linux64.h revision 107590
190075Sobrien/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format. 296263Sobrien Copyright (C) 2001, 2002 Free Software Foundation, Inc. 390075Sobrien Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h. 490075Sobrien 590075SobrienThis file is part of GNU CC. 690075Sobrien 790075SobrienGNU CC is free software; you can redistribute it and/or modify 890075Sobrienit under the terms of the GNU General Public License as published by 990075Sobrienthe Free Software Foundation; either version 2, or (at your option) 1090075Sobrienany later version. 1190075Sobrien 1290075SobrienGNU CC is distributed in the hope that it will be useful, 1390075Sobrienbut WITHOUT ANY WARRANTY; without even the implied warranty of 1490075SobrienMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1590075SobrienGNU General Public License for more details. 1690075Sobrien 1790075SobrienYou should have received a copy of the GNU General Public License 1890075Sobrienalong with GNU CC; see the file COPYING. If not, write to 1990075Sobrienthe Free Software Foundation, 59 Temple Place - Suite 330, 2090075SobrienBoston, MA 02111-1307, USA. */ 2190075Sobrien 2290075Sobrien#define LINUX_DEFAULT_ELF 2390075Sobrien 2490075Sobrien#undef TARGET_VERSION 2590075Sobrien#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); 2690075Sobrien 2790075Sobrien#undef CPP_PREDEFINES 2896263Sobrien#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -Asystem(posix)" 2990075Sobrien 3090075Sobrien#undef CPP_SPEC 3190075Sobrien#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT} %{!m32:-D__LONG_MAX__=9223372036854775807L}" 3290075Sobrien 33107590Sobrien/* The svr4 ABI for the i386 says that records and unions are returned 34107590Sobrien in memory. In the 64bit compilation we will turn this flag off in 35107590Sobrien override_options, as we never do pcc_struct_return scheme on this target. */ 36107590Sobrien#undef DEFAULT_PCC_STRUCT_RETURN 37107590Sobrien#define DEFAULT_PCC_STRUCT_RETURN 1 38107590Sobrien 3990075Sobrien/* Provide a LINK_SPEC. Here we provide support for the special GCC 4090075Sobrien options -static and -shared, which allow us to link things in one 4190075Sobrien of these three modes by applying the appropriate combinations of 4290075Sobrien options at link-time. 4390075Sobrien 4490075Sobrien When the -shared link option is used a final link is not being 4590075Sobrien done. */ 4690075Sobrien 4790075Sobrien#undef LINK_SPEC 4896263Sobrien#define LINK_SPEC "%{!m32:-m elf_x86_64 -Y P,/usr/lib64} %{m32:-m elf_i386} \ 4996263Sobrien %{shared:-shared} \ 5090075Sobrien %{!shared: \ 5190075Sobrien %{!static: \ 5290075Sobrien %{rdynamic:-export-dynamic} \ 5396263Sobrien %{m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \ 5496263Sobrien %{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \ 5596263Sobrien %{static:-static}}" 5690075Sobrien 5796263Sobrien#undef STARTFILE_SPEC 5896263Sobrien#define STARTFILE_SPEC \ 59104752Skan "%{!shared: \ 60104752Skan %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \ 61104752Skan %{!p:%{profile:gcrt1.o%s} %{!profile:crt1.o%s}}}} \ 62104752Skan crti.o%s %{static:crtbeginT.o%s} \ 63104752Skan %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}" 6496263Sobrien 6596263Sobrien#undef ENDFILE_SPEC 66104752Skan#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" 6796263Sobrien 6896263Sobrien#define MULTILIB_DEFAULTS { "m64" } 6996263Sobrien 7096263Sobrien/* Do code reading to identify a signal frame, and set the frame 71102780Skan state data appropriately. See unwind-dw2.c for the structs. 72102780Skan Don't use this at all if inhibit_libc is used. */ 7396263Sobrien 74102780Skan#ifndef inhibit_libc 7596263Sobrien#ifdef IN_LIBGCC2 7696263Sobrien#include <signal.h> 7796263Sobrien#include <sys/ucontext.h> 7896263Sobrien#endif 7996263Sobrien 80102780Skan#ifdef __x86_64__ 8196263Sobrien#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ 8296263Sobrien do { \ 8396263Sobrien unsigned char *pc_ = (CONTEXT)->ra; \ 8496263Sobrien struct sigcontext *sc_; \ 8596263Sobrien long new_cfa_; \ 8696263Sobrien \ 8796263Sobrien /* movq __NR_rt_sigreturn, %rax ; syscall */ \ 8896263Sobrien if (*(unsigned char *)(pc_+0) == 0x48 \ 8996263Sobrien && *(unsigned long *)(pc_+1) == 0x050f0000000fc0c7) \ 9096263Sobrien { \ 9196263Sobrien struct ucontext *uc_ = (CONTEXT)->cfa; \ 9296263Sobrien sc_ = (struct sigcontext *) &uc_->uc_mcontext; \ 9396263Sobrien } \ 9496263Sobrien else \ 9596263Sobrien break; \ 9696263Sobrien \ 9796263Sobrien new_cfa_ = sc_->rsp; \ 9896263Sobrien (FS)->cfa_how = CFA_REG_OFFSET; \ 9996263Sobrien /* Register 7 is rsp */ \ 10096263Sobrien (FS)->cfa_reg = 7; \ 10196263Sobrien (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ 10296263Sobrien \ 10396263Sobrien /* The SVR4 register numbering macros aren't usable in libgcc. */ \ 10496263Sobrien (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \ 10596263Sobrien (FS)->regs.reg[0].loc.offset = (long)&sc_->rax - new_cfa_; \ 10696263Sobrien (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \ 10796263Sobrien (FS)->regs.reg[1].loc.offset = (long)&sc_->rbx - new_cfa_; \ 10896263Sobrien (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \ 10996263Sobrien (FS)->regs.reg[2].loc.offset = (long)&sc_->rcx - new_cfa_; \ 11096263Sobrien (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \ 11196263Sobrien (FS)->regs.reg[3].loc.offset = (long)&sc_->rdx - new_cfa_; \ 11296263Sobrien (FS)->regs.reg[4].how = REG_SAVED_OFFSET; \ 11396263Sobrien (FS)->regs.reg[4].loc.offset = (long)&sc_->rbp - new_cfa_; \ 11496263Sobrien (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \ 11596263Sobrien (FS)->regs.reg[5].loc.offset = (long)&sc_->rsi - new_cfa_; \ 11696263Sobrien (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \ 11796263Sobrien (FS)->regs.reg[6].loc.offset = (long)&sc_->rdi - new_cfa_; \ 11896263Sobrien (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \ 11996263Sobrien (FS)->regs.reg[8].loc.offset = (long)&sc_->r8 - new_cfa_; \ 12096263Sobrien (FS)->regs.reg[9].how = REG_SAVED_OFFSET; \ 12196263Sobrien (FS)->regs.reg[9].loc.offset = (long)&sc_->r9 - new_cfa_; \ 12296263Sobrien (FS)->regs.reg[10].how = REG_SAVED_OFFSET; \ 12396263Sobrien (FS)->regs.reg[10].loc.offset = (long)&sc_->r10 - new_cfa_; \ 12496263Sobrien (FS)->regs.reg[11].how = REG_SAVED_OFFSET; \ 12596263Sobrien (FS)->regs.reg[11].loc.offset = (long)&sc_->r11 - new_cfa_; \ 12696263Sobrien (FS)->regs.reg[12].how = REG_SAVED_OFFSET; \ 12796263Sobrien (FS)->regs.reg[12].loc.offset = (long)&sc_->r12 - new_cfa_; \ 12896263Sobrien (FS)->regs.reg[13].how = REG_SAVED_OFFSET; \ 12996263Sobrien (FS)->regs.reg[13].loc.offset = (long)&sc_->r13 - new_cfa_; \ 13096263Sobrien (FS)->regs.reg[14].how = REG_SAVED_OFFSET; \ 13196263Sobrien (FS)->regs.reg[14].loc.offset = (long)&sc_->r14 - new_cfa_; \ 13296263Sobrien (FS)->regs.reg[15].how = REG_SAVED_OFFSET; \ 13396263Sobrien (FS)->regs.reg[15].loc.offset = (long)&sc_->r15 - new_cfa_; \ 13496263Sobrien (FS)->retaddr_column = 16; \ 13596263Sobrien goto SUCCESS; \ 13696263Sobrien } while (0) 137102780Skan#else /* ifdef __x86_64__ */ 138102780Skan#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ 139102780Skan do { \ 140102780Skan unsigned char *pc_ = (CONTEXT)->ra; \ 141102780Skan struct sigcontext *sc_; \ 142102780Skan long new_cfa_; \ 143102780Skan \ 144102780Skan /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80 */ \ 145102780Skan if (*(unsigned short *)(pc_+0) == 0xb858 \ 146102780Skan && *(unsigned int *)(pc_+2) == 119 \ 147102780Skan && *(unsigned short *)(pc_+6) == 0x80cd) \ 148102780Skan sc_ = (CONTEXT)->cfa + 4; \ 149102780Skan /* movl $__NR_rt_sigreturn,%eax ; int $0x80 */ \ 150102780Skan else if (*(unsigned char *)(pc_+0) == 0xb8 \ 151102780Skan && *(unsigned int *)(pc_+1) == 173 \ 152102780Skan && *(unsigned short *)(pc_+5) == 0x80cd) \ 153102780Skan { \ 154102780Skan struct rt_sigframe { \ 155102780Skan int sig; \ 156102780Skan struct siginfo *pinfo; \ 157102780Skan void *puc; \ 158102780Skan struct siginfo info; \ 159102780Skan struct ucontext uc; \ 160102780Skan } *rt_ = (CONTEXT)->cfa; \ 161102780Skan sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext; \ 162102780Skan } \ 163102780Skan else \ 164102780Skan break; \ 165102780Skan \ 166102780Skan new_cfa_ = sc_->esp; \ 167102780Skan (FS)->cfa_how = CFA_REG_OFFSET; \ 168102780Skan (FS)->cfa_reg = 4; \ 169102780Skan (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ 170102780Skan \ 171102780Skan /* The SVR4 register numbering macros aren't usable in libgcc. */ \ 172102780Skan (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \ 173102780Skan (FS)->regs.reg[0].loc.offset = (long)&sc_->eax - new_cfa_; \ 174102780Skan (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \ 175102780Skan (FS)->regs.reg[3].loc.offset = (long)&sc_->ebx - new_cfa_; \ 176102780Skan (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \ 177102780Skan (FS)->regs.reg[1].loc.offset = (long)&sc_->ecx - new_cfa_; \ 178102780Skan (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \ 179102780Skan (FS)->regs.reg[2].loc.offset = (long)&sc_->edx - new_cfa_; \ 180102780Skan (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \ 181102780Skan (FS)->regs.reg[6].loc.offset = (long)&sc_->esi - new_cfa_; \ 182102780Skan (FS)->regs.reg[7].how = REG_SAVED_OFFSET; \ 183102780Skan (FS)->regs.reg[7].loc.offset = (long)&sc_->edi - new_cfa_; \ 184102780Skan (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \ 185102780Skan (FS)->regs.reg[5].loc.offset = (long)&sc_->ebp - new_cfa_; \ 186102780Skan (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \ 187102780Skan (FS)->regs.reg[8].loc.offset = (long)&sc_->eip - new_cfa_; \ 188102780Skan (FS)->retaddr_column = 8; \ 189102780Skan goto SUCCESS; \ 190102780Skan } while (0) 191102780Skan#endif /* ifdef __x86_64__ */ 192102780Skan#endif /* ifdef inhibit_libc */ 193