1 /* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.
2 Copyright (C) 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #define LINUX_DEFAULT_ELF
24 #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
26 #define TARGET_OS_CPP_BUILTINS() \
29 builtin_define_std ("linux"); \
30 builtin_define_std ("unix"); \
31 builtin_define ("__gnu_linux__"); \
32 builtin_define ("__ELF__"); \
33 builtin_assert ("system=posix"); \
36 builtin_define ("__PIC__"); \
37 builtin_define ("__pic__"); \
43 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
45 /* The svr4 ABI for the i386 says that records and unions are returned
46 in memory. In the 64bit compilation we will turn this flag off in
47 override_options, as we never do pcc_struct_return scheme on this target. */
48 #undef DEFAULT_PCC_STRUCT_RETURN
49 #define DEFAULT_PCC_STRUCT_RETURN 1
51 /* Provide a LINK_SPEC. Here we provide support for the special GCC
52 options -static and -shared, which allow us to link things in one
53 of these three modes by applying the appropriate combinations of
56 When the -shared link option is used a final link is not being
60 #define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} \
64 %{rdynamic:-export-dynamic} \
65 %{m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
66 %{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \
70 #define STARTFILE_SPEC \
72 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
73 %{!p:%{profile:gcrt1.o%s} %{!profile:crt1.o%s}}}} \
74 crti.o%s %{static:crtbeginT.o%s} \
75 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
78 #define ENDFILE_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
80 #define MULTILIB_DEFAULTS { "m64" }
82 /* Do code reading to identify a signal frame, and set the frame
83 state data appropriately. See unwind-dw2.c for the structs.
84 Don't use this at all if inhibit_libc is used. */
89 #include <sys/ucontext.h>
93 #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
95 unsigned char *pc_ = (CONTEXT)->ra; \
96 struct sigcontext *sc_; \
99 /* movq __NR_rt_sigreturn, %rax ; syscall */ \
100 if (*(unsigned char *)(pc_+0) == 0x48 \
101 && *(unsigned long *)(pc_+1) == 0x050f0000000fc0c7) \
103 struct ucontext *uc_ = (CONTEXT)->cfa; \
104 sc_ = (struct sigcontext *) &uc_->uc_mcontext; \
109 new_cfa_ = sc_->rsp; \
110 (FS)->cfa_how = CFA_REG_OFFSET; \
111 /* Register 7 is rsp */ \
113 (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
115 /* The SVR4 register numbering macros aren't usable in libgcc. */ \
116 (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
117 (FS)->regs.reg[0].loc.offset = (long)&sc_->rax - new_cfa_; \
118 (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \
119 (FS)->regs.reg[1].loc.offset = (long)&sc_->rbx - new_cfa_; \
120 (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \
121 (FS)->regs.reg[2].loc.offset = (long)&sc_->rcx - new_cfa_; \
122 (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \
123 (FS)->regs.reg[3].loc.offset = (long)&sc_->rdx - new_cfa_; \
124 (FS)->regs.reg[4].how = REG_SAVED_OFFSET; \
125 (FS)->regs.reg[4].loc.offset = (long)&sc_->rbp - new_cfa_; \
126 (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \
127 (FS)->regs.reg[5].loc.offset = (long)&sc_->rsi - new_cfa_; \
128 (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \
129 (FS)->regs.reg[6].loc.offset = (long)&sc_->rdi - new_cfa_; \
130 (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \
131 (FS)->regs.reg[8].loc.offset = (long)&sc_->r8 - new_cfa_; \
132 (FS)->regs.reg[9].how = REG_SAVED_OFFSET; \
133 (FS)->regs.reg[9].loc.offset = (long)&sc_->r9 - new_cfa_; \
134 (FS)->regs.reg[10].how = REG_SAVED_OFFSET; \
135 (FS)->regs.reg[10].loc.offset = (long)&sc_->r10 - new_cfa_; \
136 (FS)->regs.reg[11].how = REG_SAVED_OFFSET; \
137 (FS)->regs.reg[11].loc.offset = (long)&sc_->r11 - new_cfa_; \
138 (FS)->regs.reg[12].how = REG_SAVED_OFFSET; \
139 (FS)->regs.reg[12].loc.offset = (long)&sc_->r12 - new_cfa_; \
140 (FS)->regs.reg[13].how = REG_SAVED_OFFSET; \
141 (FS)->regs.reg[13].loc.offset = (long)&sc_->r13 - new_cfa_; \
142 (FS)->regs.reg[14].how = REG_SAVED_OFFSET; \
143 (FS)->regs.reg[14].loc.offset = (long)&sc_->r14 - new_cfa_; \
144 (FS)->regs.reg[15].how = REG_SAVED_OFFSET; \
145 (FS)->regs.reg[15].loc.offset = (long)&sc_->r15 - new_cfa_; \
146 (FS)->retaddr_column = 16; \
149 #else /* ifdef __x86_64__ */
150 #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
152 unsigned char *pc_ = (CONTEXT)->ra; \
153 struct sigcontext *sc_; \
156 /* popl %eax ; movl $__NR_sigreturn,%eax ; int $0x80 */ \
157 if (*(unsigned short *)(pc_+0) == 0xb858 \
158 && *(unsigned int *)(pc_+2) == 119 \
159 && *(unsigned short *)(pc_+6) == 0x80cd) \
160 sc_ = (CONTEXT)->cfa + 4; \
161 /* movl $__NR_rt_sigreturn,%eax ; int $0x80 */ \
162 else if (*(unsigned char *)(pc_+0) == 0xb8 \
163 && *(unsigned int *)(pc_+1) == 173 \
164 && *(unsigned short *)(pc_+5) == 0x80cd) \
166 struct rt_sigframe { \
168 struct siginfo *pinfo; \
170 struct siginfo info; \
171 struct ucontext uc; \
172 } *rt_ = (CONTEXT)->cfa; \
173 sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext; \
178 new_cfa_ = sc_->esp; \
179 (FS)->cfa_how = CFA_REG_OFFSET; \
181 (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
183 /* The SVR4 register numbering macros aren't usable in libgcc. */ \
184 (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
185 (FS)->regs.reg[0].loc.offset = (long)&sc_->eax - new_cfa_; \
186 (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \
187 (FS)->regs.reg[3].loc.offset = (long)&sc_->ebx - new_cfa_; \
188 (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \
189 (FS)->regs.reg[1].loc.offset = (long)&sc_->ecx - new_cfa_; \
190 (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \
191 (FS)->regs.reg[2].loc.offset = (long)&sc_->edx - new_cfa_; \
192 (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \
193 (FS)->regs.reg[6].loc.offset = (long)&sc_->esi - new_cfa_; \
194 (FS)->regs.reg[7].how = REG_SAVED_OFFSET; \
195 (FS)->regs.reg[7].loc.offset = (long)&sc_->edi - new_cfa_; \
196 (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \
197 (FS)->regs.reg[5].loc.offset = (long)&sc_->ebp - new_cfa_; \
198 (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \
199 (FS)->regs.reg[8].loc.offset = (long)&sc_->eip - new_cfa_; \
200 (FS)->retaddr_column = 8; \
203 #endif /* ifdef __x86_64__ */
204 #endif /* ifdef inhibit_libc */