1cd71c089SLaurent Vivier /* 2cd71c089SLaurent Vivier * qemu user cpu loop 3cd71c089SLaurent Vivier * 4cd71c089SLaurent Vivier * Copyright (c) 2003-2008 Fabrice Bellard 5cd71c089SLaurent Vivier * 6cd71c089SLaurent Vivier * This program is free software; you can redistribute it and/or modify 7cd71c089SLaurent Vivier * it under the terms of the GNU General Public License as published by 8cd71c089SLaurent Vivier * the Free Software Foundation; either version 2 of the License, or 9cd71c089SLaurent Vivier * (at your option) any later version. 10cd71c089SLaurent Vivier * 11cd71c089SLaurent Vivier * This program is distributed in the hope that it will be useful, 12cd71c089SLaurent Vivier * but WITHOUT ANY WARRANTY; without even the implied warranty of 13cd71c089SLaurent Vivier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14cd71c089SLaurent Vivier * GNU General Public License for more details. 15cd71c089SLaurent Vivier * 16cd71c089SLaurent Vivier * You should have received a copy of the GNU General Public License 17cd71c089SLaurent Vivier * along with this program; if not, see <http://www.gnu.org/licenses/>. 18cd71c089SLaurent Vivier */ 19cd71c089SLaurent Vivier 20cd71c089SLaurent Vivier #include "qemu/osdep.h" 21cd71c089SLaurent Vivier #include "qemu.h" 22cdf06ce5SPhilippe Mathieu-Daudé #include "qemu/timer.h" 233b249d26SPeter Maydell #include "user-internals.h" 24cd71c089SLaurent Vivier #include "cpu_loop-common.h" 252113aed6SPeter Maydell #include "signal-common.h" 265423e6d3SPeter Maydell #include "user-mmap.h" 27cd71c089SLaurent Vivier 283f8258c1SLaurent Vivier /***********************************************************/ 293f8258c1SLaurent Vivier /* CPUX86 core interface */ 303f8258c1SLaurent Vivier 313f8258c1SLaurent Vivier uint64_t cpu_get_tsc(CPUX86State *env) 323f8258c1SLaurent Vivier { 333f8258c1SLaurent Vivier return cpu_get_host_ticks(); 343f8258c1SLaurent Vivier } 353f8258c1SLaurent Vivier 363f8258c1SLaurent Vivier static void write_dt(void *ptr, unsigned long addr, unsigned long limit, 373f8258c1SLaurent Vivier int flags) 383f8258c1SLaurent Vivier { 393f8258c1SLaurent Vivier unsigned int e1, e2; 403f8258c1SLaurent Vivier uint32_t *p; 413f8258c1SLaurent Vivier e1 = (addr << 16) | (limit & 0xffff); 423f8258c1SLaurent Vivier e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); 433f8258c1SLaurent Vivier e2 |= flags; 443f8258c1SLaurent Vivier p = ptr; 453f8258c1SLaurent Vivier p[0] = tswap32(e1); 463f8258c1SLaurent Vivier p[1] = tswap32(e2); 473f8258c1SLaurent Vivier } 483f8258c1SLaurent Vivier 493f8258c1SLaurent Vivier static uint64_t *idt_table; 503f8258c1SLaurent Vivier #ifdef TARGET_X86_64 513f8258c1SLaurent Vivier static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, 523f8258c1SLaurent Vivier uint64_t addr, unsigned int sel) 533f8258c1SLaurent Vivier { 543f8258c1SLaurent Vivier uint32_t *p, e1, e2; 553f8258c1SLaurent Vivier e1 = (addr & 0xffff) | (sel << 16); 563f8258c1SLaurent Vivier e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 573f8258c1SLaurent Vivier p = ptr; 583f8258c1SLaurent Vivier p[0] = tswap32(e1); 593f8258c1SLaurent Vivier p[1] = tswap32(e2); 603f8258c1SLaurent Vivier p[2] = tswap32(addr >> 32); 613f8258c1SLaurent Vivier p[3] = 0; 623f8258c1SLaurent Vivier } 633f8258c1SLaurent Vivier /* only dpl matters as we do only user space emulation */ 643f8258c1SLaurent Vivier static void set_idt(int n, unsigned int dpl) 653f8258c1SLaurent Vivier { 663f8258c1SLaurent Vivier set_gate64(idt_table + n * 2, 0, dpl, 0, 0); 673f8258c1SLaurent Vivier } 683f8258c1SLaurent Vivier #else 693f8258c1SLaurent Vivier static void set_gate(void *ptr, unsigned int type, unsigned int dpl, 703f8258c1SLaurent Vivier uint32_t addr, unsigned int sel) 713f8258c1SLaurent Vivier { 723f8258c1SLaurent Vivier uint32_t *p, e1, e2; 733f8258c1SLaurent Vivier e1 = (addr & 0xffff) | (sel << 16); 743f8258c1SLaurent Vivier e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 753f8258c1SLaurent Vivier p = ptr; 763f8258c1SLaurent Vivier p[0] = tswap32(e1); 773f8258c1SLaurent Vivier p[1] = tswap32(e2); 783f8258c1SLaurent Vivier } 793f8258c1SLaurent Vivier 803f8258c1SLaurent Vivier /* only dpl matters as we do only user space emulation */ 813f8258c1SLaurent Vivier static void set_idt(int n, unsigned int dpl) 823f8258c1SLaurent Vivier { 833f8258c1SLaurent Vivier set_gate(idt_table + n, 0, dpl, 0, 0); 843f8258c1SLaurent Vivier } 853f8258c1SLaurent Vivier #endif 863f8258c1SLaurent Vivier 87b26491b4SRichard Henderson #ifdef TARGET_X86_64 88b26491b4SRichard Henderson static bool write_ok_or_segv(CPUX86State *env, abi_ptr addr, size_t len) 89b26491b4SRichard Henderson { 90b26491b4SRichard Henderson /* 91b26491b4SRichard Henderson * For all the vsyscalls, NULL means "don't write anything" not 92b26491b4SRichard Henderson * "write it at address 0". 93b26491b4SRichard Henderson */ 94c7169b02SRichard Henderson if (addr == 0 || access_ok(env_cpu(env), VERIFY_WRITE, addr, len)) { 95b26491b4SRichard Henderson return true; 96b26491b4SRichard Henderson } 97b26491b4SRichard Henderson 98b26491b4SRichard Henderson env->error_code = PG_ERROR_W_MASK | PG_ERROR_U_MASK; 99d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR, addr); 100b26491b4SRichard Henderson return false; 101b26491b4SRichard Henderson } 102b26491b4SRichard Henderson 103b26491b4SRichard Henderson /* 104b26491b4SRichard Henderson * Since v3.1, the kernel traps and emulates the vsyscall page. 105b26491b4SRichard Henderson * Entry points other than the official generate SIGSEGV. 106b26491b4SRichard Henderson */ 107b26491b4SRichard Henderson static void emulate_vsyscall(CPUX86State *env) 108b26491b4SRichard Henderson { 109b26491b4SRichard Henderson int syscall; 110b26491b4SRichard Henderson abi_ulong ret; 111b26491b4SRichard Henderson uint64_t caller; 112b26491b4SRichard Henderson 113b26491b4SRichard Henderson /* 114b26491b4SRichard Henderson * Validate the entry point. We have already validated the page 115b26491b4SRichard Henderson * during translation to get here; now verify the offset. 116b26491b4SRichard Henderson */ 117b26491b4SRichard Henderson switch (env->eip & ~TARGET_PAGE_MASK) { 118b26491b4SRichard Henderson case 0x000: 119b26491b4SRichard Henderson syscall = TARGET_NR_gettimeofday; 120b26491b4SRichard Henderson break; 121b26491b4SRichard Henderson case 0x400: 122b26491b4SRichard Henderson syscall = TARGET_NR_time; 123b26491b4SRichard Henderson break; 124b26491b4SRichard Henderson case 0x800: 125b26491b4SRichard Henderson syscall = TARGET_NR_getcpu; 126b26491b4SRichard Henderson break; 127b26491b4SRichard Henderson default: 128b26491b4SRichard Henderson goto sigsegv; 129b26491b4SRichard Henderson } 130b26491b4SRichard Henderson 131b26491b4SRichard Henderson /* 132b26491b4SRichard Henderson * Validate the return address. 133b26491b4SRichard Henderson * Note that the kernel treats this the same as an invalid entry point. 134b26491b4SRichard Henderson */ 135b26491b4SRichard Henderson if (get_user_u64(caller, env->regs[R_ESP])) { 136b26491b4SRichard Henderson goto sigsegv; 137b26491b4SRichard Henderson } 138b26491b4SRichard Henderson 139b26491b4SRichard Henderson /* 1407a21bee2SDaniel P. Berrangé * Validate the pointer arguments. 141b26491b4SRichard Henderson */ 142b26491b4SRichard Henderson switch (syscall) { 143b26491b4SRichard Henderson case TARGET_NR_gettimeofday: 144b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], 145b26491b4SRichard Henderson sizeof(struct target_timeval)) || 146b26491b4SRichard Henderson !write_ok_or_segv(env, env->regs[R_ESI], 147b26491b4SRichard Henderson sizeof(struct target_timezone))) { 148b26491b4SRichard Henderson return; 149b26491b4SRichard Henderson } 150b26491b4SRichard Henderson break; 151b26491b4SRichard Henderson case TARGET_NR_time: 152b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], sizeof(abi_long))) { 153b26491b4SRichard Henderson return; 154b26491b4SRichard Henderson } 155b26491b4SRichard Henderson break; 156b26491b4SRichard Henderson case TARGET_NR_getcpu: 157b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], sizeof(uint32_t)) || 158b26491b4SRichard Henderson !write_ok_or_segv(env, env->regs[R_ESI], sizeof(uint32_t))) { 159b26491b4SRichard Henderson return; 160b26491b4SRichard Henderson } 161b26491b4SRichard Henderson break; 162b26491b4SRichard Henderson default: 163b26491b4SRichard Henderson g_assert_not_reached(); 164b26491b4SRichard Henderson } 165b26491b4SRichard Henderson 166b26491b4SRichard Henderson /* 167b26491b4SRichard Henderson * Perform the syscall. None of the vsyscalls should need restarting. 168b26491b4SRichard Henderson */ 169b26491b4SRichard Henderson ret = do_syscall(env, syscall, env->regs[R_EDI], env->regs[R_ESI], 170b26491b4SRichard Henderson env->regs[R_EDX], env->regs[10], env->regs[8], 171b26491b4SRichard Henderson env->regs[9], 0, 0); 172af254a27SRichard Henderson g_assert(ret != -QEMU_ERESTARTSYS); 17357a0c938SRichard Henderson g_assert(ret != -QEMU_ESIGRETURN); 174b26491b4SRichard Henderson if (ret == -TARGET_EFAULT) { 175b26491b4SRichard Henderson goto sigsegv; 176b26491b4SRichard Henderson } 177b26491b4SRichard Henderson env->regs[R_EAX] = ret; 178b26491b4SRichard Henderson 179b26491b4SRichard Henderson /* Emulate a ret instruction to leave the vsyscall page. */ 180b26491b4SRichard Henderson env->eip = caller; 181b26491b4SRichard Henderson env->regs[R_ESP] += 8; 182b26491b4SRichard Henderson return; 183b26491b4SRichard Henderson 184b26491b4SRichard Henderson sigsegv: 185d08d6d66SRichard Henderson force_sig(TARGET_SIGSEGV); 186b26491b4SRichard Henderson } 187b26491b4SRichard Henderson #endif 188b26491b4SRichard Henderson 1891ade5b2fSRichard Henderson static bool maybe_handle_vm86_trap(CPUX86State *env, int trapnr) 1901ade5b2fSRichard Henderson { 1911ade5b2fSRichard Henderson #ifndef TARGET_X86_64 1921ade5b2fSRichard Henderson if (env->eflags & VM_MASK) { 1931ade5b2fSRichard Henderson handle_vm86_trap(env, trapnr); 1941ade5b2fSRichard Henderson return true; 1951ade5b2fSRichard Henderson } 1961ade5b2fSRichard Henderson #endif 1971ade5b2fSRichard Henderson return false; 1981ade5b2fSRichard Henderson } 1991ade5b2fSRichard Henderson 2003f8258c1SLaurent Vivier void cpu_loop(CPUX86State *env) 2013f8258c1SLaurent Vivier { 2026aa9e42fSRichard Henderson CPUState *cs = env_cpu(env); 2033f8258c1SLaurent Vivier int trapnr; 2043f8258c1SLaurent Vivier abi_ulong ret; 2053f8258c1SLaurent Vivier 2063f8258c1SLaurent Vivier for(;;) { 2073f8258c1SLaurent Vivier cpu_exec_start(cs); 2083f8258c1SLaurent Vivier trapnr = cpu_exec(cs); 2093f8258c1SLaurent Vivier cpu_exec_end(cs); 2103f8258c1SLaurent Vivier process_queued_cpu_work(cs); 2113f8258c1SLaurent Vivier 2123f8258c1SLaurent Vivier switch(trapnr) { 2133f8258c1SLaurent Vivier case 0x80: 2143f8258c1SLaurent Vivier /* linux syscall from int $0x80 */ 2153f8258c1SLaurent Vivier ret = do_syscall(env, 2163f8258c1SLaurent Vivier env->regs[R_EAX], 2173f8258c1SLaurent Vivier env->regs[R_EBX], 2183f8258c1SLaurent Vivier env->regs[R_ECX], 2193f8258c1SLaurent Vivier env->regs[R_EDX], 2203f8258c1SLaurent Vivier env->regs[R_ESI], 2213f8258c1SLaurent Vivier env->regs[R_EDI], 2223f8258c1SLaurent Vivier env->regs[R_EBP], 2233f8258c1SLaurent Vivier 0, 0); 224af254a27SRichard Henderson if (ret == -QEMU_ERESTARTSYS) { 2253f8258c1SLaurent Vivier env->eip -= 2; 22657a0c938SRichard Henderson } else if (ret != -QEMU_ESIGRETURN) { 2273f8258c1SLaurent Vivier env->regs[R_EAX] = ret; 2283f8258c1SLaurent Vivier } 2293f8258c1SLaurent Vivier break; 2303f8258c1SLaurent Vivier #ifndef TARGET_ABI32 2313f8258c1SLaurent Vivier case EXCP_SYSCALL: 2323f8258c1SLaurent Vivier /* linux syscall from syscall instruction */ 2333f8258c1SLaurent Vivier ret = do_syscall(env, 2343f8258c1SLaurent Vivier env->regs[R_EAX], 2353f8258c1SLaurent Vivier env->regs[R_EDI], 2363f8258c1SLaurent Vivier env->regs[R_ESI], 2373f8258c1SLaurent Vivier env->regs[R_EDX], 2383f8258c1SLaurent Vivier env->regs[10], 2393f8258c1SLaurent Vivier env->regs[8], 2403f8258c1SLaurent Vivier env->regs[9], 2413f8258c1SLaurent Vivier 0, 0); 242af254a27SRichard Henderson if (ret == -QEMU_ERESTARTSYS) { 2433f8258c1SLaurent Vivier env->eip -= 2; 24457a0c938SRichard Henderson } else if (ret != -QEMU_ESIGRETURN) { 2453f8258c1SLaurent Vivier env->regs[R_EAX] = ret; 2463f8258c1SLaurent Vivier } 2473f8258c1SLaurent Vivier break; 2483f8258c1SLaurent Vivier #endif 249b26491b4SRichard Henderson #ifdef TARGET_X86_64 250b26491b4SRichard Henderson case EXCP_VSYSCALL: 251b26491b4SRichard Henderson emulate_vsyscall(env); 252b26491b4SRichard Henderson break; 253b26491b4SRichard Henderson #endif 2543f8258c1SLaurent Vivier case EXCP0B_NOSEG: 2553f8258c1SLaurent Vivier case EXCP0C_STACK: 256d08d6d66SRichard Henderson force_sig(TARGET_SIGBUS); 2573f8258c1SLaurent Vivier break; 2583f8258c1SLaurent Vivier case EXCP0D_GPF: 2593f8258c1SLaurent Vivier /* XXX: potential problem if ABI32 */ 2601ade5b2fSRichard Henderson if (maybe_handle_vm86_trap(env, trapnr)) { 261acf768a9SRichard Henderson break; 2623f8258c1SLaurent Vivier } 263d08d6d66SRichard Henderson force_sig(TARGET_SIGSEGV); 2643f8258c1SLaurent Vivier break; 2653f8258c1SLaurent Vivier case EXCP0E_PAGE: 266d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGSEGV, 267d08d6d66SRichard Henderson (env->error_code & PG_ERROR_P_MASK ? 268acf768a9SRichard Henderson TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR), 269acf768a9SRichard Henderson env->cr[2]); 2703f8258c1SLaurent Vivier break; 2713f8258c1SLaurent Vivier case EXCP00_DIVZ: 2721ade5b2fSRichard Henderson if (maybe_handle_vm86_trap(env, trapnr)) { 273acf768a9SRichard Henderson break; 2743f8258c1SLaurent Vivier } 275d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTDIV, env->eip); 2763f8258c1SLaurent Vivier break; 2773f8258c1SLaurent Vivier case EXCP01_DB: 278d08d6d66SRichard Henderson if (maybe_handle_vm86_trap(env, trapnr)) { 279d08d6d66SRichard Henderson break; 280d08d6d66SRichard Henderson } 281d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->eip); 282d08d6d66SRichard Henderson break; 2833f8258c1SLaurent Vivier case EXCP03_INT3: 2841ade5b2fSRichard Henderson if (maybe_handle_vm86_trap(env, trapnr)) { 285acf768a9SRichard Henderson break; 2863f8258c1SLaurent Vivier } 287d08d6d66SRichard Henderson force_sig(TARGET_SIGTRAP); 2883f8258c1SLaurent Vivier break; 2893f8258c1SLaurent Vivier case EXCP04_INTO: 2903f8258c1SLaurent Vivier case EXCP05_BOUND: 2911ade5b2fSRichard Henderson if (maybe_handle_vm86_trap(env, trapnr)) { 292acf768a9SRichard Henderson break; 2933f8258c1SLaurent Vivier } 294d08d6d66SRichard Henderson force_sig(TARGET_SIGSEGV); 2953f8258c1SLaurent Vivier break; 2963f8258c1SLaurent Vivier case EXCP06_ILLOP: 297d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGILL, TARGET_ILL_ILLOPN, env->eip); 2983f8258c1SLaurent Vivier break; 2993f8258c1SLaurent Vivier case EXCP_INTERRUPT: 3003f8258c1SLaurent Vivier /* just indicate that signals should be handled asap */ 3013f8258c1SLaurent Vivier break; 3023f8258c1SLaurent Vivier case EXCP_DEBUG: 303d08d6d66SRichard Henderson force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->eip); 3043f8258c1SLaurent Vivier break; 3053f8258c1SLaurent Vivier case EXCP_ATOMIC: 3063f8258c1SLaurent Vivier cpu_exec_step_atomic(cs); 3073f8258c1SLaurent Vivier break; 3083f8258c1SLaurent Vivier default: 309bd5ccd61SHelge Deller EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", 310bd5ccd61SHelge Deller trapnr); 3113f8258c1SLaurent Vivier abort(); 3123f8258c1SLaurent Vivier } 3133f8258c1SLaurent Vivier process_pending_signals(env); 3143f8258c1SLaurent Vivier } 3153f8258c1SLaurent Vivier } 3163f8258c1SLaurent Vivier 317*2732c739Sfanwj@mail.ustc.edu.cn static void target_cpu_free(void *obj) 318*2732c739Sfanwj@mail.ustc.edu.cn { 319*2732c739Sfanwj@mail.ustc.edu.cn CPUArchState *env = ((CPUState *)obj)->env_ptr; 320*2732c739Sfanwj@mail.ustc.edu.cn target_munmap(env->gdt.base, sizeof(uint64_t) * TARGET_GDT_ENTRIES); 321*2732c739Sfanwj@mail.ustc.edu.cn g_free(obj); 322*2732c739Sfanwj@mail.ustc.edu.cn } 323*2732c739Sfanwj@mail.ustc.edu.cn 324cd71c089SLaurent Vivier void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) 325cd71c089SLaurent Vivier { 326*2732c739Sfanwj@mail.ustc.edu.cn CPUState *cpu = env_cpu(env); 327*2732c739Sfanwj@mail.ustc.edu.cn OBJECT(cpu)->free = target_cpu_free; 3283f8258c1SLaurent Vivier env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; 3293f8258c1SLaurent Vivier env->hflags |= HF_PE_MASK | HF_CPL_MASK; 3303f8258c1SLaurent Vivier if (env->features[FEAT_1_EDX] & CPUID_SSE) { 3313f8258c1SLaurent Vivier env->cr[4] |= CR4_OSFXSR_MASK; 3323f8258c1SLaurent Vivier env->hflags |= HF_OSFXSR_MASK; 3333f8258c1SLaurent Vivier } 3343f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3353f8258c1SLaurent Vivier /* enable 64 bit mode if possible */ 3363f8258c1SLaurent Vivier if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) { 3373f8258c1SLaurent Vivier fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); 3383f8258c1SLaurent Vivier exit(EXIT_FAILURE); 3393f8258c1SLaurent Vivier } 3403f8258c1SLaurent Vivier env->cr[4] |= CR4_PAE_MASK; 3413f8258c1SLaurent Vivier env->efer |= MSR_EFER_LMA | MSR_EFER_LME; 3423f8258c1SLaurent Vivier env->hflags |= HF_LMA_MASK; 3433f8258c1SLaurent Vivier #endif 3443f8258c1SLaurent Vivier 3453f8258c1SLaurent Vivier /* flags setup : we activate the IRQs by default as in user mode */ 3463f8258c1SLaurent Vivier env->eflags |= IF_MASK; 3473f8258c1SLaurent Vivier 3483f8258c1SLaurent Vivier /* linux register setup */ 3493f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3503f8258c1SLaurent Vivier env->regs[R_EAX] = regs->rax; 3513f8258c1SLaurent Vivier env->regs[R_EBX] = regs->rbx; 3523f8258c1SLaurent Vivier env->regs[R_ECX] = regs->rcx; 3533f8258c1SLaurent Vivier env->regs[R_EDX] = regs->rdx; 3543f8258c1SLaurent Vivier env->regs[R_ESI] = regs->rsi; 3553f8258c1SLaurent Vivier env->regs[R_EDI] = regs->rdi; 3563f8258c1SLaurent Vivier env->regs[R_EBP] = regs->rbp; 3573f8258c1SLaurent Vivier env->regs[R_ESP] = regs->rsp; 3583f8258c1SLaurent Vivier env->eip = regs->rip; 3593f8258c1SLaurent Vivier #else 3603f8258c1SLaurent Vivier env->regs[R_EAX] = regs->eax; 3613f8258c1SLaurent Vivier env->regs[R_EBX] = regs->ebx; 3623f8258c1SLaurent Vivier env->regs[R_ECX] = regs->ecx; 3633f8258c1SLaurent Vivier env->regs[R_EDX] = regs->edx; 3643f8258c1SLaurent Vivier env->regs[R_ESI] = regs->esi; 3653f8258c1SLaurent Vivier env->regs[R_EDI] = regs->edi; 3663f8258c1SLaurent Vivier env->regs[R_EBP] = regs->ebp; 3673f8258c1SLaurent Vivier env->regs[R_ESP] = regs->esp; 3683f8258c1SLaurent Vivier env->eip = regs->eip; 3693f8258c1SLaurent Vivier #endif 3703f8258c1SLaurent Vivier 3713f8258c1SLaurent Vivier /* linux interrupt setup */ 3723f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3733f8258c1SLaurent Vivier env->idt.limit = 511; 3743f8258c1SLaurent Vivier #else 3753f8258c1SLaurent Vivier env->idt.limit = 255; 3763f8258c1SLaurent Vivier #endif 3773f8258c1SLaurent Vivier env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), 3783f8258c1SLaurent Vivier PROT_READ|PROT_WRITE, 3793f8258c1SLaurent Vivier MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 3803e8f1628SRichard Henderson idt_table = g2h_untagged(env->idt.base); 3813f8258c1SLaurent Vivier set_idt(0, 0); 3823f8258c1SLaurent Vivier set_idt(1, 0); 3833f8258c1SLaurent Vivier set_idt(2, 0); 3843f8258c1SLaurent Vivier set_idt(3, 3); 3853f8258c1SLaurent Vivier set_idt(4, 3); 3863f8258c1SLaurent Vivier set_idt(5, 0); 3873f8258c1SLaurent Vivier set_idt(6, 0); 3883f8258c1SLaurent Vivier set_idt(7, 0); 3893f8258c1SLaurent Vivier set_idt(8, 0); 3903f8258c1SLaurent Vivier set_idt(9, 0); 3913f8258c1SLaurent Vivier set_idt(10, 0); 3923f8258c1SLaurent Vivier set_idt(11, 0); 3933f8258c1SLaurent Vivier set_idt(12, 0); 3943f8258c1SLaurent Vivier set_idt(13, 0); 3953f8258c1SLaurent Vivier set_idt(14, 0); 3963f8258c1SLaurent Vivier set_idt(15, 0); 3973f8258c1SLaurent Vivier set_idt(16, 0); 3983f8258c1SLaurent Vivier set_idt(17, 0); 3993f8258c1SLaurent Vivier set_idt(18, 0); 4003f8258c1SLaurent Vivier set_idt(19, 0); 4013f8258c1SLaurent Vivier set_idt(0x80, 3); 4023f8258c1SLaurent Vivier 4033f8258c1SLaurent Vivier /* linux segment setup */ 4043f8258c1SLaurent Vivier { 4053f8258c1SLaurent Vivier uint64_t *gdt_table; 4063f8258c1SLaurent Vivier env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, 4073f8258c1SLaurent Vivier PROT_READ|PROT_WRITE, 4083f8258c1SLaurent Vivier MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 4093f8258c1SLaurent Vivier env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; 4103e8f1628SRichard Henderson gdt_table = g2h_untagged(env->gdt.base); 4113f8258c1SLaurent Vivier #ifdef TARGET_ABI32 4123f8258c1SLaurent Vivier write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 4133f8258c1SLaurent Vivier DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 4143f8258c1SLaurent Vivier (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 4153f8258c1SLaurent Vivier #else 4163f8258c1SLaurent Vivier /* 64 bit code segment */ 4173f8258c1SLaurent Vivier write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 4183f8258c1SLaurent Vivier DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 4193f8258c1SLaurent Vivier DESC_L_MASK | 4203f8258c1SLaurent Vivier (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 4213f8258c1SLaurent Vivier #endif 4223f8258c1SLaurent Vivier write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, 4233f8258c1SLaurent Vivier DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 4243f8258c1SLaurent Vivier (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); 4253f8258c1SLaurent Vivier } 4263f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_CS, __USER_CS); 4273f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_SS, __USER_DS); 4283f8258c1SLaurent Vivier #ifdef TARGET_ABI32 4293f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_DS, __USER_DS); 4303f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_ES, __USER_DS); 4313f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_FS, __USER_DS); 4323f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_GS, __USER_DS); 4333f8258c1SLaurent Vivier /* This hack makes Wine work... */ 4343f8258c1SLaurent Vivier env->segs[R_FS].selector = 0; 4353f8258c1SLaurent Vivier #else 4363f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_DS, 0); 4373f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_ES, 0); 4383f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_FS, 0); 4393f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_GS, 0); 4403f8258c1SLaurent Vivier #endif 441cd71c089SLaurent Vivier } 442