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target/i386: move cpu_cc_srcT to DisasContext

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Backports commit 93a3e108eb6a9bb781ab7db6e92d91528e482030 from qemu
This commit is contained in:
Emilio G. Cota 2018-10-04 00:53:58 -04:00 committed by Lioncash
parent ea64a4629f
commit 30c66bcca3
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 24 additions and 25 deletions
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48
qemu/target/i386/translate.c
View file

@ -113,6 +113,10 @@ typedef struct DisasContext {
int cpuid_ext3_features;
int cpuid_7_0_ebx_features;
int cpuid_xsave_features;
/* TCG local temps */
TCGv cc_srcT;
sigjmp_buf jmpbuf;
struct uc_struct *uc;
@ -283,7 +287,6 @@ static void set_cc_op(DisasContext *s, CCOp op)
TCGv cpu_cc_dst = tcg_ctx->cpu_cc_dst;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_cc_src2 = tcg_ctx->cpu_cc_src2;
TCGv cpu_cc_srcT = tcg_ctx->cpu_cc_srcT;
if (s->cc_op == op) {
return;
@ -301,7 +304,7 @@ static void set_cc_op(DisasContext *s, CCOp op)
tcg_gen_discard_tl(tcg_ctx, cpu_cc_src2);
}
if (dead & USES_CC_SRCT) {
tcg_gen_discard_tl(tcg_ctx, cpu_cc_srcT);
tcg_gen_discard_tl(tcg_ctx, s->cc_srcT);
}
if (op == CC_OP_DYNAMIC) {
@ -798,16 +801,17 @@ static inline void gen_op_testl_T0_T1_cc(TCGContext *s)
tcg_gen_and_tl(s, cpu_cc_dst, cpu_T0, cpu_T1);
}
static void gen_op_update_neg_cc(TCGContext *s)
static void gen_op_update_neg_cc(DisasContext *s)
{
TCGv cpu_cc_dst = s->cpu_cc_dst;
TCGv cpu_cc_src = s->cpu_cc_src;
TCGv cpu_cc_srcT = s->cpu_cc_srcT;
TCGv cpu_T0 = s->cpu_T0;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
tcg_gen_mov_tl(s, cpu_cc_dst, cpu_T0);
tcg_gen_neg_tl(s, cpu_cc_src, cpu_T0);
tcg_gen_movi_tl(s, cpu_cc_srcT, 0);
TCGv cpu_cc_dst = tcg_ctx->cpu_cc_dst;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_T0 = tcg_ctx->cpu_T0;
tcg_gen_mov_tl(tcg_ctx, cpu_cc_dst, cpu_T0);
tcg_gen_neg_tl(tcg_ctx, cpu_cc_src, cpu_T0);
tcg_gen_movi_tl(tcg_ctx, s->cc_srcT, 0);
}
/* compute all eflags to cc_src */
@ -889,7 +893,6 @@ static CCPrepare gen_prepare_eflags_c(DisasContext *s, TCGv reg)
TCGv cpu_cc_dst = tcg_ctx->cpu_cc_dst;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_cc_src2 = tcg_ctx->cpu_cc_src2;
TCGv cpu_cc_srcT = tcg_ctx->cpu_cc_srcT;
TCGv cpu_tmp0 = tcg_ctx->cpu_tmp0;
switch (s->cc_op) {
@ -899,7 +902,7 @@ static CCPrepare gen_prepare_eflags_c(DisasContext *s, TCGv reg)
t1 = gen_ext_tl(tcg_ctx, cpu_tmp0, cpu_cc_src, size, false);
/* If no temporary was used, be careful not to alias t1 and t0. */
t0 = t1 == cpu_cc_src ? cpu_tmp0 : reg;
tcg_gen_mov_tl(tcg_ctx, t0, cpu_cc_srcT);
tcg_gen_mov_tl(tcg_ctx, t0, s->cc_srcT);
gen_extu(tcg_ctx, size, t0);
goto add_sub;
@ -1049,7 +1052,6 @@ static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
TCGv t0;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_cc_srcT = tcg_ctx->cpu_cc_srcT;
TCGv cpu_tmp0 = tcg_ctx->cpu_tmp0;
TCGv cpu_tmp4 = tcg_ctx->cpu_tmp4;
@ -1062,7 +1064,7 @@ static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
size = s->cc_op - CC_OP_SUBB;
switch (jcc_op) {
case JCC_BE:
tcg_gen_mov_tl(tcg_ctx, cpu_tmp4, cpu_cc_srcT);
tcg_gen_mov_tl(tcg_ctx, cpu_tmp4, s->cc_srcT);
gen_extu(tcg_ctx, size, cpu_tmp4);
t0 = gen_ext_tl(tcg_ctx, cpu_tmp0, cpu_cc_src, size, false);
cc = ccprepare_make(TCG_COND_LEU, cpu_tmp4, t0, 0, -1, true, false);
@ -1074,7 +1076,7 @@ static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
case JCC_LE:
cond = TCG_COND_LE;
fast_jcc_l:
tcg_gen_mov_tl(tcg_ctx, cpu_tmp4, cpu_cc_srcT);
tcg_gen_mov_tl(tcg_ctx, cpu_tmp4, s->cc_srcT);
gen_exts(tcg_ctx, size, cpu_tmp4);
t0 = gen_ext_tl(tcg_ctx, cpu_tmp0, cpu_cc_src, size, true);
cc = ccprepare_make(cond, cpu_tmp4, t0, 0, -1, true, false);
@ -1448,7 +1450,6 @@ static void gen_op(DisasContext *s, int op, TCGMemOp ot, int d)
TCGv cpu_A0 = tcg_ctx->cpu_A0;
TCGv cpu_cc_dst = tcg_ctx->cpu_cc_dst;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_cc_srcT = tcg_ctx->cpu_cc_srcT;
TCGv cpu_tmp4 = tcg_ctx->cpu_tmp4;
TCGv cpu_T0 = tcg_ctx->cpu_T0;
TCGv cpu_T1 = tcg_ctx->cpu_T1;
@ -1500,11 +1501,11 @@ static void gen_op(DisasContext *s, int op, TCGMemOp ot, int d)
case OP_SUBL:
if (s->prefix & PREFIX_LOCK) {
tcg_gen_neg_tl(tcg_ctx, cpu_T0, cpu_T1);
tcg_gen_atomic_fetch_add_tl(tcg_ctx, cpu_cc_srcT, cpu_A0, cpu_T0,
tcg_gen_atomic_fetch_add_tl(tcg_ctx, s->cc_srcT, cpu_A0, cpu_T0,
s->mem_index, ot | MO_LE);
tcg_gen_sub_tl(tcg_ctx, cpu_T0, cpu_cc_srcT, cpu_T1);
tcg_gen_sub_tl(tcg_ctx, cpu_T0, s->cc_srcT, cpu_T1);
} else {
tcg_gen_mov_tl(tcg_ctx, cpu_cc_srcT, cpu_T0);
tcg_gen_mov_tl(tcg_ctx, s->cc_srcT, cpu_T0);
tcg_gen_sub_tl(tcg_ctx, cpu_T0, cpu_T0, cpu_T1);
gen_op_st_rm_T0_A0(s, ot, d);
}
@ -1547,7 +1548,7 @@ static void gen_op(DisasContext *s, int op, TCGMemOp ot, int d)
break;
case OP_CMPL:
tcg_gen_mov_tl(tcg_ctx, cpu_cc_src, cpu_T1);
tcg_gen_mov_tl(tcg_ctx, cpu_cc_srcT, cpu_T0);
tcg_gen_mov_tl(tcg_ctx, s->cc_srcT, cpu_T0);
tcg_gen_sub_tl(tcg_ctx, cpu_cc_dst, cpu_T0, cpu_T1);
set_cc_op(s, CC_OP_SUBB + ot);
break;
@ -5046,7 +5047,6 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
TCGv cpu_A0 = tcg_ctx->cpu_A0;
TCGv cpu_cc_dst = tcg_ctx->cpu_cc_dst;
TCGv cpu_cc_src = tcg_ctx->cpu_cc_src;
TCGv cpu_cc_srcT = tcg_ctx->cpu_cc_srcT;
TCGv cpu_tmp0 = tcg_ctx->cpu_tmp0;
TCGv cpu_tmp4 = tcg_ctx->cpu_tmp4;
TCGv cpu_T0 = tcg_ctx->cpu_T0;
@ -5488,7 +5488,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_op_mov_reg_v(tcg_ctx, ot, rm, cpu_T0);
}
}
gen_op_update_neg_cc(tcg_ctx);
gen_op_update_neg_cc(s);
set_cc_op(s, CC_OP_SUBB + ot);
break;
case 4: /* mul */
@ -5947,7 +5947,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
}
}
tcg_gen_mov_tl(tcg_ctx, cpu_cc_src, oldv);
tcg_gen_mov_tl(tcg_ctx, cpu_cc_srcT, cmpv);
tcg_gen_mov_tl(tcg_ctx, s->cc_srcT, cmpv);
tcg_gen_sub_tl(tcg_ctx, cpu_cc_dst, cmpv, oldv);
set_cc_op(s, CC_OP_SUBB + ot);
tcg_temp_free(tcg_ctx, oldv);
@ -9228,7 +9228,7 @@ static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
tcg_ctx->cpu_ptr0 = tcg_temp_new_ptr(tcg_ctx);
tcg_ctx->cpu_ptr1 = tcg_temp_new_ptr(tcg_ctx);
tcg_ctx->cpu_cc_srcT = tcg_temp_local_new(tcg_ctx);
dc->cc_srcT = tcg_temp_local_new(tcg_ctx);
// done with initializing TCG variables
env->uc->init_tcg = true;

1
qemu/tcg/tcg.h
View file

@ -826,7 +826,6 @@ struct TCGContext {
TCGv cpu_cc_dst;
TCGv cpu_cc_src;
TCGv cpu_cc_src2;
TCGv cpu_cc_srcT;
/* qemu/target-i386/translate.c: local temps */
TCGv cpu_T0;