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| author | Richard Henderson <rth@redhat.com> | 2000-12-28 10:07:56 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2000-12-28 10:07:56 +0000 |
| commit | 0a9ef439079f50221dad9eb5248387236d370c87 (patch) | |
| tree | c9e2b708439e46a331746ead00c3c709f5c82bb9 /gas/frags.c | |
| parent | bda9cb723c0f733f03ed6fe74dfc3b87fe5e775f (diff) | |
| download | gdb-0a9ef439079f50221dad9eb5248387236d370c87.zip gdb-0a9ef439079f50221dad9eb5248387236d370c87.tar.gz gdb-0a9ef439079f50221dad9eb5248387236d370c87.tar.bz2 | |
* as.h (rs_align_test): New.
* frags.c (NOP_OPCODE): Move default from read.c.
(MAX_MEM_FOR_RS_ALIGN_CODE): New default.
(frag_align_code): New.
* frags.h (frag_align_code): Declare.
* read.c (NOP_OPCODE): Remove.
(do_align): Use frag_align_code.
* write.c (NOP_OPCODE): Remove.
(get_recorded_alignment): New.
(cvt_frag_to_fill): Handle rs_align_test.
(relax_segment): Likewise.
(subsegs_finish): Align last subseg in section to the
section alignment. Use frag_align_code.
* write.h (get_recorded_alignment): Declare.
* config/obj-coff.c (size_section): Handle rs_align_test.
(fill_section, fixup_mdeps): Likewise.
(write_object_file): Use frag_align_code.
* config/tc-alpha.c (alpha_align): Use frag_align_code.
(alpha_handle_align): New.
* config/tc-alpha.h (HANDLE_ALIGN): New.
(MAX_MEM_FOR_RS_ALIGN_CODE): New.
* config/tc-i386.h (md_do_align): Use frag_align_code.
(MAX_MEM_FOR_RS_ALIGN_CODE): New.
* config/tc-ia64.c (ia64_md_do_align): Don't do code alignment.
(ia64_handle_align): New.
* config/tc-ia64.h (HANDLE_ALIGN): New.
(MAX_MEM_FOR_RS_ALIGN_CODE): New.
* config/tc-m32r.c (m32r_do_align): Remove.
(m32r_handle_align): New.
(fill_insn): Use frag_align_code.
* config/tc-m32r.h (md_do_align): Remove.
(HANDLE_ALIGN, MAX_MEM_FOR_RS_ALIGN_CODE): New.
* config/tc-m88k.c, config/tc-m88k.h: Similarly.
* config/tc-mips.c, config/tc-mips.h: Similarly.
* config/tc-sh.c (sh_cons_align): Use rs_align_test.
(sh_handle_align): Likewise. Handle rs_align_code.
(sh_do_align): Remove.
* config/tc-sh.h (md_do_align): Remove.
(MAX_MEM_FOR_RS_ALIGN_CODE): New.
* config/tc-sparc.c (sparc_cons_align): Use rs_align_test.
(sparc_handle_align): Likewise. Handle rs_align_code.
* config/tc-sparc.h (md_do_align): Remove.
(MAX_MEM_FOR_RS_ALIGN_CODE): New.
Diffstat (limited to 'gas/frags.c')
| -rw-r--r-- | gas/frags.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gas/frags.c b/gas/frags.c index f5a9d9e..f2f8cfe 100644 --- a/gas/frags.c +++ b/gas/frags.c @@ -322,6 +322,39 @@ frag_align_pattern (alignment, fill_pattern, n_fill, max) memcpy (p, fill_pattern, n_fill); } +/* The NOP_OPCODE is for the alignment fill value. Fill it with a nop + instruction so that the disassembler does not choke on it. */ +#ifndef NOP_OPCODE +#define NOP_OPCODE 0x00 +#endif + +/* Use this to restrict the amount of memory allocated for representing + the alignment code. Needs to be large enough to hold any fixed sized + prologue plus the replicating portion. */ +#ifndef MAX_MEM_FOR_RS_ALIGN_CODE + /* Assume that if HANDLE_ALIGN is not defined then no special action + is required to code fill, which means that we get just repeat the + one NOP_OPCODE byte. */ +# ifndef HANDLE_ALIGN +# define MAX_MEM_FOR_RS_ALIGN_CODE 1 +# else +# define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << alignment) - 1) +# endif +#endif + +void +frag_align_code (alignment, max) + int alignment; + int max; +{ + char *p; + + p = frag_var (rs_align_code, MAX_MEM_FOR_RS_ALIGN_CODE, 1, + (relax_substateT) max, (symbolS *) 0, + (offsetT) alignment, (char *) 0); + *p = NOP_OPCODE; +} + addressT frag_now_fix_octets () { |