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authorIan Lance Taylor <ian@airs.com>1996-05-16 19:57:12 +0000
committerIan Lance Taylor <ian@airs.com>1996-05-16 19:57:12 +0000
commitbccbc0aa84e92cb7d48e8221552bd4edcb876811 (patch)
tree6cfc6f316cb9dd6bb15c863bf49f4c99f7b39d4e
parentf4e769dc02fd968cb5a9e845cd544fd158ca4269 (diff)
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* config/tc-sh.h (struct sh_segment_info_type): Define.
(TC_SEGMENT_INFO_TYPE): Define. (sh_frob_label): Declare. (tc_frob_label): Define. (sh_flush_pending_output): Declare. (md_flush_pending_output): Define. * config/tc-sh.c (md_assemble): If relaxing, emit a R_SH_CODE reloc before the instruction if necessary. (sh_frob_label): New function. (sh_flush_pending_output): New function. (sh_coff_frob_file): Ignore ALIGN, CODE, DATA, and LABEL relocs when looking for the reloc for the target of .uses. (md_convert_frag): Fix printf format (%0xlx to 0x%lx). (sh_force_relocation): Force CODE, DATA, and LABEL relocs to be emitted. (md_apply_fix): Ignore CODE, DATA, and LABEL relocs. (sh_coff_reloc_mangle): Force CODE, DATA, and LABEL relocs to use the absolute symbol.
-rw-r--r--gas/config/tc-sh.c60
1 files changed, 56 insertions, 4 deletions
diff --git a/gas/config/tc-sh.c b/gas/config/tc-sh.c
index 7a849a0..9a406a6 100644
--- a/gas/config/tc-sh.c
+++ b/gas/config/tc-sh.c
@@ -900,6 +900,15 @@ md_assemble (str)
return;
}
+ if (sh_relax
+ && ! seg_info (now_seg)->tc_segment_info_data.in_code)
+ {
+ /* Output a CODE reloc to tell the linker that the following
+ bytes are instructions, not data. */
+ fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, R_SH_CODE);
+ seg_info (now_seg)->tc_segment_info_data.in_code = 1;
+ }
+
if (opcode->arg[0] == A_BDISP12
|| opcode->arg[0] == A_BDISP8)
{
@@ -930,6 +939,31 @@ md_assemble (str)
}
+/* This routine is called each time a label definition is seen. It
+ emits a R_SH_LABEL reloc if necessary. */
+
+void
+sh_frob_label ()
+{
+ if (sh_relax
+ && seg_info (now_seg)->tc_segment_info_data.in_code)
+ fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, R_SH_LABEL);
+}
+
+/* This routine is called when the assembler is about to output some
+ data. It emits a R_SH_DATA reloc if necessary. */
+
+void
+sh_flush_pending_output ()
+{
+ if (sh_relax
+ && seg_info (now_seg)->tc_segment_info_data.in_code)
+ {
+ fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, R_SH_DATA);
+ seg_info (now_seg)->tc_segment_info_data.in_code = 0;
+ }
+}
+
void
DEFUN (tc_crawl_symbol_chain, (headers),
object_headers * headers)
@@ -1166,7 +1200,11 @@ sh_coff_frob_file ()
for (fscan = segment_info[iseg].fix_root;
fscan != NULL;
fscan = fscan->fx_next)
- if (val == fscan->fx_frag->fr_address + fscan->fx_where)
+ if (val == fscan->fx_frag->fr_address + fscan->fx_where
+ && fscan->fx_r_type != R_SH_ALIGN
+ && fscan->fx_r_type != R_SH_CODE
+ && fscan->fx_r_type != R_SH_DATA
+ && fscan->fx_r_type != R_SH_LABEL)
break;
if (fscan == NULL)
{
@@ -1344,7 +1382,7 @@ md_convert_frag (headers, seg, fragP)
case C (COND_JUMP, COND32):
case C (COND_JUMP, UNDEF_WORD_DISP):
if (fragP->fr_symbol == NULL)
- as_bad ("at %0xlx, displacement overflows 8-bit field",
+ as_bad ("at 0x%lx, displacement overflows 8-bit field",
(unsigned long) fragP->fr_address);
else
as_bad ("at 0x%lx, displacement to %sdefined symbol %s overflows 8-bit field ",
@@ -1462,7 +1500,10 @@ sh_force_relocation (fix)
return (fix->fx_pcrel
|| SWITCH_TABLE (fix)
|| fix->fx_r_type == R_SH_COUNT
- || fix->fx_r_type == R_SH_ALIGN);
+ || fix->fx_r_type == R_SH_ALIGN
+ || fix->fx_r_type == R_SH_CODE
+ || fix->fx_r_type == R_SH_DATA
+ || fix->fx_r_type == R_SH_LABEL);
}
/* Apply a fixup to the object file. */
@@ -1593,6 +1634,9 @@ md_apply_fix (fixP, val)
case R_SH_COUNT:
case R_SH_ALIGN:
+ case R_SH_CODE:
+ case R_SH_DATA:
+ case R_SH_LABEL:
/* Nothing to do here. */
break;
@@ -1705,7 +1749,8 @@ sh_do_align (n, fill, len)
#ifdef BFD_ASSEMBLER
|| (now_seg->flags & SEC_CODE) != 0
#endif
- || strcmp (obj_segment_name (now_seg), ".init") == 0))
+ || strcmp (obj_segment_name (now_seg), ".init") == 0)
+ && n > 1)
{
static const unsigned char big_nop_pattern[] = { 0x00, 0x09 };
static const unsigned char little_nop_pattern[] = { 0x09, 0x00 };
@@ -1804,6 +1849,13 @@ sh_coff_reloc_mangle (seg, fix, intr, paddr)
/* This reloc is always absolute. */
symbol_ptr = NULL;
}
+ else if (fix->fx_r_type == R_SH_CODE
+ || fix->fx_r_type == R_SH_DATA
+ || fix->fx_r_type == R_SH_LABEL)
+ {
+ /* These relocs are always absolute. */
+ symbol_ptr = NULL;
+ }
/* Turn the segment of the symbol into an offset. */
if (symbol_ptr != NULL)