*/
#include "qemu/osdep.h"
-#include "qemu-common.h"
#include "qemu.h"
#include "user-internals.h"
#include "cpu_loop-common.h"
BRK_DIVZERO = 7
};
-static int do_break(CPUMIPSState *env, target_siginfo_t *info,
- unsigned int code)
+static void do_tr_or_bp(CPUMIPSState *env, unsigned int code, bool trap)
{
- int ret = -1;
+ target_ulong pc = env->active_tc.PC;
switch (code) {
case BRK_OVERFLOW:
+ force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF, pc);
+ break;
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;
+ force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTDIV, pc);
break;
default:
- info->si_signo = TARGET_SIGTRAP;
- info->si_errno = 0;
- queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info);
- ret = 0;
+ if (trap) {
+ force_sig(TARGET_SIGTRAP);
+ } else {
+ force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, pc);
+ }
break;
}
-
- return ret;
}
void cpu_loop(CPUMIPSState *env)
{
CPUState *cs = env_cpu(env);
- target_siginfo_t info;
- int trapnr;
+ int trapnr, si_code;
+ unsigned int code;
abi_long ret;
# ifdef TARGET_ABI_MIPSO32
unsigned int syscall_num;
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) {
+ if (ret == -QEMU_ERESTARTSYS) {
env->active_tc.PC -= 4;
break;
}
- if (ret == -TARGET_QEMU_ESIGRETURN) {
+ if (ret == -QEMU_ESIGRETURN) {
/* Returning from a successful sigreturn syscall.
Avoid clobbering register state. */
break;
}
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);
+ case EXCP_DSPDIS:
+ force_sig(TARGET_SIGILL);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
- info.si_signo = TARGET_SIGTRAP;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- 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);
+ force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT,
+ env->active_tc.PC);
break;
case EXCP_FPE:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
- info.si_code = TARGET_FPE_FLTUNK;
+ si_code = TARGET_FPE_FLTUNK;
if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INVALID) {
- info.si_code = TARGET_FPE_FLTINV;
+ si_code = TARGET_FPE_FLTINV;
} else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_DIV0) {
- info.si_code = TARGET_FPE_FLTDIV;
+ si_code = TARGET_FPE_FLTDIV;
} else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_OVERFLOW) {
- info.si_code = TARGET_FPE_FLTOVF;
+ si_code = TARGET_FPE_FLTOVF;
} else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_UNDERFLOW) {
- info.si_code = TARGET_FPE_FLTUND;
+ si_code = TARGET_FPE_FLTUND;
} else if (GET_FP_CAUSE(env->active_fpu.fcr31) & FP_INEXACT) {
- info.si_code = TARGET_FPE_FLTRES;
+ si_code = TARGET_FPE_FLTRES;
}
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ force_sig_fault(TARGET_SIGFPE, si_code, env->active_tc.PC);
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;
- }
+ /*
+ * As described in the original Linux kernel code, the below
+ * checks on 'code' are to work around an old assembly bug.
+ */
+ code = env->error_code;
+ if (code >= (1 << 10)) {
+ code >>= 10;
}
+ do_tr_or_bp(env, code, false);
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;
- }
- }
+ do_tr_or_bp(env, env->error_code, true);
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();
}
env->CP0_Status |= (1 << CP0St_FR);
env->hflags |= MIPS_HFLAG_F64;
}
- } else if (!prog_req.fre && !prog_req.frdefault &&
+ } else if (prog_req.fr1) {
+ env->CP0_Status |= (1 << CP0St_FR);
+ env->hflags |= MIPS_HFLAG_F64;
+ } else if (!prog_req.fre && !prog_req.frdefault &&
!prog_req.fr1 && !prog_req.single && !prog_req.soft) {
fprintf(stderr, "qemu: Can't find a matching FPU mode\n");
exit(1);
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