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authorAndy Wingo <wingo@pobox.com>2011-06-02 22:49:33 +0200
committerAndy Wingo <wingo@pobox.com>2011-06-02 22:49:33 +0200
commit46da7909e1f67c13284730344e971d293df890c0 (patch)
tree5acc96a0834b5d9be7df59ef5a126ccfb8f53a8c /libguile/objcodes.c
parent6fc3eae4772bc2c5dc3e2b377ca481eef9aa52f5 (diff)
parent715146aa15982b0d38b242f7811ac64addeb7ecc (diff)
downloadguile-46da7909e1f67c13284730344e971d293df890c0.tar.gz
Merge remote-tracking branch 'local-2.0/stable-2.0'
Conflicts: meta/Makefile.am
Diffstat (limited to 'libguile/objcodes.c')
-rw-r--r--libguile/objcodes.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/libguile/objcodes.c b/libguile/objcodes.c
index bfa13bca9..74f551efb 100644
--- a/libguile/objcodes.c
+++ b/libguile/objcodes.c
@@ -324,10 +324,38 @@ SCM_DEFINE (scm_write_objcode, "write-objcode", 2, 0, 0,
"")
#define FUNC_NAME s_scm_write_objcode
{
+ static SCM target_endianness_var = SCM_BOOL_F;
+ static SCM target_word_size_var = SCM_BOOL_F;
+
+ char cookie[sizeof (SCM_OBJCODE_COOKIE) - 1];
+ char endianness;
+ char word_size;
+
SCM_VALIDATE_OBJCODE (1, objcode);
SCM_VALIDATE_OUTPUT_PORT (2, port);
- scm_c_write (port, SCM_OBJCODE_COOKIE, strlen (SCM_OBJCODE_COOKIE));
+ if (scm_is_false (target_endianness_var))
+ target_endianness_var =
+ scm_c_public_variable ("system base target", "target-endianness");
+ if (scm_is_false (target_word_size_var))
+ target_word_size_var =
+ scm_c_public_variable ("system base target", "target-word-size");
+
+ endianness =
+ scm_is_eq (scm_call_0 (scm_variable_ref (target_endianness_var)),
+ scm_endianness_big) ? 'B' : 'L';
+ switch (scm_to_int (scm_call_0 (scm_variable_ref (target_word_size_var))))
+ {
+ case 4: word_size = '4'; break;
+ case 8: word_size = '8'; break;
+ default: abort ();
+ }
+
+ memcpy (cookie, SCM_OBJCODE_COOKIE, strlen (SCM_OBJCODE_COOKIE));
+ cookie[SCM_OBJCODE_ENDIANNESS_OFFSET] = endianness;
+ cookie[SCM_OBJCODE_WORD_SIZE_OFFSET] = word_size;
+
+ scm_c_write (port, cookie, strlen (SCM_OBJCODE_COOKIE));
scm_c_write (port, SCM_OBJCODE_DATA (objcode),
sizeof (struct scm_objcode) + SCM_OBJCODE_TOTAL_LEN (objcode));