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target/mips: Amend CP0 WatchHi register implementation

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WatchHi is extended by the field MemoryMapID with the GINVT instruction.
The field is accessible by MTHC0/MFHC0 in 32-bit architectures and DMTC0/
DMFC0 in 64-bit architectures.

Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579883929-1517-4-git-send-email-aleksandar.markovic@rt-rk.com>
This commit is contained in:
Yongbok Kim 2019-12-20 10:34:09 +01:00 committed by Aleksandar Markovic
parent 6cdda0ff4b
commit feafe82cc2
5 changed files with 69 additions and 7 deletions
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2
target/mips/cpu.h
View file

@ -961,7 +961,7 @@ struct CPUMIPSState {
/*
* CP0 Register 19
*/
int32_t CP0_WatchHi[8];
uint64_t CP0_WatchHi[8];
#define CP0WH_ASID 16
/*
* CP0 Register 20

3
target/mips/helper.h
View file

@ -78,6 +78,7 @@ DEF_HELPER_1(mfc0_maar, tl, env)
DEF_HELPER_1(mfhc0_maar, tl, env)
DEF_HELPER_2(mfc0_watchlo, tl, env, i32)
DEF_HELPER_2(mfc0_watchhi, tl, env, i32)
DEF_HELPER_2(mfhc0_watchhi, tl, env, i32)
DEF_HELPER_1(mfc0_debug, tl, env)
DEF_HELPER_1(mftc0_debug, tl, env)
#ifdef TARGET_MIPS64
@ -89,6 +90,7 @@ DEF_HELPER_1(dmfc0_tcschefback, tl, env)
DEF_HELPER_1(dmfc0_lladdr, tl, env)
DEF_HELPER_1(dmfc0_maar, tl, env)
DEF_HELPER_2(dmfc0_watchlo, tl, env, i32)
DEF_HELPER_2(dmfc0_watchhi, tl, env, i32)
DEF_HELPER_1(dmfc0_saar, tl, env)
#endif /* TARGET_MIPS64 */
@ -159,6 +161,7 @@ DEF_HELPER_2(mthc0_maar, void, env, tl)
DEF_HELPER_2(mtc0_maari, void, env, tl)
DEF_HELPER_3(mtc0_watchlo, void, env, tl, i32)
DEF_HELPER_3(mtc0_watchhi, void, env, tl, i32)
DEF_HELPER_3(mthc0_watchhi, void, env, tl, i32)
DEF_HELPER_2(mtc0_xcontext, void, env, tl)
DEF_HELPER_2(mtc0_framemask, void, env, tl)
DEF_HELPER_2(mtc0_debug, void, env, tl)

6
target/mips/machine.c
View file

@ -212,8 +212,8 @@ const VMStateDescription vmstate_tlb = {
const VMStateDescription vmstate_mips_cpu = {
.name = "cpu",
.version_id = 18,
.minimum_version_id = 18,
.version_id = 19,
.minimum_version_id = 19,
.post_load = cpu_post_load,
.fields = (VMStateField[]) {
/* Active TC */
@ -296,7 +296,7 @@ const VMStateDescription vmstate_mips_cpu = {
VMSTATE_INT32(env.CP0_MAARI, MIPSCPU),
VMSTATE_UINTTL(env.lladdr, MIPSCPU),
VMSTATE_UINTTL_ARRAY(env.CP0_WatchLo, MIPSCPU, 8),
VMSTATE_INT32_ARRAY(env.CP0_WatchHi, MIPSCPU, 8),
VMSTATE_UINT64_ARRAY(env.CP0_WatchHi, MIPSCPU, 8),
VMSTATE_UINTTL(env.CP0_XContext, MIPSCPU),
VMSTATE_INT32(env.CP0_Framemask, MIPSCPU),
VMSTATE_INT32(env.CP0_Debug, MIPSCPU),

23
target/mips/op_helper.c
View file

@ -945,7 +945,12 @@ target_ulong helper_mfc0_watchlo(CPUMIPSState *env, uint32_t sel)
target_ulong helper_mfc0_watchhi(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchHi[sel];
return (int32_t) env->CP0_WatchHi[sel];
}
target_ulong helper_mfhc0_watchhi(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchHi[sel] >> 32;
}
target_ulong helper_mfc0_debug(CPUMIPSState *env)
@ -1016,6 +1021,11 @@ target_ulong helper_dmfc0_watchlo(CPUMIPSState *env, uint32_t sel)
return env->CP0_WatchLo[sel];
}
target_ulong helper_dmfc0_watchhi(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchHi[sel];
}
target_ulong helper_dmfc0_saar(CPUMIPSState *env)
{
if ((env->CP0_SAARI & 0x3f) < 2) {
@ -1869,11 +1879,20 @@ void helper_mtc0_watchlo(CPUMIPSState *env, target_ulong arg1, uint32_t sel)
void helper_mtc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel)
{
int mask = 0x40000FF8 | (env->CP0_EntryHi_ASID_mask << CP0WH_ASID);
uint64_t mask = 0x40000FF8 | (env->CP0_EntryHi_ASID_mask << CP0WH_ASID);
if ((env->CP0_Config5 >> CP0C5_MI) & 1) {
mask |= 0xFFFFFFFF00000000ULL; /* MMID */
}
env->CP0_WatchHi[sel] = arg1 & mask;
env->CP0_WatchHi[sel] &= ~(env->CP0_WatchHi[sel] & arg1 & 0x7);
}
void helper_mthc0_watchhi(CPUMIPSState *env, target_ulong arg1, uint32_t sel)
{
env->CP0_WatchHi[sel] = ((uint64_t) (arg1) << 32) |
(env->CP0_WatchHi[sel] & 0x00000000ffffffffULL);
}
void helper_mtc0_xcontext(CPUMIPSState *env, target_ulong arg1)
{
target_ulong mask = (1ULL << (env->SEGBITS - 7)) - 1;

42
target/mips/translate.c
View file

@ -2547,6 +2547,7 @@ typedef struct DisasContext {
bool nan2008;
bool abs2008;
bool saar;
bool mi;
} DisasContext;
#define DISAS_STOP DISAS_TARGET_0
@ -6783,6 +6784,25 @@ static void gen_mfhc0(DisasContext *ctx, TCGv arg, int reg, int sel)
goto cp0_unimplemented;
}
break;
case CP0_REGISTER_19:
switch (sel) {
case CP0_REG19__WATCHHI0:
case CP0_REG19__WATCHHI1:
case CP0_REG19__WATCHHI2:
case CP0_REG19__WATCHHI3:
case CP0_REG19__WATCHHI4:
case CP0_REG19__WATCHHI5:
case CP0_REG19__WATCHHI6:
case CP0_REG19__WATCHHI7:
/* upper 32 bits are only available when Config5MI != 0 */
CP0_CHECK(ctx->mi);
gen_mfhc0_load64(arg, offsetof(CPUMIPSState, CP0_WatchHi[sel]), 0);
register_name = "WatchHi";
break;
default:
goto cp0_unimplemented;
}
break;
case CP0_REGISTER_28:
switch (sel) {
case 0:
@ -6869,6 +6889,25 @@ static void gen_mthc0(DisasContext *ctx, TCGv arg, int reg, int sel)
goto cp0_unimplemented;
}
break;
case CP0_REGISTER_19:
switch (sel) {
case CP0_REG19__WATCHHI0:
case CP0_REG19__WATCHHI1:
case CP0_REG19__WATCHHI2:
case CP0_REG19__WATCHHI3:
case CP0_REG19__WATCHHI4:
case CP0_REG19__WATCHHI5:
case CP0_REG19__WATCHHI6:
case CP0_REG19__WATCHHI7:
/* upper 32 bits are only available when Config5MI != 0 */
CP0_CHECK(ctx->mi);
gen_helper_0e1i(mthc0_watchhi, arg, sel);
register_name = "WatchHi";
break;
default:
goto cp0_unimplemented;
}
break;
case CP0_REGISTER_28:
switch (sel) {
case 0:
@ -8922,7 +8961,7 @@ static void gen_dmfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
case CP0_REG19__WATCHHI6:
case CP0_REG19__WATCHHI7:
CP0_CHECK(ctx->CP0_Config1 & (1 << CP0C1_WR));
gen_helper_1e0i(mfc0_watchhi, arg, sel);
gen_helper_1e0i(dmfc0_watchhi, arg, sel);
register_name = "WatchHi";
break;
default:
@ -30727,6 +30766,7 @@ static void mips_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
ctx->mrp = (env->CP0_Config5 >> CP0C5_MRP) & 1;
ctx->nan2008 = (env->active_fpu.fcr31 >> FCR31_NAN2008) & 1;
ctx->abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1;
ctx->mi = (env->CP0_Config5 >> CP0C5_MI) & 1;
restore_cpu_state(env, ctx);
#ifdef CONFIG_USER_ONLY
ctx->mem_idx = MIPS_HFLAG_UM;