diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2022-10-01 07:09:22 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-10-11 09:36:01 +0200 |
| commit | faf9ea5fa5558782b4031be16145758caf5e20e5 (patch) | |
| tree | f88b471181cd6c89048d8b16dca220c040b7b4bc /target/i386 | |
| parent | 122e6d7b4a51755eeabab15570a152c8379f652d (diff) | |
target/i386: Introduce DISAS_JUMP
Drop the unused dest argument to gen_jr().
Remove most of the calls to gen_jr, and use DISAS_JUMP.
Remove some unused loads of eip for lcall and ljmp.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221001140935.465607-14-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386')
| -rw-r--r-- | target/i386/tcg/translate.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index c8ef9f0356..7db6f617a1 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -135,6 +135,7 @@ typedef struct DisasContext { #define DISAS_EOB_ONLY DISAS_TARGET_0 #define DISAS_EOB_NEXT DISAS_TARGET_1 #define DISAS_EOB_INHIBIT_IRQ DISAS_TARGET_2 +#define DISAS_JUMP DISAS_TARGET_3 /* The environment in which user-only runs is constrained. */ #ifdef CONFIG_USER_ONLY @@ -222,7 +223,7 @@ STUB_HELPER(wrmsr, TCGv_env env) #endif static void gen_eob(DisasContext *s); -static void gen_jr(DisasContext *s, TCGv dest); +static void gen_jr(DisasContext *s); static void gen_jmp(DisasContext *s, target_ulong eip); static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num); static void gen_op(DisasContext *s1, int op, MemOp ot, int d); @@ -2385,7 +2386,7 @@ static void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip) } else { /* jump to another page */ gen_jmp_im(s, eip); - gen_jr(s, s->tmp0); + gen_jr(s); } } @@ -2754,7 +2755,7 @@ static void gen_eob(DisasContext *s) } /* Jump to register */ -static void gen_jr(DisasContext *s, TCGv dest) +static void gen_jr(DisasContext *s) { do_gen_eob_worker(s, false, false, true); } @@ -5328,7 +5329,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) gen_push_v(s, s->T1); gen_op_jmp_v(s->T0); gen_bnd_jmp(s); - gen_jr(s, s->T0); + s->base.is_jmp = DISAS_JUMP; break; case 3: /* lcall Ev */ if (mod == 3) { @@ -5349,8 +5350,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) tcg_const_i32(dflag - 1), tcg_const_i32(s->pc - s->cs_base)); } - tcg_gen_ld_tl(s->tmp4, cpu_env, offsetof(CPUX86State, eip)); - gen_jr(s, s->tmp4); + s->base.is_jmp = DISAS_JUMP; break; case 4: /* jmp Ev */ if (dflag == MO_16) { @@ -5358,7 +5358,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) } gen_op_jmp_v(s->T0); gen_bnd_jmp(s); - gen_jr(s, s->T0); + s->base.is_jmp = DISAS_JUMP; break; case 5: /* ljmp Ev */ if (mod == 3) { @@ -5376,8 +5376,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) gen_op_movl_seg_T0_vm(s, R_CS); gen_op_jmp_v(s->T1); } - tcg_gen_ld_tl(s->tmp4, cpu_env, offsetof(CPUX86State, eip)); - gen_jr(s, s->tmp4); + s->base.is_jmp = DISAS_JUMP; break; case 6: /* push Ev */ gen_push_v(s, s->T0); @@ -6808,7 +6807,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) /* Note that gen_pop_T0 uses a zero-extending load. */ gen_op_jmp_v(s->T0); gen_bnd_jmp(s); - gen_jr(s, s->T0); + s->base.is_jmp = DISAS_JUMP; break; case 0xc3: /* ret */ ot = gen_pop_T0(s); @@ -6816,7 +6815,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu) /* Note that gen_pop_T0 uses a zero-extending load. */ gen_op_jmp_v(s->T0); gen_bnd_jmp(s); - gen_jr(s, s->T0); + s->base.is_jmp = DISAS_JUMP; break; case 0xca: /* lret im */ val = x86_ldsw_code(env, s); @@ -8846,6 +8845,9 @@ static void i386_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) gen_update_eip_cur(dc); gen_eob_inhibit_irq(dc, true); break; + case DISAS_JUMP: + gen_jr(dc); + break; default: g_assert_not_reached(); } |