/* Definitions for Intel 386 running Linux-based GNU systems with ELF format.
- Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2004, 2005,
+ 2006, 2007 Free Software Foundation, Inc.
Contributed by Eric Youngdale.
Modified for stabs-in-ELF by H.J. Lu.
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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Output at beginning of assembler file. */
/* The .file command should always begin the output. */
frame, so we cannot allow profiling without a frame pointer. */
#undef SUBTARGET_FRAME_POINTER_REQUIRED
-#define SUBTARGET_FRAME_POINTER_REQUIRED current_function_profile
+#define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"
do \
{ \
LINUX_TARGET_OS_CPP_BUILTINS(); \
- if (flag_pic) \
- { \
- builtin_define ("__PIC__"); \
- builtin_define ("__pic__"); \
- } \
} \
while (0)
#undef CPP_SPEC
-#ifdef USE_GNULIBC_1
-#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
-#else
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
-#endif
#undef CC1_SPEC
#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
/* If ELF is the default format, we should not use /lib/elf. */
+/* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
#define LINK_EMULATION "elf_i386"
-#ifdef USE_GNULIBC_1
-# define DYNAMIC_LINKER "/lib/ld-linux.so.1"
-#else
-# define DYNAMIC_LINKER "/lib/ld-linux.so.2"
-#endif
+#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+
+#undef ASM_SPEC
+#define ASM_SPEC \
+ "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
+ %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "link_emulation", LINK_EMULATION },\
- { "dynamic_linker", DYNAMIC_LINKER }
+ { "dynamic_linker", LINUX_DYNAMIC_LINKER }
#undef LINK_SPEC
#define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \
%{!dynamic-linker:-dynamic-linker %(dynamic_linker)}} \
%{static:-static}}}"
+/* Similar to standard Linux, but adding -ffast-math support. */
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+ %{mpc32:crtprec32.o%s} \
+ %{mpc64:crtprec64.o%s} \
+ %{mpc80:crtprec80.o%s} \
+ %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
/* A C statement (sans semicolon) to output to the stdio stream
FILE the assembler definition of uninitialized global DECL named
NAME whose size is SIZE bytes and alignment is ALIGN bytes.
do { \
if ((LOG) != 0) { \
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
- else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+ else { \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+ /* Make sure that we have at least 8 byte alignment if > 8 byte \
+ alignment is preferred. */ \
+ if ((LOG) > 3 && (1 << (LOG)) > ((MAX_SKIP) + 1)) \
+ fprintf ((FILE), "\t.p2align 3\n"); \
+ } \
} \
} while (0)
#endif
-#if defined(__PIC__) && defined (USE_GNULIBC_1)
-/* This is a kludge. The i386 GNU/Linux dynamic linker needs ___brk_addr,
- __environ and atexit. We have to make sure they are in the .dynsym
- section. We do this by forcing the assembler to create undefined
- references to these symbols in the object file. */
-#undef CRT_CALL_STATIC_FUNCTION
-#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
- asm (SECTION_OP "\n\t" \
- "call " USER_LABEL_PREFIX #FUNC "\n" \
- TEXT_SECTION_ASM_OP "\n\t" \
- ".extern ___brk_addr\n\t" \
- ".type ___brk_addr,@object\n\t" \
- ".extern __environ\n\t" \
- ".type __environ,@object\n\t" \
- ".extern atexit\n\t" \
- ".type atexit,@function");
-#endif
-
/* Handle special EH pointer encodings. Absolute, pc-relative, and
indirect are handled automatically. */
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
#define CRT_GET_RFIB_DATA(BASE) \
__asm__ ("call\t.LPR%=\n" \
".LPR%=:\n\t" \
- "popl\t%0\n\t" \
+ "pop{l}\t%0\n\t" \
/* Due to a GAS bug, this cannot use EAX. That encodes \
smaller than the traditional EBX, which results in the \
offset being off by one. */ \
- "addl\t$_GLOBAL_OFFSET_TABLE_+[.-.LPR%=],%0" \
+ "add{l}\t{$_GLOBAL_OFFSET_TABLE_+[.-.LPR%=],%0" \
+ "|%0,_GLOBAL_OFFSET_TABLE_+(.-.LPR%=)}" \
: "=d"(BASE))
#endif
+/* Put all *tf routines in libgcc. */
+#undef LIBGCC2_HAS_TF_MODE
+#define LIBGCC2_HAS_TF_MODE 1
+#define LIBGCC2_TF_CEXT q
+#define TF_SIZE 113
+
#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. */
-
-#ifdef IN_LIBGCC2
-/* There's no sys/ucontext.h for some (all?) libc1, so no
- signal-turned-exceptions for them. There's also no configure-run for
- the target, so we can't check on (e.g.) HAVE_SYS_UCONTEXT_H. Using the
- target libc1 macro should be enough. */
-#if !(defined (USE_GNULIBC_1) || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 0))
-#include <signal.h>
-#include <sys/ucontext.h>
+#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
+/* This macro may be overridden in i386/k*bsd-gnu.h. */
#define REG_NAME(reg) reg
-#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_->REG_NAME(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_->REG_NAME(eax) - new_cfa_; \
- (FS)->regs.reg[3].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[3].loc.offset = (long)&sc_->REG_NAME(ebx) - new_cfa_; \
- (FS)->regs.reg[1].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[1].loc.offset = (long)&sc_->REG_NAME(ecx) - new_cfa_; \
- (FS)->regs.reg[2].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[2].loc.offset = (long)&sc_->REG_NAME(edx) - new_cfa_; \
- (FS)->regs.reg[6].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[6].loc.offset = (long)&sc_->REG_NAME(esi) - new_cfa_; \
- (FS)->regs.reg[7].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[7].loc.offset = (long)&sc_->REG_NAME(edi) - new_cfa_; \
- (FS)->regs.reg[5].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[5].loc.offset = (long)&sc_->REG_NAME(ebp) - new_cfa_; \
- (FS)->regs.reg[8].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[8].loc.offset = (long)&sc_->REG_NAME(eip) - new_cfa_; \
- (FS)->retaddr_column = 8; \
- goto SUCCESS; \
- } while (0)
-#endif /* not USE_GNULIBC_1 */
-#endif /* IN_LIBGCC2 */
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* i386 glibc provides __stack_chk_guard in %gs:0x14. */
+#define TARGET_THREAD_SSP_OFFSET 0x14
+#endif
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