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| author | Roland McGrath <roland@gnu.org> | 2012-03-13 16:59:57 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2012-03-13 16:59:57 +0000 |
| commit | fa94de6b5c193ccfe743efa63720647f63417032 (patch) | |
| tree | 6e2097f0183c1ad232e4f9650cd885a26de0c6c7 /gas/config/tc-i386.c | |
| parent | 46cb6474c3a9fae3dbe25f7f42a7d24217d0fb5c (diff) | |
| download | gdb-fa94de6b5c193ccfe743efa63720647f63417032.zip gdb-fa94de6b5c193ccfe743efa63720647f63417032.tar.gz gdb-fa94de6b5c193ccfe743efa63720647f63417032.tar.bz2 | |
gas/
2012-03-12 Roland McGrath <mcgrathr@google.com>
* config/tc-arm.c (arm_frag_max_var): New function.
* config/tc-arm.h: Declare it.
(md_frag_max_var): New macro.
* config/tc-i386.c (i386_frag_max_var): New function.
* config/tc-i386.h: Declare it.
(md_frag_max_var): New macro.
* doc/as.texinfo (Bundle directives): New node.
(Pseudo Ops): Add it to the menu.
* NEWS: Mention new feature.
* read.c [md_frag_max_var] (HANDLE_BUNDLE): New macro.
[HANDLE_BUNDLE] (bundle_align_p2): New variable.
[HANDLE_BUNDLE] (bundle_lock_frchain, bundle_lock_frag): New variables.
[HANDLE_BUNDLE] (start_bundle, pending_bundle_size, finish_bundle):
New functions.
(assemble_one): New function if [HANDLE_BUNDLE], #define directly
to md_assembly if not.
(read_a_source_file): Call assemble_one in place of md_assemble.
(read_a_source_file) [HANDLE_BUNDLE]: Check for unterminated
.bundle_lock at end of processing.
[HANDLE_BUNDLE] (s_bundle_align_mode, s_bundle_lock, s_bundle_unlock):
New functions.
[HANDLE_BUNDLE] (potable): Add their entries.
* read.h: Declare new functions.
gas/testsuite/
2012-03-12 Roland McGrath <mcgrathr@google.com>
* gas/i386/bundle-bad.s: New file.
* gas/i386/bundle-bad.d: New file.
* gas/i386/bundle-bad.l: New file.
* gas/i386/i386.exp: Run it.
* gas/arm/bundle.s: New file.
* gas/arm/bundle.d: New file.
* gas/arm/bundle-lock.s: New file.
* gas/arm/bundle-lock.d: New file.
* gas/i386/bundle.s: New file.
* gas/i386/bundle.d: New file.
* gas/i386/x86-64-bundle.s: New file.
* gas/i386/x86-64-bundle.d: New file.
* gas/i386/bundle-lock.s: New file.
* gas/i386/bundle-lock.d: New file.
* gas/i386/i386.exp: Run them.
Diffstat (limited to 'gas/config/tc-i386.c')
| -rw-r--r-- | gas/config/tc-i386.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index 144883e..ae0b436 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -7715,6 +7715,18 @@ i386_att_operand (char *operand_string) return 1; /* Normal return. */ } +/* Calculate the maximum variable size (i.e., excluding fr_fix) + that an rs_machine_dependent frag may reach. */ + +unsigned int +i386_frag_max_var (fragS *frag) +{ + /* The only relaxable frags are for jumps. + Unconditional jumps can grow by 4 bytes and others by 5 bytes. */ + gas_assert (frag->fr_type == rs_machine_dependent); + return TYPE_FROM_RELAX_STATE (frag->fr_subtype) == UNCOND_JUMP ? 4 : 5; +} + /* md_estimate_size_before_relax() Called just before relax() for rs_machine_dependent frags. The x86 |