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([71.212.132.216]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f855ee8317sm80829285ad.145.2024.06.17.09.12.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Jun 2024 09:12:14 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com Subject: [PATCH 3/3] target/i386: Reorg push/pop within seg_helper.c Date: Mon, 17 Jun 2024 09:12:10 -0700 Message-Id: <20240617161210.4639-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240617161210.4639-1-richard.henderson@linaro.org> References: <20240617161210.4639-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Use a structure to contain the stack parameters, env, unwind return address, and mmu index. Rewrite the macros into functions. Signed-off-by: Richard Henderson --- target/i386/tcg/seg_helper.c | 465 +++++++++++++++++++---------------- 1 file changed, 253 insertions(+), 212 deletions(-) diff --git a/target/i386/tcg/seg_helper.c b/target/i386/tcg/seg_helper.c index 8884d82b33..d5bacd25f5 100644 --- a/target/i386/tcg/seg_helper.c +++ b/target/i386/tcg/seg_helper.c @@ -579,35 +579,47 @@ int exception_has_error_code(int intno) } while (0) #endif -/* XXX: add a is_user flag to have proper security support */ -#define PUSHW_RA(ssp, sp, sp_mask, val, ra) \ - { \ - sp -= 2; \ - cpu_stw_kernel_ra(env, (ssp) + (sp & (sp_mask)), (val), ra); \ - } +typedef struct PushPop +{ + CPUX86State *env; + uintptr_t ra; + target_ulong ss_base; + target_ulong sp; + target_ulong sp_mask; + int mmu_index; +} PushPop; -#define PUSHL_RA(ssp, sp, sp_mask, val, ra) \ - { \ - sp -= 4; \ - cpu_stl_kernel_ra(env, (ssp) + (sp & (sp_mask)), (val), ra); \ - } +static void pushw(PushPop *pp, uint16_t val) +{ + pp->sp -= 2; + cpu_stw_mmuidx_ra(pp->env, pp->ss_base + (pp->sp & pp->sp_mask), + val, pp->mmu_index, pp->ra); +} -#define POPW_RA(ssp, sp, sp_mask, val, ra) \ - { \ - val = cpu_lduw_kernel_ra(env, (ssp) + (sp & (sp_mask)), ra); \ - sp += 2; \ - } +static void pushl(PushPop *pp, uint32_t val) +{ + pp->sp -= 4; + cpu_stl_mmuidx_ra(pp->env, pp->ss_base + (pp->sp & pp->sp_mask), + val, pp->mmu_index, pp->ra); +} -#define POPL_RA(ssp, sp, sp_mask, val, ra) \ - { \ - val = (uint32_t)cpu_ldl_kernel_ra(env, (ssp) + (sp & (sp_mask)), ra); \ - sp += 4; \ - } +static uint16_t popw(PushPop *pp) +{ + uint16_t ret = cpu_lduw_mmuidx_ra(pp->env, + pp->ss_base + (pp->sp & pp->sp_mask), + pp->mmu_index, pp->ra); + pp->sp += 2; + return ret; +} -#define PUSHW(ssp, sp, sp_mask, val) PUSHW_RA(ssp, sp, sp_mask, val, 0) -#define PUSHL(ssp, sp, sp_mask, val) PUSHL_RA(ssp, sp, sp_mask, val, 0) -#define POPW(ssp, sp, sp_mask, val) POPW_RA(ssp, sp, sp_mask, val, 0) -#define POPL(ssp, sp, sp_mask, val) POPL_RA(ssp, sp, sp_mask, val, 0) +static uint32_t popl(PushPop *pp) +{ + uint32_t ret = cpu_ldl_mmuidx_ra(pp->env, + pp->ss_base + (pp->sp & pp->sp_mask), + pp->mmu_index, pp->ra); + pp->sp += 4; + return ret; +} /* protected mode interrupt */ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, @@ -615,12 +627,13 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, int is_hw) { SegmentCache *dt; - target_ulong ptr, ssp; + target_ulong ptr; int type, dpl, selector, ss_dpl, cpl; int has_error_code, new_stack, shift; - uint32_t e1, e2, offset, ss = 0, esp, ss_e1 = 0, ss_e2 = 0; - uint32_t old_eip, sp_mask, eflags; + uint32_t e1, e2, offset, ss = 0, ss_e1 = 0, ss_e2 = 0; + uint32_t old_eip, eflags; int vm86 = env->eflags & VM_MASK; + PushPop pp; bool set_rf; has_error_code = 0; @@ -662,6 +675,10 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, raise_exception_err(env, EXCP0D_GPF, intno * 8 + 2); } + pp.env = env; + pp.ra = 0; + pp.mmu_index = cpu_mmu_index_kernel(env); + if (type == 5) { /* task gate */ /* must do that check here to return the correct error code */ @@ -670,22 +687,20 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, } shift = switch_tss(env, intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip); if (has_error_code) { - uint32_t mask; - /* push the error code */ if (env->segs[R_SS].flags & DESC_B_MASK) { - mask = 0xffffffff; + pp.sp_mask = 0xffffffff; } else { - mask = 0xffff; + pp.sp_mask = 0xffff; } - esp = (env->regs[R_ESP] - (2 << shift)) & mask; - ssp = env->segs[R_SS].base + esp; + pp.sp = env->regs[R_ESP]; + pp.ss_base = env->segs[R_SS].base; if (shift) { - cpu_stl_kernel(env, ssp, error_code); + pushl(&pp, error_code); } else { - cpu_stw_kernel(env, ssp, error_code); + pushw(&pp, error_code); } - SET_ESP(esp, mask); + SET_ESP(pp.sp, pp.sp_mask); } return; } @@ -719,7 +734,9 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, } if (dpl < cpl) { /* to inner privilege */ + uint32_t esp; get_ss_esp_from_tss(env, &ss, &esp, dpl, 0); + pp.sp = esp; if ((ss & 0xfffc) == 0) { raise_exception_err(env, EXCP0A_TSS, ss & 0xfffc); } @@ -742,17 +759,17 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, raise_exception_err(env, EXCP0A_TSS, ss & 0xfffc); } new_stack = 1; - sp_mask = get_sp_mask(ss_e2); - ssp = get_seg_base(ss_e1, ss_e2); + pp.sp_mask = get_sp_mask(ss_e2); + pp.ss_base = get_seg_base(ss_e1, ss_e2); } else { /* to same privilege */ if (vm86) { raise_exception_err(env, EXCP0D_GPF, selector & 0xfffc); } new_stack = 0; - sp_mask = get_sp_mask(env->segs[R_SS].flags); - ssp = env->segs[R_SS].base; - esp = env->regs[R_ESP]; + pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); + pp.ss_base = env->segs[R_SS].base; + pp.sp = env->regs[R_ESP]; } shift = type >> 3; @@ -777,36 +794,36 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, if (shift == 1) { if (new_stack) { if (vm86) { - PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector); - PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector); - PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector); - PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector); + pushl(&pp, env->segs[R_GS].selector); + pushl(&pp, env->segs[R_FS].selector); + pushl(&pp, env->segs[R_DS].selector); + pushl(&pp, env->segs[R_ES].selector); } - PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector); - PUSHL(ssp, esp, sp_mask, env->regs[R_ESP]); + pushl(&pp, env->segs[R_SS].selector); + pushl(&pp, env->regs[R_ESP]); } - PUSHL(ssp, esp, sp_mask, eflags); - PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector); - PUSHL(ssp, esp, sp_mask, old_eip); + pushl(&pp, eflags); + pushl(&pp, env->segs[R_CS].selector); + pushl(&pp, old_eip); if (has_error_code) { - PUSHL(ssp, esp, sp_mask, error_code); + pushl(&pp, error_code); } } else { if (new_stack) { if (vm86) { - PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector); - PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector); - PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector); - PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector); + pushw(&pp, env->segs[R_GS].selector); + pushw(&pp, env->segs[R_FS].selector); + pushw(&pp, env->segs[R_DS].selector); + pushw(&pp, env->segs[R_ES].selector); } - PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector); - PUSHW(ssp, esp, sp_mask, env->regs[R_ESP]); + pushw(&pp, env->segs[R_SS].selector); + pushw(&pp, env->regs[R_ESP]); } - PUSHW(ssp, esp, sp_mask, eflags); - PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector); - PUSHW(ssp, esp, sp_mask, old_eip); + pushw(&pp, eflags); + pushw(&pp, env->segs[R_CS].selector); + pushw(&pp, old_eip); if (has_error_code) { - PUSHW(ssp, esp, sp_mask, error_code); + pushw(&pp, error_code); } } @@ -824,10 +841,10 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0); } ss = (ss & ~3) | dpl; - cpu_x86_load_seg_cache(env, R_SS, ss, - ssp, get_seg_limit(ss_e1, ss_e2), ss_e2); + cpu_x86_load_seg_cache(env, R_SS, ss, pp.ss_base, + get_seg_limit(ss_e1, ss_e2), ss_e2); } - SET_ESP(esp, sp_mask); + SET_ESP(pp.sp, pp.sp_mask); selector = (selector & ~3) | dpl; cpu_x86_load_seg_cache(env, R_CS, selector, @@ -839,20 +856,18 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int, #ifdef TARGET_X86_64 -#define PUSHQ_RA(sp, val, ra) \ - { \ - sp -= 8; \ - cpu_stq_kernel_ra(env, sp, (val), ra); \ - } +static void pushq(PushPop *pp, uint64_t val) +{ + pp->sp -= 8; + cpu_stq_mmuidx_ra(pp->env, pp->sp, val, pp->mmu_index, pp->ra); +} -#define POPQ_RA(sp, val, ra) \ - { \ - val = cpu_ldq_kernel_ra(env, sp, ra); \ - sp += 8; \ - } - -#define PUSHQ(sp, val) PUSHQ_RA(sp, val, 0) -#define POPQ(sp, val) POPQ_RA(sp, val, 0) +static uint64_t popq(PushPop *pp) +{ + uint64_t ret = cpu_ldq_mmuidx_ra(pp->env, pp->sp, pp->mmu_index, pp->ra); + pp->sp += 8; + return ret; +} static inline target_ulong get_rsp_from_tss(CPUX86State *env, int level) { @@ -895,8 +910,15 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int, int type, dpl, selector, cpl, ist; int has_error_code, new_stack; uint32_t e1, e2, e3, ss, eflags; - target_ulong old_eip, esp, offset; + target_ulong old_eip, offset; bool set_rf; + PushPop pp; + + pp.env = env; + pp.ra = 0; + pp.mmu_index = cpu_mmu_index_kernel(env); + pp.sp_mask = -1; + pp.ss_base = 0; has_error_code = 0; if (!is_int && !is_hw) { @@ -967,7 +989,7 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int, if (dpl < cpl || ist != 0) { /* to inner privilege */ new_stack = 1; - esp = get_rsp_from_tss(env, ist != 0 ? ist + 3 : dpl); + pp.sp = get_rsp_from_tss(env, ist != 0 ? ist + 3 : dpl); ss = 0; } else { /* to same privilege */ @@ -975,9 +997,9 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int, raise_exception_err(env, EXCP0D_GPF, selector & 0xfffc); } new_stack = 0; - esp = env->regs[R_ESP]; + pp.sp = env->regs[R_ESP]; } - esp &= ~0xfLL; /* align stack */ + pp.sp &= ~0xfLL; /* align stack */ /* See do_interrupt_protected. */ eflags = cpu_compute_eflags(env); @@ -985,13 +1007,13 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int, eflags |= RF_MASK; } - PUSHQ(esp, env->segs[R_SS].selector); - PUSHQ(esp, env->regs[R_ESP]); - PUSHQ(esp, eflags); - PUSHQ(esp, env->segs[R_CS].selector); - PUSHQ(esp, old_eip); + pushq(&pp, env->segs[R_SS].selector); + pushq(&pp, env->regs[R_ESP]); + pushq(&pp, eflags); + pushq(&pp, env->segs[R_CS].selector); + pushq(&pp, old_eip); if (has_error_code) { - PUSHQ(esp, error_code); + pushq(&pp, error_code); } /* interrupt gate clear IF mask */ @@ -1004,7 +1026,7 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int, ss = 0 | dpl; cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, dpl << DESC_DPL_SHIFT); } - env->regs[R_ESP] = esp; + env->regs[R_ESP] = pp.sp; selector = (selector & ~3) | dpl; cpu_x86_load_seg_cache(env, R_CS, selector, @@ -1076,10 +1098,11 @@ static void do_interrupt_real(CPUX86State *env, int intno, int is_int, int error_code, unsigned int next_eip) { SegmentCache *dt; - target_ulong ptr, ssp; + target_ulong ptr; int selector; - uint32_t offset, esp; + uint32_t offset; uint32_t old_cs, old_eip; + PushPop pp; /* real mode (simpler!) */ dt = &env->idt; @@ -1089,8 +1112,14 @@ static void do_interrupt_real(CPUX86State *env, int intno, int is_int, ptr = dt->base + intno * 4; offset = cpu_lduw_kernel(env, ptr); selector = cpu_lduw_kernel(env, ptr + 2); - esp = env->regs[R_ESP]; - ssp = env->segs[R_SS].base; + + pp.env = env; + pp.ra = 0; + pp.sp = env->regs[R_ESP]; + pp.sp_mask = 0xffff; + pp.ss_base = env->segs[R_SS].base; + pp.mmu_index = cpu_mmu_index_kernel(env); + if (is_int) { old_eip = next_eip; } else { @@ -1098,12 +1127,12 @@ static void do_interrupt_real(CPUX86State *env, int intno, int is_int, } old_cs = env->segs[R_CS].selector; /* XXX: use SS segment size? */ - PUSHW(ssp, esp, 0xffff, cpu_compute_eflags(env)); - PUSHW(ssp, esp, 0xffff, old_cs); - PUSHW(ssp, esp, 0xffff, old_eip); + pushw(&pp, cpu_compute_eflags(env)); + pushw(&pp, old_cs); + pushw(&pp, old_eip); /* update processor state */ - env->regs[R_ESP] = (env->regs[R_ESP] & ~0xffff) | (esp & 0xffff); + SET_ESP(pp.sp, pp.sp_mask); env->eip = offset; env->segs[R_CS].selector = selector; env->segs[R_CS].base = (selector << 4); @@ -1546,21 +1575,24 @@ void helper_ljmp_protected(CPUX86State *env, int new_cs, target_ulong new_eip, void helper_lcall_real(CPUX86State *env, uint32_t new_cs, uint32_t new_eip, int shift, uint32_t next_eip) { - uint32_t esp, esp_mask; - target_ulong ssp; + PushPop pp; + + pp.env = env; + pp.ra = GETPC(); + pp.sp = env->regs[R_ESP]; + pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); + pp.ss_base = env->segs[R_SS].base; + pp.mmu_index = cpu_mmu_index_kernel(env); - esp = env->regs[R_ESP]; - esp_mask = get_sp_mask(env->segs[R_SS].flags); - ssp = env->segs[R_SS].base; if (shift) { - PUSHL_RA(ssp, esp, esp_mask, env->segs[R_CS].selector, GETPC()); - PUSHL_RA(ssp, esp, esp_mask, next_eip, GETPC()); + pushl(&pp, env->segs[R_CS].selector); + pushl(&pp, next_eip); } else { - PUSHW_RA(ssp, esp, esp_mask, env->segs[R_CS].selector, GETPC()); - PUSHW_RA(ssp, esp, esp_mask, next_eip, GETPC()); + pushw(&pp, env->segs[R_CS].selector); + pushw(&pp, next_eip); } - SET_ESP(esp, esp_mask); + SET_ESP(pp.sp, pp.sp_mask); env->eip = new_eip; env->segs[R_CS].selector = new_cs; env->segs[R_CS].base = (new_cs << 4); @@ -1572,9 +1604,14 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, { int new_stack, i; uint32_t e1, e2, cpl, dpl, rpl, selector, param_count; - uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, type, ss_dpl, sp_mask; - uint32_t val, limit, old_sp_mask; - target_ulong ssp, old_ssp, offset, sp; + uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, type, ss_dpl; + uint32_t limit; + target_ulong offset; + PushPop pp; + + pp.env = env; + pp.ra = GETPC(); + pp.mmu_index = cpu_mmu_index_kernel(env); LOG_PCALL("lcall %04x:" TARGET_FMT_lx " s=%d\n", new_cs, new_eip, shift); LOG_PCALL_STATE(env_cpu(env)); @@ -1613,14 +1650,14 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, #ifdef TARGET_X86_64 /* XXX: check 16/32 bit cases in long mode */ if (shift == 2) { - target_ulong rsp; - /* 64 bit case */ - rsp = env->regs[R_ESP]; - PUSHQ_RA(rsp, env->segs[R_CS].selector, GETPC()); - PUSHQ_RA(rsp, next_eip, GETPC()); + pp.sp = env->regs[R_ESP]; + pp.sp_mask = -1; + pp.ss_base = 0; + pushq(&pp, env->segs[R_CS].selector); + pushq(&pp, next_eip); /* from this point, not restartable */ - env->regs[R_ESP] = rsp; + env->regs[R_ESP] = pp.sp; cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl, get_seg_base(e1, e2), get_seg_limit(e1, e2), e2); @@ -1628,15 +1665,15 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, } else #endif { - sp = env->regs[R_ESP]; - sp_mask = get_sp_mask(env->segs[R_SS].flags); - ssp = env->segs[R_SS].base; + pp.sp = env->regs[R_ESP]; + pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); + pp.ss_base = env->segs[R_SS].base; if (shift) { - PUSHL_RA(ssp, sp, sp_mask, env->segs[R_CS].selector, GETPC()); - PUSHL_RA(ssp, sp, sp_mask, next_eip, GETPC()); + pushl(&pp, env->segs[R_CS].selector); + pushl(&pp, next_eip); } else { - PUSHW_RA(ssp, sp, sp_mask, env->segs[R_CS].selector, GETPC()); - PUSHW_RA(ssp, sp, sp_mask, next_eip, GETPC()); + pushw(&pp, env->segs[R_CS].selector); + pushw(&pp, next_eip); } limit = get_seg_limit(e1, e2); @@ -1644,7 +1681,7 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, raise_exception_err_ra(env, EXCP0D_GPF, new_cs & 0xfffc, GETPC()); } /* from this point, not restartable */ - SET_ESP(sp, sp_mask); + SET_ESP(pp.sp, pp.sp_mask); cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl, get_seg_base(e1, e2), limit, e2); env->eip = new_eip; @@ -1739,13 +1776,13 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, /* to inner privilege */ #ifdef TARGET_X86_64 if (shift == 2) { - sp = get_rsp_from_tss(env, dpl); + pp.sp = get_rsp_from_tss(env, dpl); ss = dpl; /* SS = NULL selector with RPL = new CPL */ new_stack = 1; - sp_mask = 0; - ssp = 0; /* SS base is always zero in IA-32e mode */ + pp.sp_mask = -1; + pp.ss_base = 0; /* SS base is always zero in IA-32e mode */ LOG_PCALL("new ss:rsp=%04x:%016llx env->regs[R_ESP]=" - TARGET_FMT_lx "\n", ss, sp, env->regs[R_ESP]); + TARGET_FMT_lx "\n", ss, pp.sp, env->regs[R_ESP]); } else #endif { @@ -1754,7 +1791,7 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, LOG_PCALL("new ss:esp=%04x:%08x param_count=%d env->regs[R_ESP]=" TARGET_FMT_lx "\n", ss, sp32, param_count, env->regs[R_ESP]); - sp = sp32; + pp.sp = sp32; if ((ss & 0xfffc) == 0) { raise_exception_err_ra(env, EXCP0A_TSS, ss & 0xfffc, GETPC()); } @@ -1777,63 +1814,63 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, raise_exception_err_ra(env, EXCP0A_TSS, ss & 0xfffc, GETPC()); } - sp_mask = get_sp_mask(ss_e2); - ssp = get_seg_base(ss_e1, ss_e2); + pp.sp_mask = get_sp_mask(ss_e2); + pp.ss_base = get_seg_base(ss_e1, ss_e2); } /* push_size = ((param_count * 2) + 8) << shift; */ - old_sp_mask = get_sp_mask(env->segs[R_SS].flags); - old_ssp = env->segs[R_SS].base; #ifdef TARGET_X86_64 if (shift == 2) { /* XXX: verify if new stack address is canonical */ - PUSHQ_RA(sp, env->segs[R_SS].selector, GETPC()); - PUSHQ_RA(sp, env->regs[R_ESP], GETPC()); + pushq(&pp, env->segs[R_SS].selector); + pushq(&pp, env->regs[R_ESP]); /* parameters aren't supported for 64-bit call gates */ } else #endif - if (shift == 1) { - PUSHL_RA(ssp, sp, sp_mask, env->segs[R_SS].selector, GETPC()); - PUSHL_RA(ssp, sp, sp_mask, env->regs[R_ESP], GETPC()); - for (i = param_count - 1; i >= 0; i--) { - val = cpu_ldl_kernel_ra(env, old_ssp + - ((env->regs[R_ESP] + i * 4) & - old_sp_mask), GETPC()); - PUSHL_RA(ssp, sp, sp_mask, val, GETPC()); - } - } else { - PUSHW_RA(ssp, sp, sp_mask, env->segs[R_SS].selector, GETPC()); - PUSHW_RA(ssp, sp, sp_mask, env->regs[R_ESP], GETPC()); - for (i = param_count - 1; i >= 0; i--) { - val = cpu_lduw_kernel_ra(env, old_ssp + - ((env->regs[R_ESP] + i * 2) & - old_sp_mask), GETPC()); - PUSHW_RA(ssp, sp, sp_mask, val, GETPC()); + { + PushPop old_pp; + + old_pp = pp; + old_pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); + old_pp.ss_base = env->segs[R_SS].base; + + if (shift == 1) { + pushl(&pp, env->segs[R_SS].selector); + pushl(&pp, env->regs[R_ESP]); + for (i = param_count - 1; i >= 0; i--) { + pushl(&pp, popl(&old_pp)); + } + } else { + pushw(&pp, env->segs[R_SS].selector); + pushw(&pp, env->regs[R_ESP]); + for (i = param_count - 1; i >= 0; i--) { + pushw(&pp, popw(&old_pp)); + } } } new_stack = 1; } else { /* to same privilege */ - sp = env->regs[R_ESP]; - sp_mask = get_sp_mask(env->segs[R_SS].flags); - ssp = env->segs[R_SS].base; + pp.sp = env->regs[R_ESP]; + pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); + pp.ss_base = env->segs[R_SS].base; /* push_size = (4 << shift); */ new_stack = 0; } #ifdef TARGET_X86_64 if (shift == 2) { - PUSHQ_RA(sp, env->segs[R_CS].selector, GETPC()); - PUSHQ_RA(sp, next_eip, GETPC()); + pushq(&pp, env->segs[R_CS].selector); + pushq(&pp, next_eip); } else #endif if (shift == 1) { - PUSHL_RA(ssp, sp, sp_mask, env->segs[R_CS].selector, GETPC()); - PUSHL_RA(ssp, sp, sp_mask, next_eip, GETPC()); + pushl(&pp, env->segs[R_CS].selector); + pushl(&pp, next_eip); } else { - PUSHW_RA(ssp, sp, sp_mask, env->segs[R_CS].selector, GETPC()); - PUSHW_RA(ssp, sp, sp_mask, next_eip, GETPC()); + pushw(&pp, env->segs[R_CS].selector); + pushw(&pp, next_eip); } /* from this point, not restartable */ @@ -1847,7 +1884,7 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, { ss = (ss & ~3) | dpl; cpu_x86_load_seg_cache(env, R_SS, ss, - ssp, + pp.ss_base, get_seg_limit(ss_e1, ss_e2), ss_e2); } @@ -1858,7 +1895,7 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, get_seg_base(e1, e2), get_seg_limit(e1, e2), e2); - SET_ESP(sp, sp_mask); + SET_ESP(pp.sp, pp.sp_mask); env->eip = offset; } } @@ -1866,26 +1903,29 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip, /* real and vm86 mode iret */ void helper_iret_real(CPUX86State *env, int shift) { - uint32_t sp, new_cs, new_eip, new_eflags, sp_mask; - target_ulong ssp; + uint32_t new_cs, new_eip, new_eflags; int eflags_mask; + PushPop pp; + + pp.env = env; + pp.ra = GETPC(); + pp.mmu_index = cpu_mmu_index_kernel(env); + pp.sp_mask = 0xffff; /* XXXX: use SS segment size? */ + pp.sp = env->regs[R_ESP]; + pp.ss_base = env->segs[R_SS].base; - sp_mask = 0xffff; /* XXXX: use SS segment size? */ - sp = env->regs[R_ESP]; - ssp = env->segs[R_SS].base; if (shift == 1) { /* 32 bits */ - POPL_RA(ssp, sp, sp_mask, new_eip, GETPC()); - POPL_RA(ssp, sp, sp_mask, new_cs, GETPC()); - new_cs &= 0xffff; - POPL_RA(ssp, sp, sp_mask, new_eflags, GETPC()); + new_eip = popl(&pp); + new_cs = popl(&pp) & 0xffff; + new_eflags = popl(&pp); } else { /* 16 bits */ - POPW_RA(ssp, sp, sp_mask, new_eip, GETPC()); - POPW_RA(ssp, sp, sp_mask, new_cs, GETPC()); - POPW_RA(ssp, sp, sp_mask, new_eflags, GETPC()); + new_eip = popw(&pp); + new_cs = popw(&pp); + new_eflags = popw(&pp); } - env->regs[R_ESP] = (env->regs[R_ESP] & ~sp_mask) | (sp & sp_mask); + SET_ESP(pp.sp, pp.sp_mask); env->segs[R_CS].selector = new_cs; env->segs[R_CS].base = (new_cs << 4); env->eip = new_eip; @@ -1938,47 +1978,50 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, uint32_t new_es, new_ds, new_fs, new_gs; uint32_t e1, e2, ss_e1, ss_e2; int cpl, dpl, rpl, eflags_mask, iopl; - target_ulong ssp, sp, new_eip, new_esp, sp_mask; + target_ulong new_eip, new_esp; + PushPop pp; + + pp.env = env; + pp.ra = retaddr; + pp.mmu_index = cpu_mmu_index_kernel(env); #ifdef TARGET_X86_64 if (shift == 2) { - sp_mask = -1; + pp.sp_mask = -1; } else #endif { - sp_mask = get_sp_mask(env->segs[R_SS].flags); + pp.sp_mask = get_sp_mask(env->segs[R_SS].flags); } - sp = env->regs[R_ESP]; - ssp = env->segs[R_SS].base; + pp.sp = env->regs[R_ESP]; + pp.ss_base = env->segs[R_SS].base; new_eflags = 0; /* avoid warning */ #ifdef TARGET_X86_64 if (shift == 2) { - POPQ_RA(sp, new_eip, retaddr); - POPQ_RA(sp, new_cs, retaddr); - new_cs &= 0xffff; + new_eip = popq(&pp); + new_cs = popq(&pp) & 0xffff; if (is_iret) { - POPQ_RA(sp, new_eflags, retaddr); + new_eflags = popq(&pp); } } else #endif { if (shift == 1) { /* 32 bits */ - POPL_RA(ssp, sp, sp_mask, new_eip, retaddr); - POPL_RA(ssp, sp, sp_mask, new_cs, retaddr); - new_cs &= 0xffff; + new_eip = popl(&pp); + new_cs = popl(&pp) & 0xffff; if (is_iret) { - POPL_RA(ssp, sp, sp_mask, new_eflags, retaddr); + new_eflags = popl(&pp); if (new_eflags & VM_MASK) { goto return_to_vm86; } } } else { /* 16 bits */ - POPW_RA(ssp, sp, sp_mask, new_eip, retaddr); - POPW_RA(ssp, sp, sp_mask, new_cs, retaddr); + new_eip = popw(&pp); + new_cs = popw(&pp); if (is_iret) { - POPW_RA(ssp, sp, sp_mask, new_eflags, retaddr); + new_eflags = popw(&pp); } } } @@ -2014,7 +2057,7 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, raise_exception_err_ra(env, EXCP0B_NOSEG, new_cs & 0xfffc, retaddr); } - sp += addend; + pp.sp += addend; if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) || ((env->hflags & HF_CS64_MASK) && !is_iret))) { /* return to same privilege level */ @@ -2026,21 +2069,19 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, /* return to different privilege level */ #ifdef TARGET_X86_64 if (shift == 2) { - POPQ_RA(sp, new_esp, retaddr); - POPQ_RA(sp, new_ss, retaddr); - new_ss &= 0xffff; + new_esp = popq(&pp); + new_ss = popq(&pp) & 0xffff; } else #endif { if (shift == 1) { /* 32 bits */ - POPL_RA(ssp, sp, sp_mask, new_esp, retaddr); - POPL_RA(ssp, sp, sp_mask, new_ss, retaddr); - new_ss &= 0xffff; + new_esp = popl(&pp); + new_ss = popl(&pp) & 0xffff; } else { /* 16 bits */ - POPW_RA(ssp, sp, sp_mask, new_esp, retaddr); - POPW_RA(ssp, sp, sp_mask, new_ss, retaddr); + new_esp = popw(&pp); + new_ss = popw(&pp); } } LOG_PCALL("new ss:esp=%04x:" TARGET_FMT_lx "\n", @@ -2090,14 +2131,14 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, get_seg_base(e1, e2), get_seg_limit(e1, e2), e2); - sp = new_esp; + pp.sp = new_esp; #ifdef TARGET_X86_64 if (env->hflags & HF_CS64_MASK) { - sp_mask = -1; + pp.sp_mask = -1; } else #endif { - sp_mask = get_sp_mask(ss_e2); + pp.sp_mask = get_sp_mask(ss_e2); } /* validate data segments */ @@ -2106,9 +2147,9 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, validate_seg(env, R_FS, rpl); validate_seg(env, R_GS, rpl); - sp += addend; + pp.sp += addend; } - SET_ESP(sp, sp_mask); + SET_ESP(pp.sp, pp.sp_mask); env->eip = new_eip; if (is_iret) { /* NOTE: 'cpl' is the _old_ CPL */ @@ -2128,12 +2169,12 @@ static inline void helper_ret_protected(CPUX86State *env, int shift, return; return_to_vm86: - POPL_RA(ssp, sp, sp_mask, new_esp, retaddr); - POPL_RA(ssp, sp, sp_mask, new_ss, retaddr); - POPL_RA(ssp, sp, sp_mask, new_es, retaddr); - POPL_RA(ssp, sp, sp_mask, new_ds, retaddr); - POPL_RA(ssp, sp, sp_mask, new_fs, retaddr); - POPL_RA(ssp, sp, sp_mask, new_gs, retaddr); + new_esp = popl(&pp); + new_ss = popl(&pp); + new_es = popl(&pp); + new_ds = popl(&pp); + new_fs = popl(&pp); + new_gs = popl(&pp); /* modify processor state */ cpu_load_eflags(env, new_eflags, TF_MASK | AC_MASK | ID_MASK |