diff options
Diffstat (limited to 'libguile/objcodes.c')
-rw-r--r-- | libguile/objcodes.c | 45 |
1 files changed, 13 insertions, 32 deletions
diff --git a/libguile/objcodes.c b/libguile/objcodes.c index 91691a70a..5466ecc2c 100644 --- a/libguile/objcodes.c +++ b/libguile/objcodes.c @@ -28,33 +28,14 @@ #include <sys/types.h> #include <assert.h> -#include <verify.h> - #include "_scm.h" #include "vm-bootstrap.h" #include "programs.h" #include "objcodes.h" -/* The endianness marker in objcode. */ -#ifdef WORDS_BIGENDIAN -# define OBJCODE_ENDIANNESS "BE" -#else -# define OBJCODE_ENDIANNESS "LE" -#endif - -#define _OBJCODE_STRINGIFY(x) # x -#define OBJCODE_STRINGIFY(x) _OBJCODE_STRINGIFY (x) - -/* The word size marker in objcode. */ -#define OBJCODE_WORD_SIZE OBJCODE_STRINGIFY (SIZEOF_VOID_P) - -/* The objcode magic header. */ -#define OBJCODE_COOKIE \ - "GOOF-0.9-" OBJCODE_ENDIANNESS "-" OBJCODE_WORD_SIZE "---" - +/* SCM_OBJCODE_COOKIE is defined in _scm.h */ /* The length of the header must be a multiple of 8 bytes. */ -verify (((sizeof (OBJCODE_COOKIE) - 1) & 7) == 0); - +verify (((sizeof (SCM_OBJCODE_COOKIE) - 1) & 7) == 0); /* @@ -77,7 +58,7 @@ make_objcode_by_mmap (int fd) if (ret < 0) SCM_SYSERROR; - if (st.st_size <= sizeof (struct scm_objcode) + strlen (OBJCODE_COOKIE)) + if (st.st_size <= sizeof (struct scm_objcode) + strlen (SCM_OBJCODE_COOKIE)) scm_misc_error (FUNC_NAME, "object file too small (~a bytes)", scm_list_1 (SCM_I_MAKINUM (st.st_size))); @@ -88,18 +69,18 @@ make_objcode_by_mmap (int fd) SCM_SYSERROR; } - if (memcmp (addr, OBJCODE_COOKIE, strlen (OBJCODE_COOKIE))) + if (memcmp (addr, SCM_OBJCODE_COOKIE, strlen (SCM_OBJCODE_COOKIE))) { SCM args = scm_list_1 (scm_from_locale_stringn - (addr, strlen (OBJCODE_COOKIE))); + (addr, strlen (SCM_OBJCODE_COOKIE))); (void) close (fd); (void) munmap (addr, st.st_size); scm_misc_error (FUNC_NAME, "bad header on object file: ~s", args); } - data = (struct scm_objcode*)(addr + strlen (OBJCODE_COOKIE)); + data = (struct scm_objcode*)(addr + strlen (SCM_OBJCODE_COOKIE)); - if (data->len + data->metalen != (st.st_size - sizeof (*data) - strlen (OBJCODE_COOKIE))) + if (data->len + data->metalen != (st.st_size - sizeof (*data) - strlen (SCM_OBJCODE_COOKIE))) { (void) close (fd); (void) munmap (addr, st.st_size); @@ -109,7 +90,7 @@ make_objcode_by_mmap (int fd) + data->metalen))); } - SCM_NEWSMOB3 (sret, scm_tc16_objcode, addr + strlen (OBJCODE_COOKIE), + SCM_NEWSMOB3 (sret, scm_tc16_objcode, addr + strlen (SCM_OBJCODE_COOKIE), SCM_PACK (SCM_BOOL_F), fd); SCM_SET_SMOB_FLAGS (sret, SCM_F_OBJCODE_IS_MMAP); @@ -138,10 +119,10 @@ scm_c_make_objcode_slice (SCM parent, const scm_t_uint8 *ptr) scm_from_uint32 (parent_data->len), scm_from_uint32 (parent_data->metalen))); -#if 0 - /* FIXME: We currently generate bytecode where the objcode-meta isn't - suitable aligned, which is an issue on some arches (e.g., SPARC). */ - assert ((((uintptr_t) ptr) & (__alignof__ (struct scm_objcode) - 1UL)) == 0); +#ifdef __GNUC__ /* we need `__alignof__' */ + /* Make sure bytecode for the objcode-meta is suitable aligned. Failing to + do so leads to SIGBUS/SIGSEGV on some arches (e.g., SPARC). */ + assert ((((scm_t_bits) ptr) & (__alignof__ (struct scm_objcode) - 1UL)) == 0); #endif data = (struct scm_objcode*)ptr; @@ -270,7 +251,7 @@ SCM_DEFINE (scm_write_objcode, "write-objcode", 2, 0, 0, SCM_VALIDATE_OBJCODE (1, objcode); SCM_VALIDATE_OUTPUT_PORT (2, port); - scm_c_write (port, OBJCODE_COOKIE, strlen (OBJCODE_COOKIE)); + scm_c_write (port, SCM_OBJCODE_COOKIE, strlen (SCM_OBJCODE_COOKIE)); scm_c_write (port, SCM_OBJCODE_DATA (objcode), sizeof (struct scm_objcode) + SCM_OBJCODE_TOTAL_LEN (objcode)); |