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* config/tc-sh.c (JREG): Remove.

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(md_convert_frag): Remove #if 0:d code using JREG.
This commit is contained in:
Hans-Peter Nilsson 2000-10-16 19:44:39 +00:00
parent 6e45556a36
commit 266cb5f1fb
2 changed files with 5 additions and 85 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2000-10-16 Hans-Peter Nilsson <hp@bitrange.com>
* config/tc-sh.c (JREG): Remove.
(md_convert_frag): Remove #if 0:d code using JREG.
2000-10-15 Diego Novillo <dnovillo@cygnus.com>
* config/tc-i386.c (i386_operand_modifier): Only match

85
gas/config/tc-sh.c
View file

@ -123,7 +123,6 @@ const char FLT_CHARS[] = "rRsSfFdDxXpP";
#define C(a,b) ENCODE_RELAX(a,b)
#define JREG 14 /* Register used as a temp when relaxing */
#define ENCODE_RELAX(what,length) (((what) << 4) + (length))
#define GET_WHAT(x) ((x>>4))
@ -2417,47 +2416,6 @@ md_convert_frag (headers, seg, fragP)
(unsigned long) fragP->fr_address,
S_GET_NAME (fragP->fr_symbol));
#if 0
/* This code works, but generates poor code and the compiler
should never produce a sequence that requires it to be used. */
/* A jump wont fit in 12 bits, make code which looks like
bra foo
mov.w @(0, PC), r14
.long disp
foo: bra @r14
*/
int t = buffer[0] & 0x10;
buffer[highbyte ] = 0xa0; /* branch over move and disp */
buffer[lowbyte ] = 3;
buffer[highbyte + 2] = 0xd0 | JREG; /* Build mov insn */
buffer[lowbyte + 2] = 0x00;
buffer[highbyte + 4] = 0; /* space for 32 bit jump disp */
buffer[lowbyte + 4] = 0;
buffer[highbyte + 6] = 0;
buffer[lowbyte + 6] = 0;
buffer[highbyte + 8] = 0x40 | JREG; /* Build jmp @JREG */
buffer[lowbyte + 8] = t ? 0xb : 0x2b;
buffer[highbyte + 10] = 0x20; /* build nop */
buffer[lowbyte + 10] = 0x0b;
/* Make reloc for the long disp. */
fix_new (fragP,
fragP->fr_fix + 4,
4,
fragP->fr_symbol,
fragP->fr_offset,
0,
BFD_RELOC_32);
fragP->fr_fix += UNCOND32_LENGTH;
fragP->fr_var = 0;
donerelax = 1;
#endif
break;
case C (COND_JUMP, COND12):
@ -2540,49 +2498,6 @@ md_convert_frag (headers, seg, fragP)
as_bad (_("at 0x%lx, displacement to undefined symbol %s overflows 8-bit field "),
(unsigned long) fragP->fr_address,
S_GET_NAME (fragP->fr_symbol));
#if 0
/* This code works, but generates poor code, and the compiler
should never produce a sequence that requires it to be used. */
/* A bcond won't fit and it won't go into a 12 bit
displacement either, the code sequence looks like:
b!cond foop
mov.w @(n, PC), r14
jmp @r14
nop
.long where
foop:
*/
buffer[0] ^= 0x2; /* Toggle T/F bit */
#define JREG 14
buffer[1] = 5; /* branch over mov, jump, nop and ptr */
buffer[2] = 0xd0 | JREG; /* Build mov insn */
buffer[3] = 0x2;
buffer[4] = 0x40 | JREG; /* Build jmp @JREG */
buffer[5] = 0x0b;
buffer[6] = 0x20; /* build nop */
buffer[7] = 0x0b;
buffer[8] = 0; /* space for 32 bit jump disp */
buffer[9] = 0;
buffer[10] = 0;
buffer[11] = 0;
buffer[12] = 0;
buffer[13] = 0;
/* Make reloc for the long disp */
fix_new (fragP,
fragP->fr_fix + 8,
4,
fragP->fr_symbol,
fragP->fr_offset,
0,
BFD_RELOC_32);
fragP->fr_fix += COND32_LENGTH;
fragP->fr_var = 0;
donerelax = 1;
#endif
break;
default: