+2012-09-02 Mark Kettenis <kettenis@openbsd.org>
+
+ * config.gcc (x86_64-*-openbsd*): New target.
+ * config.host (*-*-openbsd*): New target.
+ * config/openbsd.h (TARGET_C99_FUNCTIONS): Define.
+ * config/i386/openbsdelf.h: Remove some superfluous defines and
+ group things together in a more logical fashion.
+ (DBX_REGISTER_NUMBER): Provide a
+ definition that works on both 32-bit and 64-bit targets.
+ (WCHAR_TYPE_SIZE): Hardcode as 32.
+ (NO_DOLLAR_IN_LABEL): Remove undef.
+ (TARGET_DEFAULT): Remove.
+ (SET_ASM_OP): Remove.
+ (DEFAULT_PCC_STRUCT_RETURN): Undef first to prevent warning.
+ (ASM_OUTPUT_MAX_SKIP_ALIGN): Synch with x86-64.h
+ (DWARF2_UNWIND_INFO): Remove define.
+ (HAVE_ENABLE_EXECUTE_STACK): Define.
+ * config/host-openbsd.c: New file.
+ * config/t-openbsd (USER_H): Add EXTRA_HEADERS.
+ * config/x-openbsd: New file.
+
2012-09-02 Oleg Endo <olegendo@gcc.gnu.org>
* config/sh/sh.md (*extend<mode>si2_compact_mem_disp): Pass iterated
--- /dev/null
+/* OpenBSD host-specific hook definitions.
+ Copyright (C) 2004, 2007, 2008, 2010, 2011 Free Software Foundation, Inc.
+
+ 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 3, 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 COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "hosthooks.h"
+#include "hosthooks-def.h"
+
+
+#undef HOST_HOOKS_GT_PCH_GET_ADDRESS
+#define HOST_HOOKS_GT_PCH_GET_ADDRESS openbsd_gt_pch_get_address
+#undef HOST_HOOKS_GT_PCH_USE_ADDRESS
+#define HOST_HOOKS_GT_PCH_USE_ADDRESS openbsd_gt_pch_use_address
+
+/* For various ports, try to guess a fixed spot in the vm space
+ that's probably free. */
+#if defined(__amd64__)
+# define TRY_EMPTY_VM_SPACE 0x400000000000
+#elif defined(__i386__)
+# define TRY_EMPTY_VM_SPACE 0xb0000000
+#else
+# define TRY_EMPTY_VM_SPACE 0
+#endif
+
+/* Determine a location where we might be able to reliably allocate
+ SIZE bytes. FD is the PCH file, though we should return with the
+ file unmapped. */
+
+static void *
+openbsd_gt_pch_get_address (size_t size, int fd)
+{
+ void *addr;
+
+ addr = mmap ((void *) TRY_EMPTY_VM_SPACE, size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE, fd, 0);
+
+ /* If we failed the map, that means there's *no* free space. */
+ if (addr == (void *) MAP_FAILED)
+ return NULL;
+ /* Unmap the area before returning. */
+ munmap (addr, size);
+
+ return addr;
+}
+
+/* Map SIZE bytes of FD+OFFSET at BASE. Return 1 if we succeeded at
+ mapping the data at BASE, -1 if we couldn't. */
+
+static int
+openbsd_gt_pch_use_address (void *base, size_t size, int fd, size_t offset)
+{
+ void *addr;
+
+ /* We're called with size == 0 if we're not planning to load a PCH
+ file at all. This allows the hook to free any static space that
+ we might have allocated at link time. */
+ if (size == 0)
+ return -1;
+
+ addr = mmap (base, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, offset);
+
+ return addr == base ? 1 : -1;
+}
+
+\f
+const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
-/* This keeps us from using libraries compiled with the native cc, so
- undef it. */
-#undef NO_DOLLAR_IN_LABEL
-
-/* Override the default comment-starter of "/". */
-#undef ASM_COMMENT_START
-#define ASM_COMMENT_START "#"
-
-#undef DBX_REGISTER_NUMBER
-#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
-
-/* This goes away when the math-emulator is fixed */
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT \
- (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_NO_FANCY_MATH_387)
-
-/* Run-time target specifications */
-
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
} \
while (0)
-/* As an elf system, we need crtbegin/crtend stuff. */
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "\
- %{!shared: %{pg:gcrt0%O%s} %{!pg:%{p:gcrt0%O%s} %{!p:crt0%O%s}} \
- crtbegin%O%s} %{shared:crtbeginS%O%s}"
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
-
-/* Layout of source language data types. */
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+ (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
-/* This must agree with <machine/ansi.h> */
+/* This must agree with <machine/_types.h>. */
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE BITS_PER_WORD
+#define WCHAR_TYPE_SIZE 32
#undef WINT_TYPE
#define WINT_TYPE "int"
-/* Assembler format: overall framework. */
+/* Don't default to pcc-struct-return, because gcc is the only compiler, and
+ we want to retain compatibility with older gcc versions. */
+
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* Override the default comment-starter of "/". */
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START "#"
#undef ASM_APP_ON
#define ASM_APP_ON "#APP\n"
#undef ASM_APP_OFF
#define ASM_APP_OFF "#NO_APP\n"
-#undef SET_ASM_OP
-#define SET_ASM_OP "\t.set\t"
-
-/* The following macros were originally stolen from i386v4.h.
- These have to be defined to get PIC code correct. */
-
-/* Assembler format: dispatch tables. */
-
-/* Assembler format: sections. */
-
-/* Stack & calling: aggregate returns. */
-
-/* Don't default to pcc-struct-return, because gcc is the only compiler, and
- we want to retain compatibility with older gcc versions. */
-#define DEFAULT_PCC_STRUCT_RETURN 0
+/* A C statement to output to the stdio stream FILE an assembler
+ command to advance the location counter to a multiple of 1<<LOG
+ bytes if it is within MAX_SKIP bytes.
-/* Assembler format: alignment output. */
+ This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
-#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
- 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)); \
- }
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
+ 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)); \
+ /* Make sure that we have at least 8 byte alignment if > 8 byte \
+ alignment is preferred. */ \
+ if ((LOG) > 3 \
+ && (1 << (LOG)) > ((MAX_SKIP) + 1) \
+ && (MAX_SKIP) >= 7) \
+ fputs ("\t.p2align 3\n", (FILE)); \
+ } \
+ } \
+ } while (0)
#endif
-/* Stack & calling: profiling. */
-
/* OpenBSD's profiler recovers all information from the stack pointer.
- The icky part is not here, but in machine/profile.h. */
+ The icky part is not here, but in <machine/profile.h>. */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
fputs (flag_pic ? "\tcall __mcount@PLT\n": "\tcall __mcount\n", FILE);
-/* Assembler format: exception region output. */
-
-/* our configuration still doesn't handle dwarf2 correctly */
-#define DWARF2_UNWIND_INFO 0
-
-/* Assembler format: alignment output. */
-
-/* Note that we pick up ASM_OUTPUT_MAX_SKIP_ALIGN from i386/gas.h */
-
-/* Note that we pick up ASM_OUTPUT_MI_THUNK from unix.h. */
-
#undef LINK_SPEC
#define LINK_SPEC \
"%{!shared:%{!nostdlib:%{!r:%{!e*:-e __start}}}} \
%{assert*} \
-dynamic-linker /usr/libexec/ld.so"
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "\
+ %{!shared: %{pg:gcrt0%O%s} %{!pg:%{p:gcrt0%O%s} %{!p:crt0%O%s}} \
+ crtbegin%O%s} %{shared:crtbeginS%O%s}"
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
+
#define OBSD_HAS_CORRECT_SPECS
+
+#define HAVE_ENABLE_EXECUTE_STACK
projects / platform / upstream / linaro-gcc.git / commitdiff