/* 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 , based on linux.h. This file is part of GNU CC. GNU CC 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. GNU CC 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 GNU CC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define LINUX_DEFAULT_ELF #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); #define TARGET_OS_CPP_BUILTINS() \ do \ { \ builtin_define_std ("linux"); \ builtin_define_std ("unix"); \ builtin_define ("__gnu_linux__"); \ builtin_assert ("system=posix"); \ 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 #include #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 */