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[Qemu-devel] [RFC PATCH v1 04/22] target/i386: Simplify gen_exception ar
|
From: |
Jan Bobek |
|
Subject: |
[Qemu-devel] [RFC PATCH v1 04/22] target/i386: Simplify gen_exception arguments |
|
Date: |
Wed, 31 Jul 2019 13:56:44 -0400 |
From: Richard Henderson <address@hidden>
We can compute cur_eip from values present within DisasContext.
Signed-off-by: Richard Henderson <address@hidden>
---
target/i386/translate.c | 89 ++++++++++++++++++++---------------------
1 file changed, 44 insertions(+), 45 deletions(-)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 692261f73f..9e22eca2dc 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -1272,10 +1272,10 @@ static void gen_helper_fp_arith_STN_ST0(int op, int
opreg)
}
}
-static void gen_exception(DisasContext *s, int trapno, target_ulong cur_eip)
+static void gen_exception(DisasContext *s, int trapno)
{
gen_update_cc_op(s);
- gen_jmp_im(s, cur_eip);
+ gen_jmp_im(s, s->pc_start - s->cs_base);
gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno));
s->base.is_jmp = DISAS_NORETURN;
}
@@ -1284,7 +1284,7 @@ static void gen_exception(DisasContext *s, int trapno,
target_ulong cur_eip)
the instruction is known, but it isn't allowed in the current cpu mode. */
static void gen_illegal_opcode(DisasContext *s)
{
- gen_exception(s, EXCP06_ILLOP, s->pc_start - s->cs_base);
+ gen_exception(s, EXCP06_ILLOP);
}
/* if d == OR_TMP0, it means memory operand (address in A0) */
@@ -3040,8 +3040,7 @@ static const struct SSEOpHelper_eppi sse_op_table7[256] =
{
[0xdf] = AESNI_OP(aeskeygenassist),
};
-static void gen_sse(CPUX86State *env, DisasContext *s, int b,
- target_ulong pc_start)
+static void gen_sse(CPUX86State *env, DisasContext *s, int b)
{
int b1, op1_offset, op2_offset, is_xmm, val;
int modrm, mod, rm, reg;
@@ -3076,7 +3075,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s,
int b,
}
/* simple MMX/SSE operation */
if (s->flags & HF_TS_MASK) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
return;
}
if (s->flags & HF_EM_MASK) {
@@ -4515,7 +4514,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
s->vex_l = 0;
s->vex_v = 0;
if (sigsetjmp(s->jmpbuf, 0) != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
return s->pc;
}
@@ -5854,7 +5853,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
if (s->flags & (HF_EM_MASK | HF_TS_MASK)) {
/* if CR0.EM or CR0.TS are set, generate an FPU exception */
/* XXX: what to do if illegal op ? */
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
break;
}
modrm = x86_ldub_code(env, s);
@@ -6572,7 +6571,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
set_cc_op(s, CC_OP_EFLAGS);
} else if (s->vm86) {
if (s->iopl != 3) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_helper_iret_real(cpu_env, tcg_const_i32(s->dflag - 1));
set_cc_op(s, CC_OP_EFLAGS);
@@ -6694,7 +6693,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x9c: /* pushf */
gen_svm_check_intercept(s, pc_start, SVM_EXIT_PUSHF);
if (s->vm86 && s->iopl != 3) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_update_cc_op(s);
gen_helper_read_eflags(s->T0, cpu_env);
@@ -6704,7 +6703,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x9d: /* popf */
gen_svm_check_intercept(s, pc_start, SVM_EXIT_POPF);
if (s->vm86 && s->iopl != 3) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
ot = gen_pop_T0(s);
if (s->cpl == 0) {
@@ -7021,7 +7020,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
val = x86_ldub_code(env, s);
if (val == 0) {
- gen_exception(s, EXCP00_DIVZ, pc_start - s->cs_base);
+ gen_exception(s, EXCP00_DIVZ);
} else {
gen_helper_aam(cpu_env, tcg_const_i32(val));
set_cc_op(s, CC_OP_LOGICB);
@@ -7055,7 +7054,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x9b: /* fwait */
if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
(HF_MP_MASK | HF_TS_MASK)) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
} else {
gen_helper_fwait(cpu_env);
}
@@ -7066,7 +7065,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0xcd: /* int N */
val = x86_ldub_code(env, s);
if (s->vm86 && s->iopl != 3) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_interrupt(s, val, pc_start - s->cs_base, s->pc - s->cs_base);
}
@@ -7089,13 +7088,13 @@ static target_ulong disas_insn(DisasContext *s,
CPUState *cpu)
if (s->cpl <= s->iopl) {
gen_helper_cli(cpu_env);
} else {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
}
} else {
if (s->iopl == 3) {
gen_helper_cli(cpu_env);
} else {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
}
}
break;
@@ -7106,7 +7105,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
gen_jmp_im(s, s->pc - s->cs_base);
gen_eob_inhibit_irq(s, true);
} else {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
}
break;
case 0x62: /* bound */
@@ -7198,7 +7197,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x130: /* wrmsr */
case 0x132: /* rdmsr */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_update_cc_op(s);
gen_jmp_im(s, pc_start - s->cs_base);
@@ -7231,7 +7230,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
goto illegal_op;
if (!s->pe) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_helper_sysenter(cpu_env);
gen_eob(s);
@@ -7242,7 +7241,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
goto illegal_op;
if (!s->pe) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_helper_sysexit(cpu_env, tcg_const_i32(s->dflag - 1));
gen_eob(s);
@@ -7261,7 +7260,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
break;
case 0x107: /* sysret */
if (!s->pe) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_helper_sysret(cpu_env, tcg_const_i32(s->dflag - 1));
/* condition codes are modified only in long mode */
@@ -7283,7 +7282,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
break;
case 0xf4: /* hlt */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_update_cc_op(s);
gen_jmp_im(s, pc_start - s->cs_base);
@@ -7309,7 +7308,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
if (!s->pe || s->vm86)
goto illegal_op;
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_WRITE);
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
@@ -7330,7 +7329,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
if (!s->pe || s->vm86)
goto illegal_op;
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_WRITE);
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
@@ -7446,7 +7445,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
@@ -7463,7 +7462,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7488,7 +7487,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7501,7 +7500,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7516,7 +7515,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7530,7 +7529,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7554,7 +7553,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7564,7 +7563,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
CASE_MODRM_MEM_OP(2): /* lgdt */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_svm_check_intercept(s, pc_start, SVM_EXIT_GDTR_WRITE);
@@ -7581,7 +7580,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
CASE_MODRM_MEM_OP(3): /* lidt */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_svm_check_intercept(s, pc_start, SVM_EXIT_IDTR_WRITE);
@@ -7626,7 +7625,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
break;
CASE_MODRM_OP(6): /* lmsw */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
@@ -7638,7 +7637,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
CASE_MODRM_MEM_OP(7): /* invlpg */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
break;
}
gen_update_cc_op(s);
@@ -7653,7 +7652,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
#ifdef TARGET_X86_64
if (CODE64(s)) {
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
tcg_gen_mov_tl(s->T0, cpu_seg_base[R_GS]);
tcg_gen_ld_tl(cpu_seg_base[R_GS], cpu_env,
@@ -7690,7 +7689,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x108: /* invd */
case 0x109: /* wbinvd */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_svm_check_intercept(s, pc_start, (b & 2) ? SVM_EXIT_INVD :
SVM_EXIT_WBINVD);
/* nothing to do */
@@ -8014,7 +8013,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x120: /* mov reg, crN */
case 0x122: /* mov crN, reg */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
modrm = x86_ldub_code(env, s);
/* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
@@ -8071,7 +8070,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x121: /* mov reg, drN */
case 0x123: /* mov drN, reg */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
modrm = x86_ldub_code(env, s);
/* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
@@ -8105,7 +8104,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
break;
case 0x106: /* clts */
if (s->cpl != 0) {
- gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+ gen_exception(s, EXCP0D_GPF);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
gen_helper_clts(cpu_env);
@@ -8136,7 +8135,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
break;
}
gen_lea_modrm(env, s, modrm);
@@ -8149,7 +8148,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
break;
}
gen_lea_modrm(env, s, modrm);
@@ -8161,7 +8160,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->flags & HF_TS_MASK) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
break;
}
gen_lea_modrm(env, s, modrm);
@@ -8174,7 +8173,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
goto illegal_op;
}
if (s->flags & HF_TS_MASK) {
- gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
+ gen_exception(s, EXCP07_PREX);
break;
}
gen_lea_modrm(env, s, modrm);
@@ -8377,7 +8376,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState
*cpu)
case 0x1c2:
case 0x1c4 ... 0x1c6:
case 0x1d0 ... 0x1fe:
- gen_sse(env, s, b, pc_start);
+ gen_sse(env, s, b);
break;
default:
goto unknown_op;
--
2.20.1
- [Qemu-devel] [RFC PATCH v1 00/22] reimplement (some) x86 vector instructions using tcg-gvec, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 02/22] target/i386: Push rex_w into DisasContext, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 01/22] target/i386: Push rex_r into DisasContext, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 05/22] target/i386: introduce gen_ld_modrm_* helpers, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 04/22] target/i386: Simplify gen_exception arguments,
Jan Bobek <=
- [Qemu-devel] [RFC PATCH v1 07/22] target/i386: add vector register file alignment constraints, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 09/22] target/i386: reimplement (V)POR, (V)ORPS, (V)ORPD, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 06/22] target/i386: introduce gen_gvec_ld_modrm_* helpers, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 08/22] target/i386: reimplement (V)PAND, (V)ANDPS, (V)ANDPD, Jan Bobek, 2019/07/31
- [Qemu-devel] [RFC PATCH v1 10/22] target/i386: reimplement (V)PXOR, (V)XORPS, (V)XORPD, Jan Bobek, 2019/07/31