| |
| /*--------------------------------------------------------------------*/ |
| /*--- x86-Linux-specific stuff for the core. ---*/ |
| /*--- x86-linux/core_platform.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, an extensible x86 protected-mode |
| emulator for monitoring program execution on x86-Unixes. |
| |
| Copyright (C) 2000-2004 Nicholas Nethercote |
| njn25@cam.ac.uk |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #ifndef __X86_LINUX_CORE_PLATFORM_H |
| #define __X86_LINUX_CORE_PLATFORM_H |
| |
| //#include "core_platform_asm.h" // platform-specific asm stuff |
| //#include "platform_arch.h" // platform-specific tool stuff |
| |
| /* --------------------------------------------------------------------- |
| Interesting registers |
| ------------------------------------------------------------------ */ |
| |
| // Accessors for the arch_thread_t |
| #define PLATFORM_SYSCALL_NUM(regs) ((regs).vex.guest_EAX) |
| #define PLATFORM_SYSCALL_RET(regs) ((regs).vex.guest_EAX) |
| #define PLATFORM_SYSCALL_ARG1(regs) ((regs).vex.guest_EBX) |
| #define PLATFORM_SYSCALL_ARG2(regs) ((regs).vex.guest_ECX) |
| #define PLATFORM_SYSCALL_ARG3(regs) ((regs).vex.guest_EDX) |
| #define PLATFORM_SYSCALL_ARG4(regs) ((regs).vex.guest_ESI) |
| #define PLATFORM_SYSCALL_ARG5(regs) ((regs).vex.guest_EDI) |
| #define PLATFORM_SYSCALL_ARG6(regs) ((regs).vex.guest_EBP) |
| |
| #define PLATFORM_SET_SYSCALL_RESULT(regs, val) \ |
| ((regs).vex.guest_EAX = (val)) |
| |
| // Interesting register numbers |
| #define R_SYSCALL_NUM R_EAX |
| #define R_SYSCALL_ARG1 R_EBX |
| #define R_SYSCALL_ARG2 R_ECX |
| #define R_SYSCALL_ARG3 R_EDX |
| #define R_SYSCALL_ARG4 R_ESI |
| #define R_SYSCALL_ARG5 R_EDI |
| #define R_SYSCALL_ARG6 R_EBP |
| #define R_SYSCALL_RET R_EAX |
| |
| // Setting thread regs and shadow regs from within the core |
| #define SET_SYSCALL_RETVAL(zztid, zzval) \ |
| SET_THREAD_REG(zztid, zzval, PLATFORM_SYSCALL_RET, R_SYSCALL_RET, \ |
| post_reg_write_syscall_return) |
| |
| /* --------------------------------------------------------------------- |
| Exports of vg_ldt.c |
| ------------------------------------------------------------------ */ |
| |
| // XXX: eventually all these should be x86-private, and not visible to the |
| // core (except maybe do_useseg()?) |
| |
| /* Simulate the modify_ldt syscall. */ |
| extern Int VG_(sys_modify_ldt) ( ThreadId tid, |
| Int func, void* ptr, UInt bytecount ); |
| |
| /* Simulate the {get,set}_thread_area syscalls. */ |
| extern Int VG_(sys_set_thread_area) ( ThreadId tid, |
| vki_modify_ldt_t* info ); |
| extern Int VG_(sys_get_thread_area) ( ThreadId tid, |
| vki_modify_ldt_t* info ); |
| |
| /* Called from generated code. Given a segment selector and a virtual |
| address, return a linear address, and do limit checks too. */ |
| extern Addr VG_(do_useseg) ( UInt seg_selector, Addr virtual_addr ); |
| |
| /* --------------------------------------------------------------------- |
| ucontext stuff |
| ------------------------------------------------------------------ */ |
| |
| #define UCONTEXT_INSTR_PTR(uc) ((uc)->uc_mcontext.eip) |
| #define UCONTEXT_STACK_PTR(uc) ((uc)->uc_mcontext.esp) |
| #define UCONTEXT_FRAME_PTR(uc) ((uc)->uc_mcontext.ebp) |
| #define UCONTEXT_SYSCALL_NUM(uc) ((uc)->uc_mcontext.eax) |
| |
| /* --------------------------------------------------------------------- |
| mmap() stuff |
| ------------------------------------------------------------------ */ |
| |
| #define PLATFORM_DO_MMAP(ret, start, length, prot, flags, fd, offset) { \ |
| UWord __args[6]; \ |
| \ |
| __args[0] = (UWord)(start); \ |
| __args[1] = (length); \ |
| __args[2] = (prot); \ |
| __args[3] = (flags); \ |
| __args[4] = (fd); \ |
| __args[5] = (offset); \ |
| \ |
| ret = VG_(do_syscall)(__NR_mmap, (UWord)(&(__args[0])) ); \ |
| } |
| |
| #define PLATFORM_GET_MMAP_ARGS(tst, a1, a2, a3, a4, a5, a6) do {\ |
| UInt *arg_block = (UInt*)PLATFORM_SYSCALL_ARG1(tst->arch); \ |
| PRE_MEM_READ( "old_mmap(args)", arg1, 6*sizeof(UWord) ); \ |
| a1 = arg_block[0]; \ |
| a2 = arg_block[1]; \ |
| a3 = arg_block[2]; \ |
| a4 = arg_block[3]; \ |
| a5 = arg_block[4]; \ |
| a6 = arg_block[5]; \ |
| } while (0) |
| |
| #endif // __X86_LINUX_CORE_PLATFORM_H |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |