diff options
| author | Leon Alrae <leon.alrae@imgtec.com> | 2014-07-07 11:23:59 +0100 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2014-11-03 11:48:34 +0000 |
| commit | 7207c7f9d74816c32783a394d8072d1f978157ac (patch) | |
| tree | 05c22755fc89eceee9d23533de96bc06d9abdd97 /target-mips/translate.c | |
| parent | 2fb58b73746e2f99ac85e82160277b18b18279be (diff) | |
target-mips: update PageGrain and m{t,f}c0 EntryLo{0,1}
PageGrain needs rw bitmask which differs between MIPS architectures.
In pre-R6 if RIXI is supported, PageGrain.XIE and PageGrain.RIE are writeable,
whereas in R6 they are read-only 1.
On MIPS64 mtc0 instruction left shifts bits 31:30 for MIPS32 backward
compatiblity, therefore there are separate mtc0 and dmtc0 helpers.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Diffstat (limited to 'target-mips/translate.c')
| -rw-r--r-- | target-mips/translate.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 167f9bc545..e8933a9dd4 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -1171,6 +1171,7 @@ typedef struct DisasContext { target_ulong btarget; bool ulri; int kscrexist; + bool rxi; } DisasContext; enum { @@ -4659,6 +4660,15 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel) switch (sel) { case 0: tcg_gen_ld_tl(arg, cpu_env, offsetof(CPUMIPSState, CP0_EntryLo0)); +#if defined(TARGET_MIPS64) + if (ctx->rxi) { + TCGv tmp = tcg_temp_new(); + tcg_gen_andi_tl(tmp, arg, (3ull << 62)); + tcg_gen_shri_tl(tmp, tmp, 32); + tcg_gen_or_tl(arg, arg, tmp); + tcg_temp_free(tmp); + } +#endif tcg_gen_ext32s_tl(arg, arg); rn = "EntryLo0"; break; @@ -4705,6 +4715,15 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel) switch (sel) { case 0: tcg_gen_ld_tl(arg, cpu_env, offsetof(CPUMIPSState, CP0_EntryLo1)); +#if defined(TARGET_MIPS64) + if (ctx->rxi) { + TCGv tmp = tcg_temp_new(); + tcg_gen_andi_tl(tmp, arg, (3ull << 62)); + tcg_gen_shri_tl(tmp, tmp, 32); + tcg_gen_or_tl(arg, arg, tmp); + tcg_temp_free(tmp); + } +#endif tcg_gen_ext32s_tl(arg, arg); rn = "EntryLo1"; break; @@ -6480,7 +6499,7 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel) case 2: switch (sel) { case 0: - gen_helper_mtc0_entrylo0(cpu_env, arg); + gen_helper_dmtc0_entrylo0(cpu_env, arg); rn = "EntryLo0"; break; case 1: @@ -6525,7 +6544,7 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel) case 3: switch (sel) { case 0: - gen_helper_mtc0_entrylo1(cpu_env, arg); + gen_helper_dmtc0_entrylo1(cpu_env, arg); rn = "EntryLo1"; break; default: @@ -17458,6 +17477,7 @@ gen_intermediate_code_internal(MIPSCPU *cpu, TranslationBlock *tb, ctx.tb = tb; ctx.bstate = BS_NONE; ctx.kscrexist = (env->CP0_Config4 >> CP0C4_KScrExist) & 0xff; + ctx.rxi = (env->CP0_Config3 >> CP0C3_RXI) & 1; /* Restore delay slot state from the tb context. */ ctx.hflags = (uint32_t)tb->flags; /* FIXME: maybe use 64 bits here? */ ctx.ulri = env->CP0_Config3 & (1 << CP0C3_ULRI); @@ -17840,6 +17860,8 @@ void cpu_state_reset(CPUMIPSState *env) env->CP0_SRSConf3 = env->cpu_model->CP0_SRSConf3; env->CP0_SRSConf4_rw_bitmask = env->cpu_model->CP0_SRSConf4_rw_bitmask; env->CP0_SRSConf4 = env->cpu_model->CP0_SRSConf4; + env->CP0_PageGrain_rw_bitmask = env->cpu_model->CP0_PageGrain_rw_bitmask; + env->CP0_PageGrain = env->cpu_model->CP0_PageGrain; env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0; env->insn_flags = env->cpu_model->insn_flags; |