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-rw-r--r--target-mips/cpu.h89
-rw-r--r--target-mips/gdbstub.c8
-rw-r--r--target-mips/op_helper.c91
3 files changed, 102 insertions, 86 deletions
diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index a08c2c8467..dd72d1ef50 100644
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -904,4 +904,93 @@ static inline void compute_hflags(CPUMIPSState *env)
}
}
+#ifndef CONFIG_USER_ONLY
+/* Called for updates to CP0_Status. */
+static inline void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
+{
+ int32_t tcstatus, *tcst;
+ uint32_t v = cpu->CP0_Status;
+ uint32_t cu, mx, asid, ksu;
+ uint32_t mask = ((1 << CP0TCSt_TCU3)
+ | (1 << CP0TCSt_TCU2)
+ | (1 << CP0TCSt_TCU1)
+ | (1 << CP0TCSt_TCU0)
+ | (1 << CP0TCSt_TMX)
+ | (3 << CP0TCSt_TKSU)
+ | (0xff << CP0TCSt_TASID));
+
+ cu = (v >> CP0St_CU0) & 0xf;
+ mx = (v >> CP0St_MX) & 0x1;
+ ksu = (v >> CP0St_KSU) & 0x3;
+ asid = env->CP0_EntryHi & 0xff;
+
+ tcstatus = cu << CP0TCSt_TCU0;
+ tcstatus |= mx << CP0TCSt_TMX;
+ tcstatus |= ksu << CP0TCSt_TKSU;
+ tcstatus |= asid;
+
+ if (tc == cpu->current_tc) {
+ tcst = &cpu->active_tc.CP0_TCStatus;
+ } else {
+ tcst = &cpu->tcs[tc].CP0_TCStatus;
+ }
+
+ *tcst &= ~mask;
+ *tcst |= tcstatus;
+ compute_hflags(cpu);
+}
+
+static inline void cpu_mips_store_status(CPUMIPSState *env, target_ulong val)
+{
+ uint32_t mask = env->CP0_Status_rw_bitmask;
+
+ if (env->insn_flags & ISA_MIPS32R6) {
+ bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3;
+
+ if (has_supervisor && extract32(val, CP0St_KSU, 2) == 0x3) {
+ mask &= ~(3 << CP0St_KSU);
+ }
+ mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & val);
+ }
+
+ env->CP0_Status = (env->CP0_Status & ~mask) | (val & mask);
+ if (env->CP0_Config3 & (1 << CP0C3_MT)) {
+ sync_c0_status(env, env, env->current_tc);
+ } else {
+ compute_hflags(env);
+ }
+}
+
+static inline void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val)
+{
+ uint32_t mask = 0x00C00300;
+ uint32_t old = env->CP0_Cause;
+ int i;
+
+ if (env->insn_flags & ISA_MIPS32R2) {
+ mask |= 1 << CP0Ca_DC;
+ }
+ if (env->insn_flags & ISA_MIPS32R6) {
+ mask &= ~((1 << CP0Ca_WP) & val);
+ }
+
+ env->CP0_Cause = (env->CP0_Cause & ~mask) | (val & mask);
+
+ if ((old ^ env->CP0_Cause) & (1 << CP0Ca_DC)) {
+ if (env->CP0_Cause & (1 << CP0Ca_DC)) {
+ cpu_mips_stop_count(env);
+ } else {
+ cpu_mips_start_count(env);
+ }
+ }
+
+ /* Set/reset software interrupts */
+ for (i = 0 ; i < 2 ; i++) {
+ if ((old ^ env->CP0_Cause) & (1 << (CP0Ca_IP + i))) {
+ cpu_mips_soft_irq(env, i, env->CP0_Cause & (1 << (CP0Ca_IP + i)));
+ }
+ }
+}
+#endif
+
#endif /* !defined (__MIPS_CPU_H__) */
diff --git a/target-mips/gdbstub.c b/target-mips/gdbstub.c
index e86df0e57c..964e6a7733 100644
--- a/target-mips/gdbstub.c
+++ b/target-mips/gdbstub.c
@@ -112,7 +112,9 @@ int mips_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
}
switch (n) {
case 32:
- env->CP0_Status = tmp;
+#ifndef CONFIG_USER_ONLY
+ cpu_mips_store_status(env, tmp);
+#endif
break;
case 33:
env->active_tc.LO[0] = tmp;
@@ -124,7 +126,9 @@ int mips_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
env->CP0_BadVAddr = tmp;
break;
case 36:
- env->CP0_Cause = tmp;
+#ifndef CONFIG_USER_ONLY
+ cpu_mips_store_cause(env, tmp);
+#endif
break;
case 37:
env->active_tc.PC = tmp & ~(target_ulong)1;
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index a0cc729526..1ec2756373 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -625,40 +625,9 @@ static CPUMIPSState *mips_cpu_map_tc(CPUMIPSState *env, int *tc)
These helper call synchronizes the regs for a given cpu. */
-/* Called for updates to CP0_Status. */
-static void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
-{
- int32_t tcstatus, *tcst;
- uint32_t v = cpu->CP0_Status;
- uint32_t cu, mx, asid, ksu;
- uint32_t mask = ((1 << CP0TCSt_TCU3)
- | (1 << CP0TCSt_TCU2)
- | (1 << CP0TCSt_TCU1)
- | (1 << CP0TCSt_TCU0)
- | (1 << CP0TCSt_TMX)
- | (3 << CP0TCSt_TKSU)
- | (0xff << CP0TCSt_TASID));
-
- cu = (v >> CP0St_CU0) & 0xf;
- mx = (v >> CP0St_MX) & 0x1;
- ksu = (v >> CP0St_KSU) & 0x3;
- asid = env->CP0_EntryHi & 0xff;
-
- tcstatus = cu << CP0TCSt_TCU0;
- tcstatus |= mx << CP0TCSt_TMX;
- tcstatus |= ksu << CP0TCSt_TKSU;
- tcstatus |= asid;
-
- if (tc == cpu->current_tc) {
- tcst = &cpu->active_tc.CP0_TCStatus;
- } else {
- tcst = &cpu->tcs[tc].CP0_TCStatus;
- }
-
- *tcst &= ~mask;
- *tcst |= tcstatus;
- compute_hflags(cpu);
-}
+/* Called for updates to CP0_Status. Defined in "cpu.h" for gdbstub.c. */
+/* static inline void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu,
+ int tc); */
/* Called for updates to CP0_TCStatus. */
static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc,
@@ -1420,25 +1389,10 @@ void helper_mtc0_status(CPUMIPSState *env, target_ulong arg1)
{
MIPSCPU *cpu = mips_env_get_cpu(env);
uint32_t val, old;
- uint32_t mask = env->CP0_Status_rw_bitmask;
-
- if (env->insn_flags & ISA_MIPS32R6) {
- bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3;
-
- if (has_supervisor && extract32(arg1, CP0St_KSU, 2) == 0x3) {
- mask &= ~(3 << CP0St_KSU);
- }
- mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & arg1);
- }
- val = arg1 & mask;
old = env->CP0_Status;
- env->CP0_Status = (env->CP0_Status & ~mask) | val;
- if (env->CP0_Config3 & (1 << CP0C3_MT)) {
- sync_c0_status(env, env, env->current_tc);
- } else {
- compute_hflags(env);
- }
+ cpu_mips_store_status(env, arg1);
+ val = env->CP0_Status;
if (qemu_loglevel_mask(CPU_LOG_EXEC)) {
qemu_log("Status %08x (%08x) => %08x (%08x) Cause %08x",
@@ -1477,40 +1431,9 @@ void helper_mtc0_srsctl(CPUMIPSState *env, target_ulong arg1)
env->CP0_SRSCtl = (env->CP0_SRSCtl & ~mask) | (arg1 & mask);
}
-static void mtc0_cause(CPUMIPSState *cpu, target_ulong arg1)
-{
- uint32_t mask = 0x00C00300;
- uint32_t old = cpu->CP0_Cause;
- int i;
-
- if (cpu->insn_flags & ISA_MIPS32R2) {
- mask |= 1 << CP0Ca_DC;
- }
- if (cpu->insn_flags & ISA_MIPS32R6) {
- mask &= ~((1 << CP0Ca_WP) & arg1);
- }
-
- cpu->CP0_Cause = (cpu->CP0_Cause & ~mask) | (arg1 & mask);
-
- if ((old ^ cpu->CP0_Cause) & (1 << CP0Ca_DC)) {
- if (cpu->CP0_Cause & (1 << CP0Ca_DC)) {
- cpu_mips_stop_count(cpu);
- } else {
- cpu_mips_start_count(cpu);
- }
- }
-
- /* Set/reset software interrupts */
- for (i = 0 ; i < 2 ; i++) {
- if ((old ^ cpu->CP0_Cause) & (1 << (CP0Ca_IP + i))) {
- cpu_mips_soft_irq(cpu, i, cpu->CP0_Cause & (1 << (CP0Ca_IP + i)));
- }
- }
-}
-
void helper_mtc0_cause(CPUMIPSState *env, target_ulong arg1)
{
- mtc0_cause(env, arg1);
+ cpu_mips_store_cause(env, arg1);
}
void helper_mttc0_cause(CPUMIPSState *env, target_ulong arg1)
@@ -1518,7 +1441,7 @@ void helper_mttc0_cause(CPUMIPSState *env, target_ulong arg1)
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
- mtc0_cause(other, arg1);
+ cpu_mips_store_cause(other, arg1);
}
target_ulong helper_mftc0_epc(CPUMIPSState *env)
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 08:11:56 +0000