* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"
+#include "qemu/timer.h"
+#include "sysemu/runstate.h"
+#include "fpu/softfloat.h"
+#include "trace.h"
void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
{
- HPPACPU *cpu = hppa_env_get_cpu(env);
- CPUState *cs = CPU(cpu);
+ CPUState *cs = env_cpu(env);
cs->exception_index = excp;
cpu_loop_exit(cs);
}
-static void QEMU_NORETURN dynexcp(CPUHPPAState *env, int excp, uintptr_t ra)
+void QEMU_NORETURN hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra)
{
- HPPACPU *cpu = hppa_env_get_cpu(env);
- CPUState *cs = CPU(cpu);
+ CPUState *cs = env_cpu(env);
cs->exception_index = excp;
cpu_loop_exit_restore(cs, ra);
}
-void HELPER(tsv)(CPUHPPAState *env, target_ulong cond)
+void HELPER(tsv)(CPUHPPAState *env, target_ureg cond)
{
- if (unlikely((target_long)cond < 0)) {
- dynexcp(env, EXCP_SIGFPE, GETPC());
+ if (unlikely((target_sreg)cond < 0)) {
+ hppa_dynamic_excp(env, EXCP_OVERFLOW, GETPC());
}
}
-void HELPER(tcond)(CPUHPPAState *env, target_ulong cond)
+void HELPER(tcond)(CPUHPPAState *env, target_ureg cond)
{
if (unlikely(cond)) {
- dynexcp(env, EXCP_SIGFPE, GETPC());
+ hppa_dynamic_excp(env, EXCP_COND, GETPC());
}
}
static void atomic_store_3(CPUHPPAState *env, target_ulong addr, uint32_t val,
uint32_t mask, uintptr_t ra)
{
+#ifdef CONFIG_USER_ONLY
uint32_t old, new, cmp;
-#ifdef CONFIG_USER_ONLY
uint32_t *haddr = g2h(addr - 1);
old = *haddr;
while (1) {
new = (old & ~mask) | (val & mask);
- cmp = atomic_cmpxchg(haddr, old, new);
+ cmp = qatomic_cmpxchg(haddr, old, new);
if (cmp == old) {
return;
}
old = cmp;
}
#else
-#error "Not implemented."
+ /* FIXME -- we can do better. */
+ cpu_loop_exit_atomic(env_cpu(env), ra);
#endif
}
-static void do_stby_b(CPUHPPAState *env, target_ulong addr, target_ulong val,
- bool parallel)
+static void do_stby_b(CPUHPPAState *env, target_ulong addr, target_ureg val,
+ bool parallel, uintptr_t ra)
{
- uintptr_t ra = GETPC();
-
switch (addr & 3) {
case 3:
cpu_stb_data_ra(env, addr, val, ra);
}
}
-void HELPER(stby_b)(CPUHPPAState *env, target_ulong addr, target_ulong val)
+void HELPER(stby_b)(CPUHPPAState *env, target_ulong addr, target_ureg val)
{
- do_stby_b(env, addr, val, false);
+ do_stby_b(env, addr, val, false, GETPC());
}
void HELPER(stby_b_parallel)(CPUHPPAState *env, target_ulong addr,
- target_ulong val)
+ target_ureg val)
{
- do_stby_b(env, addr, val, true);
+ do_stby_b(env, addr, val, true, GETPC());
}
-static void do_stby_e(CPUHPPAState *env, target_ulong addr, target_ulong val,
- bool parallel)
+static void do_stby_e(CPUHPPAState *env, target_ulong addr, target_ureg val,
+ bool parallel, uintptr_t ra)
{
- uintptr_t ra = GETPC();
-
switch (addr & 3) {
case 3:
/* The 3 byte store must appear atomic. */
default:
/* Nothing is stored, but protection is checked and the
cacheline is marked dirty. */
-#ifndef CONFIG_USER_ONLY
- probe_write(env, addr, cpu_mmu_index(env, 0), ra);
-#endif
+ probe_write(env, addr, 0, cpu_mmu_index(env, 0), ra);
break;
}
}
-void HELPER(stby_e)(CPUHPPAState *env, target_ulong addr, target_ulong val)
+void HELPER(stby_e)(CPUHPPAState *env, target_ulong addr, target_ureg val)
{
- do_stby_e(env, addr, val, false);
+ do_stby_e(env, addr, val, false, GETPC());
}
void HELPER(stby_e_parallel)(CPUHPPAState *env, target_ulong addr,
- target_ulong val)
+ target_ureg val)
{
- do_stby_e(env, addr, val, true);
+ do_stby_e(env, addr, val, true, GETPC());
}
-target_ulong HELPER(probe_r)(target_ulong addr)
+void HELPER(ldc_check)(target_ulong addr)
{
- return page_check_range(addr, 1, PAGE_READ);
+ if (unlikely(addr & 0xf)) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "Undefined ldc to unaligned address mod 16: "
+ TARGET_FMT_lx "\n", addr);
+ }
}
-target_ulong HELPER(probe_w)(target_ulong addr)
+target_ureg HELPER(probe)(CPUHPPAState *env, target_ulong addr,
+ uint32_t level, uint32_t want)
{
- return page_check_range(addr, 1, PAGE_WRITE);
+#ifdef CONFIG_USER_ONLY
+ return page_check_range(addr, 1, want);
+#else
+ int prot, excp;
+ hwaddr phys;
+
+ trace_hppa_tlb_probe(addr, level, want);
+ /* Fail if the requested privilege level is higher than current. */
+ if (level < (env->iaoq_f & 3)) {
+ return 0;
+ }
+
+ excp = hppa_get_physical_address(env, addr, level, 0, &phys, &prot);
+ if (excp >= 0) {
+ if (env->psw & PSW_Q) {
+ /* ??? Needs tweaking for hppa64. */
+ env->cr[CR_IOR] = addr;
+ env->cr[CR_ISR] = addr >> 32;
+ }
+ if (excp == EXCP_DTLB_MISS) {
+ excp = EXCP_NA_DTLB_MISS;
+ }
+ hppa_dynamic_excp(env, excp, GETPC());
+ }
+ return (want & prot) != 0;
+#endif
}
void HELPER(loaded_fr0)(CPUHPPAState *env)
env->fr[0] = (uint64_t)shadow << 32;
if (hard_exp & shadow) {
- dynexcp(env, EXCP_SIGFPE, ra);
+ hppa_dynamic_excp(env, EXCP_ASSIST, ra);
}
}
float64 HELPER(fcnv_s_d)(CPUHPPAState *env, float32 arg)
{
float64 ret = float32_to_float64(arg, &env->fp_status);
- ret = float64_maybe_silence_nan(ret, &env->fp_status);
update_fr0_op(env, GETPC());
return ret;
}
float32 HELPER(fcnv_d_s)(CPUHPPAState *env, float64 arg)
{
float32 ret = float64_to_float32(arg, &env->fp_status);
- ret = float32_maybe_silence_nan(ret, &env->fp_status);
update_fr0_op(env, GETPC());
return ret;
}
return ret;
}
-static void update_fr0_cmp(CPUHPPAState *env, uint32_t y, uint32_t c, int r)
+static void update_fr0_cmp(CPUHPPAState *env, uint32_t y,
+ uint32_t c, FloatRelation r)
{
uint32_t shadow = env->fr0_shadow;
void HELPER(fcmp_s)(CPUHPPAState *env, float32 a, float32 b,
uint32_t y, uint32_t c)
{
- int r;
+ FloatRelation r;
if (c & 1) {
r = float32_compare(a, b, &env->fp_status);
} else {
void HELPER(fcmp_d)(CPUHPPAState *env, float64 a, float64 b,
uint32_t y, uint32_t c)
{
- int r;
+ FloatRelation r;
if (c & 1) {
r = float64_compare(a, b, &env->fp_status);
} else {
update_fr0_op(env, GETPC());
return ret;
}
+
+target_ureg HELPER(read_interval_timer)(void)
+{
+#ifdef CONFIG_USER_ONLY
+ /* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist.
+ Just pass through the host cpu clock ticks. */
+ return cpu_get_host_ticks();
+#else
+ /* In system mode we have access to a decent high-resolution clock.
+ In order to make OS-level time accounting work with the cr16,
+ present it with a well-timed clock fixed at 250MHz. */
+ return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2;
+#endif
+}
+
+#ifndef CONFIG_USER_ONLY
+void HELPER(write_interval_timer)(CPUHPPAState *env, target_ureg val)
+{
+ HPPACPU *cpu = env_archcpu(env);
+ uint64_t current = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ uint64_t timeout;
+
+ /* Even in 64-bit mode, the comparator is always 32-bit. But the
+ value we expose to the guest is 1/4 of the speed of the clock,
+ so moosh in 34 bits. */
+ timeout = deposit64(current, 0, 34, (uint64_t)val << 2);
+
+ /* If the mooshing puts the clock in the past, advance to next round. */
+ if (timeout < current + 1000) {
+ timeout += 1ULL << 34;
+ }
+
+ cpu->env.cr[CR_IT] = timeout;
+ timer_mod(cpu->alarm_timer, timeout);
+}
+
+void HELPER(halt)(CPUHPPAState *env)
+{
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ helper_excp(env, EXCP_HLT);
+}
+
+void HELPER(reset)(CPUHPPAState *env)
+{
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ helper_excp(env, EXCP_HLT);
+}
+
+target_ureg HELPER(swap_system_mask)(CPUHPPAState *env, target_ureg nsm)
+{
+ target_ulong psw = env->psw;
+ /*
+ * Setting the PSW Q bit to 1, if it was not already 1, is an
+ * undefined operation.
+ *
+ * However, HP-UX 10.20 does this with the SSM instruction.
+ * Tested this on HP9000/712 and HP9000/785/C3750 and both
+ * machines set the Q bit from 0 to 1 without an exception,
+ * so let this go without comment.
+ */
+ env->psw = (psw & ~PSW_SM) | (nsm & PSW_SM);
+ return psw & PSW_SM;
+}
+
+void HELPER(rfi)(CPUHPPAState *env)
+{
+ env->iasq_f = (uint64_t)env->cr[CR_IIASQ] << 32;
+ env->iasq_b = (uint64_t)env->cr_back[0] << 32;
+ env->iaoq_f = env->cr[CR_IIAOQ];
+ env->iaoq_b = env->cr_back[1];
+ cpu_hppa_put_psw(env, env->cr[CR_IPSW]);
+}
+
+void HELPER(rfi_r)(CPUHPPAState *env)
+{
+ env->gr[1] = env->shadow[0];
+ env->gr[8] = env->shadow[1];
+ env->gr[9] = env->shadow[2];
+ env->gr[16] = env->shadow[3];
+ env->gr[17] = env->shadow[4];
+ env->gr[24] = env->shadow[5];
+ env->gr[25] = env->shadow[6];
+ helper_rfi(env);
+}
+#endif
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