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" 21a8d25326SMarkus Armbruster #include "qemu-common.h" 22cd71c089SLaurent Vivier #include "qemu.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 87acf768a9SRichard Henderson static void gen_signal(CPUX86State *env, int sig, int code, abi_ptr addr) 88acf768a9SRichard Henderson { 89acf768a9SRichard Henderson target_siginfo_t info = { 90acf768a9SRichard Henderson .si_signo = sig, 91acf768a9SRichard Henderson .si_code = code, 92acf768a9SRichard Henderson ._sifields._sigfault._addr = addr 93acf768a9SRichard Henderson }; 94acf768a9SRichard Henderson 95acf768a9SRichard Henderson queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); 96acf768a9SRichard Henderson } 97acf768a9SRichard Henderson 98b26491b4SRichard Henderson #ifdef TARGET_X86_64 99b26491b4SRichard Henderson static bool write_ok_or_segv(CPUX86State *env, abi_ptr addr, size_t len) 100b26491b4SRichard Henderson { 101b26491b4SRichard Henderson /* 102b26491b4SRichard Henderson * For all the vsyscalls, NULL means "don't write anything" not 103b26491b4SRichard Henderson * "write it at address 0". 104b26491b4SRichard Henderson */ 105c7169b02SRichard Henderson if (addr == 0 || access_ok(env_cpu(env), VERIFY_WRITE, addr, len)) { 106b26491b4SRichard Henderson return true; 107b26491b4SRichard Henderson } 108b26491b4SRichard Henderson 109b26491b4SRichard Henderson env->error_code = PG_ERROR_W_MASK | PG_ERROR_U_MASK; 110b26491b4SRichard Henderson gen_signal(env, TARGET_SIGSEGV, TARGET_SEGV_MAPERR, addr); 111b26491b4SRichard Henderson return false; 112b26491b4SRichard Henderson } 113b26491b4SRichard Henderson 114b26491b4SRichard Henderson /* 115b26491b4SRichard Henderson * Since v3.1, the kernel traps and emulates the vsyscall page. 116b26491b4SRichard Henderson * Entry points other than the official generate SIGSEGV. 117b26491b4SRichard Henderson */ 118b26491b4SRichard Henderson static void emulate_vsyscall(CPUX86State *env) 119b26491b4SRichard Henderson { 120b26491b4SRichard Henderson int syscall; 121b26491b4SRichard Henderson abi_ulong ret; 122b26491b4SRichard Henderson uint64_t caller; 123b26491b4SRichard Henderson 124b26491b4SRichard Henderson /* 125b26491b4SRichard Henderson * Validate the entry point. We have already validated the page 126b26491b4SRichard Henderson * during translation to get here; now verify the offset. 127b26491b4SRichard Henderson */ 128b26491b4SRichard Henderson switch (env->eip & ~TARGET_PAGE_MASK) { 129b26491b4SRichard Henderson case 0x000: 130b26491b4SRichard Henderson syscall = TARGET_NR_gettimeofday; 131b26491b4SRichard Henderson break; 132b26491b4SRichard Henderson case 0x400: 133b26491b4SRichard Henderson syscall = TARGET_NR_time; 134b26491b4SRichard Henderson break; 135b26491b4SRichard Henderson case 0x800: 136b26491b4SRichard Henderson syscall = TARGET_NR_getcpu; 137b26491b4SRichard Henderson break; 138b26491b4SRichard Henderson default: 139b26491b4SRichard Henderson goto sigsegv; 140b26491b4SRichard Henderson } 141b26491b4SRichard Henderson 142b26491b4SRichard Henderson /* 143b26491b4SRichard Henderson * Validate the return address. 144b26491b4SRichard Henderson * Note that the kernel treats this the same as an invalid entry point. 145b26491b4SRichard Henderson */ 146b26491b4SRichard Henderson if (get_user_u64(caller, env->regs[R_ESP])) { 147b26491b4SRichard Henderson goto sigsegv; 148b26491b4SRichard Henderson } 149b26491b4SRichard Henderson 150b26491b4SRichard Henderson /* 151b26491b4SRichard Henderson * Validate the the pointer arguments. 152b26491b4SRichard Henderson */ 153b26491b4SRichard Henderson switch (syscall) { 154b26491b4SRichard Henderson case TARGET_NR_gettimeofday: 155b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], 156b26491b4SRichard Henderson sizeof(struct target_timeval)) || 157b26491b4SRichard Henderson !write_ok_or_segv(env, env->regs[R_ESI], 158b26491b4SRichard Henderson sizeof(struct target_timezone))) { 159b26491b4SRichard Henderson return; 160b26491b4SRichard Henderson } 161b26491b4SRichard Henderson break; 162b26491b4SRichard Henderson case TARGET_NR_time: 163b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], sizeof(abi_long))) { 164b26491b4SRichard Henderson return; 165b26491b4SRichard Henderson } 166b26491b4SRichard Henderson break; 167b26491b4SRichard Henderson case TARGET_NR_getcpu: 168b26491b4SRichard Henderson if (!write_ok_or_segv(env, env->regs[R_EDI], sizeof(uint32_t)) || 169b26491b4SRichard Henderson !write_ok_or_segv(env, env->regs[R_ESI], sizeof(uint32_t))) { 170b26491b4SRichard Henderson return; 171b26491b4SRichard Henderson } 172b26491b4SRichard Henderson break; 173b26491b4SRichard Henderson default: 174b26491b4SRichard Henderson g_assert_not_reached(); 175b26491b4SRichard Henderson } 176b26491b4SRichard Henderson 177b26491b4SRichard Henderson /* 178b26491b4SRichard Henderson * Perform the syscall. None of the vsyscalls should need restarting. 179b26491b4SRichard Henderson */ 180b26491b4SRichard Henderson ret = do_syscall(env, syscall, env->regs[R_EDI], env->regs[R_ESI], 181b26491b4SRichard Henderson env->regs[R_EDX], env->regs[10], env->regs[8], 182b26491b4SRichard Henderson env->regs[9], 0, 0); 183*af254a27SRichard Henderson g_assert(ret != -QEMU_ERESTARTSYS); 184b26491b4SRichard Henderson g_assert(ret != -TARGET_QEMU_ESIGRETURN); 185b26491b4SRichard Henderson if (ret == -TARGET_EFAULT) { 186b26491b4SRichard Henderson goto sigsegv; 187b26491b4SRichard Henderson } 188b26491b4SRichard Henderson env->regs[R_EAX] = ret; 189b26491b4SRichard Henderson 190b26491b4SRichard Henderson /* Emulate a ret instruction to leave the vsyscall page. */ 191b26491b4SRichard Henderson env->eip = caller; 192b26491b4SRichard Henderson env->regs[R_ESP] += 8; 193b26491b4SRichard Henderson return; 194b26491b4SRichard Henderson 195b26491b4SRichard Henderson sigsegv: 196b26491b4SRichard Henderson /* Like force_sig(SIGSEGV). */ 197b26491b4SRichard Henderson gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0); 198b26491b4SRichard Henderson } 199b26491b4SRichard Henderson #endif 200b26491b4SRichard Henderson 2013f8258c1SLaurent Vivier void cpu_loop(CPUX86State *env) 2023f8258c1SLaurent Vivier { 2036aa9e42fSRichard Henderson CPUState *cs = env_cpu(env); 2043f8258c1SLaurent Vivier int trapnr; 2053f8258c1SLaurent Vivier abi_ulong pc; 2063f8258c1SLaurent Vivier abi_ulong ret; 2073f8258c1SLaurent Vivier 2083f8258c1SLaurent Vivier for(;;) { 2093f8258c1SLaurent Vivier cpu_exec_start(cs); 2103f8258c1SLaurent Vivier trapnr = cpu_exec(cs); 2113f8258c1SLaurent Vivier cpu_exec_end(cs); 2123f8258c1SLaurent Vivier process_queued_cpu_work(cs); 2133f8258c1SLaurent Vivier 2143f8258c1SLaurent Vivier switch(trapnr) { 2153f8258c1SLaurent Vivier case 0x80: 2163f8258c1SLaurent Vivier /* linux syscall from int $0x80 */ 2173f8258c1SLaurent Vivier ret = do_syscall(env, 2183f8258c1SLaurent Vivier env->regs[R_EAX], 2193f8258c1SLaurent Vivier env->regs[R_EBX], 2203f8258c1SLaurent Vivier env->regs[R_ECX], 2213f8258c1SLaurent Vivier env->regs[R_EDX], 2223f8258c1SLaurent Vivier env->regs[R_ESI], 2233f8258c1SLaurent Vivier env->regs[R_EDI], 2243f8258c1SLaurent Vivier env->regs[R_EBP], 2253f8258c1SLaurent Vivier 0, 0); 226*af254a27SRichard Henderson if (ret == -QEMU_ERESTARTSYS) { 2273f8258c1SLaurent Vivier env->eip -= 2; 2283f8258c1SLaurent Vivier } else if (ret != -TARGET_QEMU_ESIGRETURN) { 2293f8258c1SLaurent Vivier env->regs[R_EAX] = ret; 2303f8258c1SLaurent Vivier } 2313f8258c1SLaurent Vivier break; 2323f8258c1SLaurent Vivier #ifndef TARGET_ABI32 2333f8258c1SLaurent Vivier case EXCP_SYSCALL: 2343f8258c1SLaurent Vivier /* linux syscall from syscall instruction */ 2353f8258c1SLaurent Vivier ret = do_syscall(env, 2363f8258c1SLaurent Vivier env->regs[R_EAX], 2373f8258c1SLaurent Vivier env->regs[R_EDI], 2383f8258c1SLaurent Vivier env->regs[R_ESI], 2393f8258c1SLaurent Vivier env->regs[R_EDX], 2403f8258c1SLaurent Vivier env->regs[10], 2413f8258c1SLaurent Vivier env->regs[8], 2423f8258c1SLaurent Vivier env->regs[9], 2433f8258c1SLaurent Vivier 0, 0); 244*af254a27SRichard Henderson if (ret == -QEMU_ERESTARTSYS) { 2453f8258c1SLaurent Vivier env->eip -= 2; 2463f8258c1SLaurent Vivier } else if (ret != -TARGET_QEMU_ESIGRETURN) { 2473f8258c1SLaurent Vivier env->regs[R_EAX] = ret; 2483f8258c1SLaurent Vivier } 2493f8258c1SLaurent Vivier break; 2503f8258c1SLaurent Vivier #endif 251b26491b4SRichard Henderson #ifdef TARGET_X86_64 252b26491b4SRichard Henderson case EXCP_VSYSCALL: 253b26491b4SRichard Henderson emulate_vsyscall(env); 254b26491b4SRichard Henderson break; 255b26491b4SRichard Henderson #endif 2563f8258c1SLaurent Vivier case EXCP0B_NOSEG: 2573f8258c1SLaurent Vivier case EXCP0C_STACK: 258acf768a9SRichard Henderson gen_signal(env, TARGET_SIGBUS, TARGET_SI_KERNEL, 0); 2593f8258c1SLaurent Vivier break; 2603f8258c1SLaurent Vivier case EXCP0D_GPF: 2613f8258c1SLaurent Vivier /* XXX: potential problem if ABI32 */ 2623f8258c1SLaurent Vivier #ifndef TARGET_X86_64 2633f8258c1SLaurent Vivier if (env->eflags & VM_MASK) { 2643f8258c1SLaurent Vivier handle_vm86_fault(env); 265acf768a9SRichard Henderson break; 2663f8258c1SLaurent Vivier } 267acf768a9SRichard Henderson #endif 268acf768a9SRichard Henderson gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0); 2693f8258c1SLaurent Vivier break; 2703f8258c1SLaurent Vivier case EXCP0E_PAGE: 271acf768a9SRichard Henderson gen_signal(env, TARGET_SIGSEGV, 272acf768a9SRichard Henderson (env->error_code & 1 ? 273acf768a9SRichard Henderson TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR), 274acf768a9SRichard Henderson env->cr[2]); 2753f8258c1SLaurent Vivier break; 2763f8258c1SLaurent Vivier case EXCP00_DIVZ: 2773f8258c1SLaurent Vivier #ifndef TARGET_X86_64 2783f8258c1SLaurent Vivier if (env->eflags & VM_MASK) { 2793f8258c1SLaurent Vivier handle_vm86_trap(env, trapnr); 280acf768a9SRichard Henderson break; 2813f8258c1SLaurent Vivier } 282acf768a9SRichard Henderson #endif 283acf768a9SRichard Henderson gen_signal(env, TARGET_SIGFPE, TARGET_FPE_INTDIV, env->eip); 2843f8258c1SLaurent Vivier break; 2853f8258c1SLaurent Vivier case EXCP01_DB: 2863f8258c1SLaurent Vivier case EXCP03_INT3: 2873f8258c1SLaurent Vivier #ifndef TARGET_X86_64 2883f8258c1SLaurent Vivier if (env->eflags & VM_MASK) { 2893f8258c1SLaurent Vivier handle_vm86_trap(env, trapnr); 290acf768a9SRichard Henderson break; 2913f8258c1SLaurent Vivier } 292acf768a9SRichard Henderson #endif 293acf768a9SRichard Henderson if (trapnr == EXCP01_DB) { 294acf768a9SRichard Henderson gen_signal(env, TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->eip); 295acf768a9SRichard Henderson } else { 296acf768a9SRichard Henderson gen_signal(env, TARGET_SIGTRAP, TARGET_SI_KERNEL, 0); 2973f8258c1SLaurent Vivier } 2983f8258c1SLaurent Vivier break; 2993f8258c1SLaurent Vivier case EXCP04_INTO: 3003f8258c1SLaurent Vivier case EXCP05_BOUND: 3013f8258c1SLaurent Vivier #ifndef TARGET_X86_64 3023f8258c1SLaurent Vivier if (env->eflags & VM_MASK) { 3033f8258c1SLaurent Vivier handle_vm86_trap(env, trapnr); 304acf768a9SRichard Henderson break; 3053f8258c1SLaurent Vivier } 306acf768a9SRichard Henderson #endif 307acf768a9SRichard Henderson gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0); 3083f8258c1SLaurent Vivier break; 3093f8258c1SLaurent Vivier case EXCP06_ILLOP: 310acf768a9SRichard Henderson gen_signal(env, TARGET_SIGILL, TARGET_ILL_ILLOPN, env->eip); 3113f8258c1SLaurent Vivier break; 3123f8258c1SLaurent Vivier case EXCP_INTERRUPT: 3133f8258c1SLaurent Vivier /* just indicate that signals should be handled asap */ 3143f8258c1SLaurent Vivier break; 3153f8258c1SLaurent Vivier case EXCP_DEBUG: 316acf768a9SRichard Henderson gen_signal(env, TARGET_SIGTRAP, TARGET_TRAP_BRKPT, 0); 3173f8258c1SLaurent Vivier break; 3183f8258c1SLaurent Vivier case EXCP_ATOMIC: 3193f8258c1SLaurent Vivier cpu_exec_step_atomic(cs); 3203f8258c1SLaurent Vivier break; 3213f8258c1SLaurent Vivier default: 3223f8258c1SLaurent Vivier pc = env->segs[R_CS].base + env->eip; 3233f8258c1SLaurent Vivier EXCP_DUMP(env, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", 3243f8258c1SLaurent Vivier (long)pc, trapnr); 3253f8258c1SLaurent Vivier abort(); 3263f8258c1SLaurent Vivier } 3273f8258c1SLaurent Vivier process_pending_signals(env); 3283f8258c1SLaurent Vivier } 3293f8258c1SLaurent Vivier } 3303f8258c1SLaurent Vivier 331cd71c089SLaurent Vivier void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) 332cd71c089SLaurent Vivier { 3333f8258c1SLaurent Vivier env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; 3343f8258c1SLaurent Vivier env->hflags |= HF_PE_MASK | HF_CPL_MASK; 3353f8258c1SLaurent Vivier if (env->features[FEAT_1_EDX] & CPUID_SSE) { 3363f8258c1SLaurent Vivier env->cr[4] |= CR4_OSFXSR_MASK; 3373f8258c1SLaurent Vivier env->hflags |= HF_OSFXSR_MASK; 3383f8258c1SLaurent Vivier } 3393f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3403f8258c1SLaurent Vivier /* enable 64 bit mode if possible */ 3413f8258c1SLaurent Vivier if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) { 3423f8258c1SLaurent Vivier fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); 3433f8258c1SLaurent Vivier exit(EXIT_FAILURE); 3443f8258c1SLaurent Vivier } 3453f8258c1SLaurent Vivier env->cr[4] |= CR4_PAE_MASK; 3463f8258c1SLaurent Vivier env->efer |= MSR_EFER_LMA | MSR_EFER_LME; 3473f8258c1SLaurent Vivier env->hflags |= HF_LMA_MASK; 3483f8258c1SLaurent Vivier #endif 3493f8258c1SLaurent Vivier 3503f8258c1SLaurent Vivier /* flags setup : we activate the IRQs by default as in user mode */ 3513f8258c1SLaurent Vivier env->eflags |= IF_MASK; 3523f8258c1SLaurent Vivier 3533f8258c1SLaurent Vivier /* linux register setup */ 3543f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3553f8258c1SLaurent Vivier env->regs[R_EAX] = regs->rax; 3563f8258c1SLaurent Vivier env->regs[R_EBX] = regs->rbx; 3573f8258c1SLaurent Vivier env->regs[R_ECX] = regs->rcx; 3583f8258c1SLaurent Vivier env->regs[R_EDX] = regs->rdx; 3593f8258c1SLaurent Vivier env->regs[R_ESI] = regs->rsi; 3603f8258c1SLaurent Vivier env->regs[R_EDI] = regs->rdi; 3613f8258c1SLaurent Vivier env->regs[R_EBP] = regs->rbp; 3623f8258c1SLaurent Vivier env->regs[R_ESP] = regs->rsp; 3633f8258c1SLaurent Vivier env->eip = regs->rip; 3643f8258c1SLaurent Vivier #else 3653f8258c1SLaurent Vivier env->regs[R_EAX] = regs->eax; 3663f8258c1SLaurent Vivier env->regs[R_EBX] = regs->ebx; 3673f8258c1SLaurent Vivier env->regs[R_ECX] = regs->ecx; 3683f8258c1SLaurent Vivier env->regs[R_EDX] = regs->edx; 3693f8258c1SLaurent Vivier env->regs[R_ESI] = regs->esi; 3703f8258c1SLaurent Vivier env->regs[R_EDI] = regs->edi; 3713f8258c1SLaurent Vivier env->regs[R_EBP] = regs->ebp; 3723f8258c1SLaurent Vivier env->regs[R_ESP] = regs->esp; 3733f8258c1SLaurent Vivier env->eip = regs->eip; 3743f8258c1SLaurent Vivier #endif 3753f8258c1SLaurent Vivier 3763f8258c1SLaurent Vivier /* linux interrupt setup */ 3773f8258c1SLaurent Vivier #ifndef TARGET_ABI32 3783f8258c1SLaurent Vivier env->idt.limit = 511; 3793f8258c1SLaurent Vivier #else 3803f8258c1SLaurent Vivier env->idt.limit = 255; 3813f8258c1SLaurent Vivier #endif 3823f8258c1SLaurent Vivier env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), 3833f8258c1SLaurent Vivier PROT_READ|PROT_WRITE, 3843f8258c1SLaurent Vivier MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 3853e8f1628SRichard Henderson idt_table = g2h_untagged(env->idt.base); 3863f8258c1SLaurent Vivier set_idt(0, 0); 3873f8258c1SLaurent Vivier set_idt(1, 0); 3883f8258c1SLaurent Vivier set_idt(2, 0); 3893f8258c1SLaurent Vivier set_idt(3, 3); 3903f8258c1SLaurent Vivier set_idt(4, 3); 3913f8258c1SLaurent Vivier set_idt(5, 0); 3923f8258c1SLaurent Vivier set_idt(6, 0); 3933f8258c1SLaurent Vivier set_idt(7, 0); 3943f8258c1SLaurent Vivier set_idt(8, 0); 3953f8258c1SLaurent Vivier set_idt(9, 0); 3963f8258c1SLaurent Vivier set_idt(10, 0); 3973f8258c1SLaurent Vivier set_idt(11, 0); 3983f8258c1SLaurent Vivier set_idt(12, 0); 3993f8258c1SLaurent Vivier set_idt(13, 0); 4003f8258c1SLaurent Vivier set_idt(14, 0); 4013f8258c1SLaurent Vivier set_idt(15, 0); 4023f8258c1SLaurent Vivier set_idt(16, 0); 4033f8258c1SLaurent Vivier set_idt(17, 0); 4043f8258c1SLaurent Vivier set_idt(18, 0); 4053f8258c1SLaurent Vivier set_idt(19, 0); 4063f8258c1SLaurent Vivier set_idt(0x80, 3); 4073f8258c1SLaurent Vivier 4083f8258c1SLaurent Vivier /* linux segment setup */ 4093f8258c1SLaurent Vivier { 4103f8258c1SLaurent Vivier uint64_t *gdt_table; 4113f8258c1SLaurent Vivier env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, 4123f8258c1SLaurent Vivier PROT_READ|PROT_WRITE, 4133f8258c1SLaurent Vivier MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 4143f8258c1SLaurent Vivier env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; 4153e8f1628SRichard Henderson gdt_table = g2h_untagged(env->gdt.base); 4163f8258c1SLaurent Vivier #ifdef TARGET_ABI32 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 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 4203f8258c1SLaurent Vivier #else 4213f8258c1SLaurent Vivier /* 64 bit code segment */ 4223f8258c1SLaurent Vivier write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 4233f8258c1SLaurent Vivier DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 4243f8258c1SLaurent Vivier DESC_L_MASK | 4253f8258c1SLaurent Vivier (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 4263f8258c1SLaurent Vivier #endif 4273f8258c1SLaurent Vivier write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, 4283f8258c1SLaurent Vivier DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 4293f8258c1SLaurent Vivier (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); 4303f8258c1SLaurent Vivier } 4313f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_CS, __USER_CS); 4323f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_SS, __USER_DS); 4333f8258c1SLaurent Vivier #ifdef TARGET_ABI32 4343f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_DS, __USER_DS); 4353f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_ES, __USER_DS); 4363f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_FS, __USER_DS); 4373f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_GS, __USER_DS); 4383f8258c1SLaurent Vivier /* This hack makes Wine work... */ 4393f8258c1SLaurent Vivier env->segs[R_FS].selector = 0; 4403f8258c1SLaurent Vivier #else 4413f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_DS, 0); 4423f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_ES, 0); 4433f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_FS, 0); 4443f8258c1SLaurent Vivier cpu_x86_load_seg(env, R_GS, 0); 4453f8258c1SLaurent Vivier #endif 446cd71c089SLaurent Vivier } 447