_M68K)
- {
- env->pc = regs->pc;
- env->dregs[0] = regs->d0;
- env->dregs[1] = regs->d1;
- env->dregs[2] = regs->d2;
- env->dregs[3] = regs->d3;
- env->dregs[4] = regs->d4;
- env->dregs[5] = regs->d5;
- env->dregs[6] = regs->d6;
- env->dregs[7] = regs->d7;
- env->aregs[0] = regs->a0;
- env->aregs[1] = regs->a1;
- env->aregs[2] = regs->a2;
- env->aregs[3] = regs->a3;
- env->aregs[4] = regs->a4;
- env->aregs[5] = regs->a5;
- env->aregs[6] = regs->a6;
- env->aregs[7] = regs->usp;
- env->sr = regs->sr;
- ts->sim_syscalls = 1;
- }
-#elif defined(TARGET_MICROBLAZE)
- {
- env->regs[0] = regs->r0;
- env->regs[1] = regs->r1;
- env->regs[2] = regs->r2;
- env->regs[3] = regs->r3;
- env->regs[4] = regs->r4;
- env->regs[5] = regs->r5;
- env->regs[6] = regs->r6;
- env->regs[7] = regs->r7;
- env->regs[8] = regs->r8;
- env->regs[9] = regs->r9;
- env->regs[10] = regs->r10;
- env->regs[11] = regs->r11;
- env->regs[12] = regs->r12;
- env->regs[13] = regs->r13;
- env->regs[14] = regs->r14;
- env->regs[15] = regs->r15;
- env->regs[16] = regs->r16;
- env->regs[17] = regs->r17;
- env->regs[18] = regs->r18;
- env->regs[19] = regs->r19;
- env->regs[20] = regs->r20;
- env->regs[21] = regs->r21;
- env->regs[22] = regs->r22;
- env->regs[23] = regs->r23;
- env->regs[24] = regs->r24;
- env->regs[25] = regs->r25;
- env->regs[26] = regs->r26;
- env->regs[27] = regs->r27;
- env->regs[28] = regs->r28;
- env->regs[29] = regs->r29;
- env->regs[30] = regs->r30;
- env->regs[31] = regs->r31;
- env->sregs[SR_PC] = regs->pc;
- }
-#elif defined(TARGET_MIPS)
- {
- int i;
-
- for(i = 0; i < 32; i++) {
- env->active_tc.gpr[i] = regs->regs[i];
- }
- env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
- if (regs->cp0_epc & 1) {
- env->hflags |= MIPS_HFLAG_M16;
- }
- if (((info->elf_flags & EF_MIPS_NAN2008) != 0) !=
- ((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0)) {
- if ((env->active_fpu.fcr31_rw_bitmask &
- (1 << FCR31_NAN2008)) == 0) {
- fprintf(stderr, "ELF binary's NaN mode not supported by CPU\n");
- exit(1);
- }
- if ((info->elf_flags & EF_MIPS_NAN2008) != 0) {
- env->active_fpu.fcr31 |= (1 << FCR31_NAN2008);
- } else {
- env->active_fpu.fcr31 &= ~(1 << FCR31_NAN2008);
- }
- restore_snan_bit_mode(env);
- }
- }
-#elif defined(TARGET_NIOS2)
- {
- env->regs[0] = 0;
- env->regs[1] = regs->r1;
- env->regs[2] = regs->r2;
- env->regs[3] = regs->r3;
- env->regs[4] = regs->r4;
- env->regs[5] = regs->r5;
- env->regs[6] = regs->r6;
- env->regs[7] = regs->r7;
- env->regs[8] = regs->r8;
- env->regs[9] = regs->r9;
- env->regs[10] = regs->r10;
- env->regs[11] = regs->r11;
- env->regs[12] = regs->r12;
- env->regs[13] = regs->r13;
- env->regs[14] = regs->r14;
- env->regs[15] = regs->r15;
- /* TODO: unsigned long orig_r2; */
- env->regs[R_RA] = regs->ra;
- env->regs[R_FP] = regs->fp;
- env->regs[R_SP] = regs->sp;
- env->regs[R_GP] = regs->gp;
- env->regs[CR_ESTATUS] = regs->estatus;
- env->regs[R_EA] = regs->ea;
- /* TODO: unsigned long orig_r7; */
-
- /* Emulate eret when starting thread. */
- env->regs[R_PC] = regs->ea;
- }
-#elif defined(TARGET_OPENRISC)
- {
- int i;
-
- for (i = 0; i < 32; i++) {
- cpu_set_gpr(env, i, regs->gpr[i]);
- }
- env->pc = regs->pc;
- cpu_set_sr(env, regs->sr);
- }
-#elif defined(TARGET_RISCV)
- {
- env->pc = regs->sepc;
- env->gpr[xSP] = regs->sp;
- }
-#elif defined(TARGET_SH4)
- {
- int i;
-
- for(i = 0; i < 16; i++) {
- env->gregs[i] = regs->regs[i];
- }
- env->pc = regs->pc;
- }
-#elif defined(TARGET_ALPHA)
- {
- int i;
-
- for(i = 0; i < 28; i++) {
- env->ir[i] = ((abi_ulong *)regs)[i];
- }
- env->ir[IR_SP] = regs->usp;
- env->pc = regs->pc;
- }
-#elif defined(TARGET_CRIS)
- {
- env->regs[0] = regs->r0;
- env->regs[1] = regs->r1;
- env->regs[2] = regs->r2;
- env->regs[3] = regs->r3;
- env->regs[4] = regs->r4;
- env->regs[5] = regs->r5;
- env->regs[6] = regs->r6;
- env->regs[7] = regs->r7;
- env->regs[8] = regs->r8;
- env->regs[9] = regs->r9;
- env->regs[10] = regs->r10;
- env->regs[11] = regs->r11;
- env->regs[12] = regs->r12;
- env->regs[13] = regs->r13;
- env->regs[14] = info->start_stack;
- env->regs[15] = regs->acr;
- env->pc = regs->erp;
- }
-#elif defined(TARGET_S390X)
- {
- int i;
- for (i = 0; i < 16; i++) {
- env->regs[i] = regs->gprs[i];
- }
- env->psw.mask = regs->psw.mask;
- env->psw.addr = regs->psw.addr;
- }
-#elif defined(TARGET_TILEGX)
- {
- int i;
- for (i = 0; i < TILEGX_R_COUNT; i++) {
- env->regs[i] = regs->regs[i];
- }
- for (i = 0; i < TILEGX_SPR_COUNT; i++) {
- env->spregs[i] = 0;
- }
- env->pc = regs->pc;
- }
-#elif defined(TARGET_HPPA)
- {
- int i;
- for (i = 1; i < 32; i++) {
- env->gr[i] = regs->gr[i];
- }
- env->iaoq_f = regs->iaoq[0];
- env->iaoq_b = regs->iaoq[1];
- }
-#elif defined(TARGET_XTENSA)
- {
- int i;
- for (i = 0; i < 16; ++i) {
- env->regs[i] = regs->areg[i];
- }
- env->sregs[WINDOW_START] = regs->windowstart;
- env->pc = regs->pc;
- }
-#else
-#error unsupported target CPU
-#endif
-
-#if defined(TARGET_ARM) || defined(TARGET_M68K)
- ts->stack_base = info->start_stack;
- ts->heap_base = info->brk;
- /* This will be filled in on the first SYS_HEAPINFO call. */
- ts->heap_limit = 0;
-#endif
+ target_cpu_copy_regs(env, regs);
if (gdbstub_port) {
if (gdbserver_start(gdbstub_port) < 0) {
projects / mirror_qemu.git / blobdiff