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* config/tc-tic80.c (md_apply_fix): Check PC relative relocations

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for overflow/underflow, only insert lower 15 bits into instruction.
This commit is contained in:
Fred Fish
1997-05-13 17:55:41 +00:00
parent 8490235019
commit 7b02bacd3d
2 changed files with 20 additions and 3 deletions
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7
gas/ChangeLog
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@ -1,3 +1,10 @@
start-sanitize-tic80
Tue May 13 10:45:56 1997 Fred Fish <fnf@cygnus.com>
* config/tc-tic80.c (md_apply_fix): Check PC relative relocations
for overflow/underflow, only insert lower 15 bits into instruction.
end-sanitize-tic80
Mon May 12 13:33:08 1997 H.J. Lu <hjl@gnu.ai.mit.edu> Mon May 12 13:33:08 1997 H.J. Lu <hjl@gnu.ai.mit.edu>
* config/tc-i386.c (pi): Check for RegMMX. * config/tc-i386.c (pi): Check for RegMMX.

16
gas/config/tc-tic80.c
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@ -917,6 +917,7 @@ md_apply_fix (fixP, val)
long val; long val;
{ {
char *dest = fixP -> fx_frag -> fr_literal + fixP -> fx_where; char *dest = fixP -> fx_frag -> fr_literal + fixP -> fx_where;
int overflow;
switch (fixP -> fx_r_type) switch (fixP -> fx_r_type)
{ {
@ -924,9 +925,18 @@ md_apply_fix (fixP, val)
md_number_to_chars (dest, (valueT) val, 4); md_number_to_chars (dest, (valueT) val, 4);
break; break;
case R_MPPCR: case R_MPPCR:
/* FIXME! - should check for overflow of the 15 bit field */ overflow = (val < 0) ? !(val & 0x8000) : (val & 0x8000);
*dest++ = val >> 2; if (overflow)
*dest = (*dest & 0x80) | val >> 10; {
as_bad_where (fixP -> fx_file, fixP -> fx_line, "PC relative target out of range");
}
else
{
val >>= 2;
*dest++ = val & 0xFF;
val >>= 8;
*dest = (*dest & 0x80) | (val & 0x7F);
}
break; break;
case R_ABS: case R_ABS:
md_number_to_chars (dest, (valueT) val, fixP -> fx_size); md_number_to_chars (dest, (valueT) val, fixP -> fx_size);