diff options
author | Andy Wingo <wingo@pobox.com> | 2011-06-02 22:49:33 +0200 |
---|---|---|
committer | Andy Wingo <wingo@pobox.com> | 2011-06-02 22:49:33 +0200 |
commit | 46da7909e1f67c13284730344e971d293df890c0 (patch) | |
tree | 5acc96a0834b5d9be7df59ef5a126ccfb8f53a8c /libguile/objcodes.c | |
parent | 6fc3eae4772bc2c5dc3e2b377ca481eef9aa52f5 (diff) | |
parent | 715146aa15982b0d38b242f7811ac64addeb7ecc (diff) | |
download | guile-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.c | 30 |
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)); |