| /* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format. |
| Copyright (C) 2001, 2002 Free Software Foundation, Inc. |
| Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h. |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) |
| any later version. |
| |
| GCC 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 GCC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); |
| |
| #define TARGET_OS_CPP_BUILTINS() \ |
| do \ |
| { \ |
| LINUX_TARGET_OS_CPP_BUILTINS(); \ |
| if (flag_pic) \ |
| { \ |
| builtin_define ("__PIC__"); \ |
| builtin_define ("__pic__"); \ |
| } \ |
| } \ |
| while (0) |
| |
| #undef CPP_SPEC |
| #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" |
| |
| /* The svr4 ABI for the i386 says that records and unions are returned |
| in memory. In the 64bit compilation we will turn this flag off in |
| override_options, as we never do pcc_struct_return scheme on this target. */ |
| #undef DEFAULT_PCC_STRUCT_RETURN |
| #define DEFAULT_PCC_STRUCT_RETURN 1 |
| |
| /* We arrange for the whole %fs segment to map the tls area. */ |
| #undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT |
| #define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS |
| |
| /* Provide a LINK_SPEC. Here we provide support for the special GCC |
| options -static and -shared, which allow us to link things in one |
| of these three modes by applying the appropriate combinations of |
| options at link-time. |
| |
| When the -shared link option is used a final link is not being |
| done. */ |
| |
| #undef LINK_SPEC |
| #define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} \ |
| %{shared:-shared} \ |
| %{!shared: \ |
| %{!static: \ |
| %{rdynamic:-export-dynamic} \ |
| %{m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \ |
| %{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \ |
| %{static:-static}}" |
| |
| #define MULTILIB_DEFAULTS { "m64" } |
| |
| #undef NEED_INDICATE_EXEC_STACK |
| #define NEED_INDICATE_EXEC_STACK 1 |
| |
| /* Do code reading to identify a signal frame, and set the frame |
| state data appropriately. See unwind-dw2.c for the structs. |
| Don't use this at all if inhibit_libc is used. */ |
| |
| #ifndef inhibit_libc |
| #ifdef IN_LIBGCC2 |
| #include <signal.h> |
| #include <sys/ucontext.h> |
| #endif |
| |
| #ifdef __x86_64__ |
| #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ |
| do { \ |
| unsigned char *pc_ = (CONTEXT)->ra; \ |
| struct sigcontext *sc_; \ |
| long new_cfa_; \ |
| \ |
| /* movq __NR_rt_sigreturn, %rax ; syscall */ \ |
| if (*(unsigned char *)(pc_+0) == 0x48 \ |
| && *(unsigned long *)(pc_+1) == 0x050f0000000fc0c7) \ |
| { \ |
| struct ucontext *uc_ = (CONTEXT)->cfa; \ |
| sc_ = (struct sigcontext *) &uc_->uc_mcontext; \ |
| } \ |
| else \ |
| break; \ |
| \ |
| new_cfa_ = sc_->rsp; \ |
| (FS)->cfa_how = CFA_REG_OFFSET; \ |
| /* Register 7 is rsp */ \ |
| (FS)->cfa_reg = 7; \ |
| (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ |
| \ |
| /* The SVR4 register numbering macros aren't usable in libgcc. */ \ |
| (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[0].loc.offset = (long)&sc_->rax - new_cfa_; \ |
| (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[1].loc.offset = (long)&sc_->rdx - new_cfa_; \ |
| (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[2].loc.offset = (long)&sc_->rcx - new_cfa_; \ |
| (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[3].loc.offset = (long)&sc_->rbx - new_cfa_; \ |
| (FS)->regs.reg[4].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[4].loc.offset = (long)&sc_->rsi - new_cfa_; \ |
| (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[5].loc.offset = (long)&sc_->rdi - new_cfa_; \ |
| (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[6].loc.offset = (long)&sc_->rbp - new_cfa_; \ |
| (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[8].loc.offset = (long)&sc_->r8 - new_cfa_; \ |
| (FS)->regs.reg[9].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[9].loc.offset = (long)&sc_->r9 - new_cfa_; \ |
| (FS)->regs.reg[10].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[10].loc.offset = (long)&sc_->r10 - new_cfa_; \ |
| (FS)->regs.reg[11].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[11].loc.offset = (long)&sc_->r11 - new_cfa_; \ |
| (FS)->regs.reg[12].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[12].loc.offset = (long)&sc_->r12 - new_cfa_; \ |
| (FS)->regs.reg[13].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[13].loc.offset = (long)&sc_->r13 - new_cfa_; \ |
| (FS)->regs.reg[14].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[14].loc.offset = (long)&sc_->r14 - new_cfa_; \ |
| (FS)->regs.reg[15].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[15].loc.offset = (long)&sc_->r15 - new_cfa_; \ |
| (FS)->regs.reg[16].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[16].loc.offset = (long)&sc_->rip - new_cfa_; \ |
| (FS)->retaddr_column = 16; \ |
| goto SUCCESS; \ |
| } while (0) |
| #else /* ifdef __x86_64__ */ |
| #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ |
| do { \ |
| unsigned char *pc_ = (CONTEXT)->ra; \ |
| struct sigcontext *sc_; \ |
| long new_cfa_; \ |
| \ |
| /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80 */ \ |
| if (*(unsigned short *)(pc_+0) == 0xb858 \ |
| && *(unsigned int *)(pc_+2) == 119 \ |
| && *(unsigned short *)(pc_+6) == 0x80cd) \ |
| sc_ = (CONTEXT)->cfa + 4; \ |
| /* movl $__NR_rt_sigreturn,%eax ; int $0x80 */ \ |
| else if (*(unsigned char *)(pc_+0) == 0xb8 \ |
| && *(unsigned int *)(pc_+1) == 173 \ |
| && *(unsigned short *)(pc_+5) == 0x80cd) \ |
| { \ |
| struct rt_sigframe { \ |
| int sig; \ |
| struct siginfo *pinfo; \ |
| void *puc; \ |
| struct siginfo info; \ |
| struct ucontext uc; \ |
| } *rt_ = (CONTEXT)->cfa; \ |
| sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext; \ |
| } \ |
| else \ |
| break; \ |
| \ |
| new_cfa_ = sc_->esp; \ |
| (FS)->cfa_how = CFA_REG_OFFSET; \ |
| (FS)->cfa_reg = 4; \ |
| (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ |
| \ |
| /* The SVR4 register numbering macros aren't usable in libgcc. */ \ |
| (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[0].loc.offset = (long)&sc_->eax - new_cfa_; \ |
| (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[3].loc.offset = (long)&sc_->ebx - new_cfa_; \ |
| (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[1].loc.offset = (long)&sc_->ecx - new_cfa_; \ |
| (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[2].loc.offset = (long)&sc_->edx - new_cfa_; \ |
| (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[6].loc.offset = (long)&sc_->esi - new_cfa_; \ |
| (FS)->regs.reg[7].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[7].loc.offset = (long)&sc_->edi - new_cfa_; \ |
| (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[5].loc.offset = (long)&sc_->ebp - new_cfa_; \ |
| (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \ |
| (FS)->regs.reg[8].loc.offset = (long)&sc_->eip - new_cfa_; \ |
| (FS)->retaddr_column = 8; \ |
| goto SUCCESS; \ |
| } while (0) |
| #endif /* ifdef __x86_64__ */ |
| #endif /* ifdef inhibit_libc */ |
