From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38010) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZDV3X-0003Bi-SO for qemu-devel@nongnu.org; Fri, 10 Jul 2015 05:57:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZDV3U-0007Qa-Is for qemu-devel@nongnu.org; Fri, 10 Jul 2015 05:57:19 -0400 Received: from mail.ispras.ru ([83.149.199.45]:43693) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZDV3T-0007QS-Sc for qemu-devel@nongnu.org; Fri, 10 Jul 2015 05:57:16 -0400 From: Pavel Dovgalyuk Date: Fri, 10 Jul 2015 12:57:19 +0300 Message-ID: <20150710095719.13280.4426.stgit@PASHA-ISP> In-Reply-To: <20150710095643.13280.88767.stgit@PASHA-ISP> References: <20150710095643.13280.88767.stgit@PASHA-ISP> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH v7 06/11] target-i386: exception handling for FPU instructions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: rth7680@gmail.com, agraf@suse.de, pavel.dovgaluk@ispras.ru, pbonzini@redhat.com, leon.alrae@imgtec.com, aurelien@aurel32.net This patch fixes exception handling for FPU instructions and removes obsolete PC update from translate.c. Reviewed-by: Aurelien Jarno Reviewed-by: Richard Henderson Signed-off-by: Pavel Dovgalyuk --- target-i386/fpu_helper.c | 164 +++++++++++++++++++++++++++------------------- target-i386/translate.c | 24 ------- 2 files changed, 95 insertions(+), 93 deletions(-) diff --git a/target-i386/fpu_helper.c b/target-i386/fpu_helper.c index 30d34d5..80c955d 100644 --- a/target-i386/fpu_helper.c +++ b/target-i386/fpu_helper.c @@ -68,22 +68,24 @@ static inline void fpop(CPUX86State *env) env->fpstt = (env->fpstt + 1) & 7; } -static inline floatx80 helper_fldt(CPUX86State *env, target_ulong ptr) +static inline floatx80 helper_fldt(CPUX86State *env, target_ulong ptr, + uintptr_t retaddr) { CPU_LDoubleU temp; - temp.l.lower = cpu_ldq_data(env, ptr); - temp.l.upper = cpu_lduw_data(env, ptr + 8); + temp.l.lower = cpu_ldq_data_ra(env, ptr, retaddr); + temp.l.upper = cpu_lduw_data_ra(env, ptr + 8, retaddr); return temp.d; } -static inline void helper_fstt(CPUX86State *env, floatx80 f, target_ulong ptr) +static inline void helper_fstt(CPUX86State *env, floatx80 f, target_ulong ptr, + uintptr_t retaddr) { CPU_LDoubleU temp; temp.d = f; - cpu_stq_data(env, ptr, temp.l.lower); - cpu_stw_data(env, ptr + 8, temp.l.upper); + cpu_stq_data_ra(env, ptr, temp.l.lower, retaddr); + cpu_stw_data_ra(env, ptr + 8, temp.l.upper, retaddr); } /* x87 FPU helpers */ @@ -126,10 +128,10 @@ static inline floatx80 helper_fdiv(CPUX86State *env, floatx80 a, floatx80 b) return floatx80_div(a, b, &env->fp_status); } -static void fpu_raise_exception(CPUX86State *env) +static void fpu_raise_exception(CPUX86State *env, uintptr_t retaddr) { if (env->cr[0] & CR0_NE_MASK) { - raise_exception(env, EXCP10_COPR); + raise_exception_ra(env, EXCP10_COPR, retaddr); } #if !defined(CONFIG_USER_ONLY) else { @@ -314,14 +316,14 @@ void helper_fldt_ST0(CPUX86State *env, target_ulong ptr) int new_fpstt; new_fpstt = (env->fpstt - 1) & 7; - env->fpregs[new_fpstt].d = helper_fldt(env, ptr); + env->fpregs[new_fpstt].d = helper_fldt(env, ptr, GETPC()); env->fpstt = new_fpstt; env->fptags[new_fpstt] = 0; /* validate stack entry */ } void helper_fstt_ST0(CPUX86State *env, target_ulong ptr) { - helper_fstt(env, ST0, ptr); + helper_fstt(env, ST0, ptr, GETPC()); } void helper_fpush(CPUX86State *env) @@ -604,7 +606,7 @@ void helper_fclex(CPUX86State *env) void helper_fwait(CPUX86State *env) { if (env->fpus & FPUS_SE) { - fpu_raise_exception(env); + fpu_raise_exception(env, GETPC()); } } @@ -634,11 +636,11 @@ void helper_fbld_ST0(CPUX86State *env, target_ulong ptr) val = 0; for (i = 8; i >= 0; i--) { - v = cpu_ldub_data(env, ptr + i); + v = cpu_ldub_data_ra(env, ptr + i, GETPC()); val = (val * 100) + ((v >> 4) * 10) + (v & 0xf); } tmp = int64_to_floatx80(val, &env->fp_status); - if (cpu_ldub_data(env, ptr + 9) & 0x80) { + if (cpu_ldub_data_ra(env, ptr + 9, GETPC()) & 0x80) { tmp = floatx80_chs(tmp); } fpush(env); @@ -655,10 +657,10 @@ void helper_fbst_ST0(CPUX86State *env, target_ulong ptr) mem_ref = ptr; mem_end = mem_ref + 9; if (val < 0) { - cpu_stb_data(env, mem_end, 0x80); + cpu_stb_data_ra(env, mem_end, 0x80, GETPC()); val = -val; } else { - cpu_stb_data(env, mem_end, 0x00); + cpu_stb_data_ra(env, mem_end, 0x00, GETPC()); } while (mem_ref < mem_end) { if (val == 0) { @@ -667,10 +669,10 @@ void helper_fbst_ST0(CPUX86State *env, target_ulong ptr) v = val % 100; val = val / 100; v = ((v / 10) << 4) | (v % 10); - cpu_stb_data(env, mem_ref++, v); + cpu_stb_data_ra(env, mem_ref++, v, GETPC()); } while (mem_ref < mem_end) { - cpu_stb_data(env, mem_ref++, 0); + cpu_stb_data_ra(env, mem_ref++, 0, GETPC()); } } @@ -978,7 +980,8 @@ void helper_fxam_ST0(CPUX86State *env) } } -void helper_fstenv(CPUX86State *env, target_ulong ptr, int data32) +static void do_fstenv(CPUX86State *env, target_ulong ptr, int data32, + uintptr_t retaddr) { int fpus, fptag, exp, i; uint64_t mant; @@ -1006,37 +1009,43 @@ void helper_fstenv(CPUX86State *env, target_ulong ptr, int data32) } if (data32) { /* 32 bit */ - cpu_stl_data(env, ptr, env->fpuc); - cpu_stl_data(env, ptr + 4, fpus); - cpu_stl_data(env, ptr + 8, fptag); - cpu_stl_data(env, ptr + 12, 0); /* fpip */ - cpu_stl_data(env, ptr + 16, 0); /* fpcs */ - cpu_stl_data(env, ptr + 20, 0); /* fpoo */ - cpu_stl_data(env, ptr + 24, 0); /* fpos */ + cpu_stl_data_ra(env, ptr, env->fpuc, retaddr); + cpu_stl_data_ra(env, ptr + 4, fpus, retaddr); + cpu_stl_data_ra(env, ptr + 8, fptag, retaddr); + cpu_stl_data_ra(env, ptr + 12, 0, retaddr); /* fpip */ + cpu_stl_data_ra(env, ptr + 16, 0, retaddr); /* fpcs */ + cpu_stl_data_ra(env, ptr + 20, 0, retaddr); /* fpoo */ + cpu_stl_data_ra(env, ptr + 24, 0, retaddr); /* fpos */ } else { /* 16 bit */ - cpu_stw_data(env, ptr, env->fpuc); - cpu_stw_data(env, ptr + 2, fpus); - cpu_stw_data(env, ptr + 4, fptag); - cpu_stw_data(env, ptr + 6, 0); - cpu_stw_data(env, ptr + 8, 0); - cpu_stw_data(env, ptr + 10, 0); - cpu_stw_data(env, ptr + 12, 0); + cpu_stw_data_ra(env, ptr, env->fpuc, retaddr); + cpu_stw_data_ra(env, ptr + 2, fpus, retaddr); + cpu_stw_data_ra(env, ptr + 4, fptag, retaddr); + cpu_stw_data_ra(env, ptr + 6, 0, retaddr); + cpu_stw_data_ra(env, ptr + 8, 0, retaddr); + cpu_stw_data_ra(env, ptr + 10, 0, retaddr); + cpu_stw_data_ra(env, ptr + 12, 0, retaddr); } } -void helper_fldenv(CPUX86State *env, target_ulong ptr, int data32) +void helper_fstenv(CPUX86State *env, target_ulong ptr, int data32) +{ + do_fstenv(env, ptr, data32, GETPC()); +} + +static void do_fldenv(CPUX86State *env, target_ulong ptr, int data32, + uintptr_t retaddr) { int i, fpus, fptag; if (data32) { - cpu_set_fpuc(env, cpu_lduw_data(env, ptr)); - fpus = cpu_lduw_data(env, ptr + 4); - fptag = cpu_lduw_data(env, ptr + 8); + cpu_set_fpuc(env, cpu_lduw_data_ra(env, ptr, retaddr)); + fpus = cpu_lduw_data_ra(env, ptr + 4, retaddr); + fptag = cpu_lduw_data_ra(env, ptr + 8, retaddr); } else { - cpu_set_fpuc(env, cpu_lduw_data(env, ptr)); - fpus = cpu_lduw_data(env, ptr + 2); - fptag = cpu_lduw_data(env, ptr + 4); + cpu_set_fpuc(env, cpu_lduw_data_ra(env, ptr, retaddr)); + fpus = cpu_lduw_data_ra(env, ptr + 2, retaddr); + fptag = cpu_lduw_data_ra(env, ptr + 4, retaddr); } env->fpstt = (fpus >> 11) & 7; env->fpus = fpus & ~0x3800; @@ -1046,17 +1055,22 @@ void helper_fldenv(CPUX86State *env, target_ulong ptr, int data32) } } +void helper_fldenv(CPUX86State *env, target_ulong ptr, int data32) +{ + do_fldenv(env, ptr, data32, GETPC()); +} + void helper_fsave(CPUX86State *env, target_ulong ptr, int data32) { floatx80 tmp; int i; - helper_fstenv(env, ptr, data32); + do_fstenv(env, ptr, data32, GETPC()); ptr += (14 << data32); for (i = 0; i < 8; i++) { tmp = ST(i); - helper_fstt(env, tmp, ptr); + helper_fstt(env, tmp, ptr, GETPC()); ptr += 10; } @@ -1079,11 +1093,11 @@ void helper_frstor(CPUX86State *env, target_ulong ptr, int data32) floatx80 tmp; int i; - helper_fldenv(env, ptr, data32); + do_fldenv(env, ptr, data32, GETPC()); ptr += (14 << data32); for (i = 0; i < 8; i++) { - tmp = helper_fldt(env, ptr); + tmp = helper_fldt(env, ptr, GETPC()); ST(i) = tmp; ptr += 10; } @@ -1101,7 +1115,8 @@ void cpu_x86_frstor(CPUX86State *env, target_ulong ptr, int data32) } #endif -void helper_fxsave(CPUX86State *env, target_ulong ptr, int data64) +static void do_fxsave(CPUX86State *env, target_ulong ptr, int data64, + uintptr_t retaddr) { int fpus, fptag, i, nb_xmm_regs; floatx80 tmp; @@ -1109,7 +1124,7 @@ void helper_fxsave(CPUX86State *env, target_ulong ptr, int data64) /* The operand must be 16 byte aligned */ if (ptr & 0xf) { - raise_exception(env, EXCP0D_GPF); + raise_exception_ra(env, EXCP0D_GPF, retaddr); } fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; @@ -1117,33 +1132,33 @@ void helper_fxsave(CPUX86State *env, target_ulong ptr, int data64) for (i = 0; i < 8; i++) { fptag |= (env->fptags[i] << i); } - cpu_stw_data(env, ptr, env->fpuc); - cpu_stw_data(env, ptr + 2, fpus); - cpu_stw_data(env, ptr + 4, fptag ^ 0xff); + cpu_stw_data_ra(env, ptr, env->fpuc, retaddr); + cpu_stw_data_ra(env, ptr + 2, fpus, retaddr); + cpu_stw_data_ra(env, ptr + 4, fptag ^ 0xff, retaddr); #ifdef TARGET_X86_64 if (data64) { - cpu_stq_data(env, ptr + 0x08, 0); /* rip */ - cpu_stq_data(env, ptr + 0x10, 0); /* rdp */ + cpu_stq_data_ra(env, ptr + 0x08, 0, retaddr); /* rip */ + cpu_stq_data_ra(env, ptr + 0x10, 0, retaddr); /* rdp */ } else #endif { - cpu_stl_data(env, ptr + 0x08, 0); /* eip */ - cpu_stl_data(env, ptr + 0x0c, 0); /* sel */ - cpu_stl_data(env, ptr + 0x10, 0); /* dp */ - cpu_stl_data(env, ptr + 0x14, 0); /* sel */ + cpu_stl_data_ra(env, ptr + 0x08, 0, retaddr); /* eip */ + cpu_stl_data_ra(env, ptr + 0x0c, 0, retaddr); /* sel */ + cpu_stl_data_ra(env, ptr + 0x10, 0, retaddr); /* dp */ + cpu_stl_data_ra(env, ptr + 0x14, 0, retaddr); /* sel */ } addr = ptr + 0x20; for (i = 0; i < 8; i++) { tmp = ST(i); - helper_fstt(env, tmp, addr); + helper_fstt(env, tmp, addr, retaddr); addr += 16; } if (env->cr[4] & CR4_OSFXSR_MASK) { /* XXX: finish it */ - cpu_stl_data(env, ptr + 0x18, env->mxcsr); /* mxcsr */ - cpu_stl_data(env, ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */ + cpu_stl_data_ra(env, ptr + 0x18, env->mxcsr, retaddr); /* mxcsr */ + cpu_stl_data_ra(env, ptr + 0x1c, 0x0000ffff, retaddr); /* mxcsr_mask */ if (env->hflags & HF_CS64_MASK) { nb_xmm_regs = 16; } else { @@ -1155,15 +1170,21 @@ void helper_fxsave(CPUX86State *env, target_ulong ptr, int data64) || (env->hflags & HF_CPL_MASK) || !(env->hflags & HF_LMA_MASK)) { for (i = 0; i < nb_xmm_regs; i++) { - cpu_stq_data(env, addr, env->xmm_regs[i].XMM_Q(0)); - cpu_stq_data(env, addr + 8, env->xmm_regs[i].XMM_Q(1)); + cpu_stq_data_ra(env, addr, env->xmm_regs[i].XMM_Q(0), retaddr); + cpu_stq_data_ra(env, addr + 8, env->xmm_regs[i].XMM_Q(1), retaddr); addr += 16; } } } } -void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64) +void helper_fxsave(CPUX86State *env, target_ulong ptr, int data64) +{ + do_fxsave(env, ptr, data64, GETPC()); +} + +static void do_fxrstor(CPUX86State *env, target_ulong ptr, int data64, + uintptr_t retaddr) { int i, fpus, fptag, nb_xmm_regs; floatx80 tmp; @@ -1171,12 +1192,12 @@ void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64) /* The operand must be 16 byte aligned */ if (ptr & 0xf) { - raise_exception(env, EXCP0D_GPF); + raise_exception_ra(env, EXCP0D_GPF, retaddr); } - cpu_set_fpuc(env, cpu_lduw_data(env, ptr)); - fpus = cpu_lduw_data(env, ptr + 2); - fptag = cpu_lduw_data(env, ptr + 4); + cpu_set_fpuc(env, cpu_lduw_data_ra(env, ptr, retaddr)); + fpus = cpu_lduw_data_ra(env, ptr + 2, retaddr); + fptag = cpu_lduw_data_ra(env, ptr + 4, retaddr); env->fpstt = (fpus >> 11) & 7; env->fpus = fpus & ~0x3800; fptag ^= 0xff; @@ -1186,15 +1207,15 @@ void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64) addr = ptr + 0x20; for (i = 0; i < 8; i++) { - tmp = helper_fldt(env, addr); + tmp = helper_fldt(env, addr, retaddr); ST(i) = tmp; addr += 16; } if (env->cr[4] & CR4_OSFXSR_MASK) { /* XXX: finish it */ - cpu_set_mxcsr(env, cpu_ldl_data(env, ptr + 0x18)); - /* cpu_ldl_data(env, ptr + 0x1c); */ + cpu_set_mxcsr(env, cpu_ldl_data_ra(env, ptr + 0x18, retaddr)); + /* cpu_ldl_data_ra(env, ptr + 0x1c, retaddr); */ if (env->hflags & HF_CS64_MASK) { nb_xmm_regs = 16; } else { @@ -1206,14 +1227,19 @@ void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64) || (env->hflags & HF_CPL_MASK) || !(env->hflags & HF_LMA_MASK)) { for (i = 0; i < nb_xmm_regs; i++) { - env->xmm_regs[i].XMM_Q(0) = cpu_ldq_data(env, addr); - env->xmm_regs[i].XMM_Q(1) = cpu_ldq_data(env, addr + 8); + env->xmm_regs[i].XMM_Q(0) = cpu_ldq_data_ra(env, addr, retaddr); + env->xmm_regs[i].XMM_Q(1) = cpu_ldq_data_ra(env, addr + 8, retaddr); addr += 16; } } } } +void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64) +{ + do_fxrstor(env, ptr, data64, GETPC()); +} + void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, floatx80 f) { CPU_LDoubleU temp; diff --git a/target-i386/translate.c b/target-i386/translate.c index 7a1bdee..24d8189 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -5837,8 +5837,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } break; case 0x0c: /* fldenv mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fldenv(cpu_env, cpu_A0, tcg_const_i32(dflag - 1)); break; case 0x0d: /* fldcw mem */ @@ -5847,8 +5845,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_helper_fldcw(cpu_env, cpu_tmp2_i32); break; case 0x0e: /* fnstenv mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fstenv(cpu_env, cpu_A0, tcg_const_i32(dflag - 1)); break; case 0x0f: /* fnstcw mem */ @@ -5857,24 +5853,16 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, s->mem_index, MO_LEUW); break; case 0x1d: /* fldt mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fldt_ST0(cpu_env, cpu_A0); break; case 0x1f: /* fstpt mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fstt_ST0(cpu_env, cpu_A0); gen_helper_fpop(cpu_env); break; case 0x2c: /* frstor mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_frstor(cpu_env, cpu_A0, tcg_const_i32(dflag - 1)); break; case 0x2e: /* fnsave mem */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fsave(cpu_env, cpu_A0, tcg_const_i32(dflag - 1)); break; case 0x2f: /* fnstsw mem */ @@ -5883,13 +5871,9 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, s->mem_index, MO_LEUW); break; case 0x3c: /* fbld */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fbld_ST0(cpu_env, cpu_A0); break; case 0x3e: /* fbstp */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fbst_ST0(cpu_env, cpu_A0); gen_helper_fpop(cpu_env); break; @@ -5924,8 +5908,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, switch(rm) { case 0: /* fnop */ /* check exceptions (FreeBSD FPU probe) */ - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fwait(cpu_env); break; default: @@ -6895,8 +6877,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, (HF_MP_MASK | HF_TS_MASK)) { gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); } else { - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fwait(cpu_env); } break; @@ -7726,8 +7706,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, break; } gen_lea_modrm(env, s, modrm); - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fxsave(cpu_env, cpu_A0, tcg_const_i32(dflag == MO_64)); break; case 1: /* fxrstor */ @@ -7739,8 +7717,6 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, break; } gen_lea_modrm(env, s, modrm); - gen_update_cc_op(s); - gen_jmp_im(pc_start - s->cs_base); gen_helper_fxrstor(cpu_env, cpu_A0, tcg_const_i32(dflag == MO_64)); break; case 2: /* ldmxcsr */