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5a, 5l: add LDREXD, STREXD

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R=ken2
CC=golang-dev
https://golang.org/cl/4239041
This commit is contained in:
Russ Cox 2011-02-25 01:03:54 -05:00
parent ad8b0d915b
commit 96c785de39
5 changed files with 30 additions and 1 deletions
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2
src/cmd/5a/lex.c
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@ -364,7 +364,9 @@ struct
"MOVWF", LTYPE3, AMOVWF,
"LDREX", LTYPE3, ALDREX,
"LDREXD", LTYPE3, ALDREXD,
"STREX", LTYPE9, ASTREX,
"STREXD", LTYPE9, ASTREXD,
/*
"ABSF", LTYPEI, AABSF,

3
src/cmd/5l/5.out.h
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@ -179,6 +179,9 @@ enum as
ALDREX,
ASTREX,
ALDREXD,
ASTREXD,
ALAST,
};

21
src/cmd/5l/asm.c
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@ -1463,7 +1463,7 @@ if(debug['G']) print("%ux: %s: arm %d %d %d\n", (uint32)(p->pc), p->from.sym->na
aclass(&p->from);
if(instoffset != 0)
diag("offset must be zero in STREX");
o1 = (0x3<<23) | (0xf9<<4);
o1 = (0x18<<20) | (0xf90);
o1 |= p->from.reg << 16;
o1 |= p->reg << 0;
o1 |= p->to.reg << 12;
@ -1553,6 +1553,25 @@ if(debug['G']) print("%ux: %s: arm %d %d %d\n", (uint32)(p->pc), p->from.sym->na
o1 = oprrr(ACMP+AEND, p->scond);
o1 |= p->from.reg<<16;
break;
case 91: /* ldrexd oreg,reg */
aclass(&p->from);
if(instoffset != 0)
diag("offset must be zero in LDREX");
o1 = (0x1b<<20) | (0xf9f);
o1 |= p->from.reg << 16;
o1 |= p->to.reg << 12;
o1 |= (p->scond & C_SCOND) << 28;
break;
case 92: /* strexd reg,oreg,reg */
aclass(&p->from);
if(instoffset != 0)
diag("offset must be zero in STREX");
o1 = (0x1a<<20) | (0xf90);
o1 |= p->from.reg << 16;
o1 |= p->reg << 0;
o1 |= p->to.reg << 12;
o1 |= (p->scond & C_SCOND) << 28;
break;
}
out[0] = o1;

3
src/cmd/5l/optab.c
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@ -253,5 +253,8 @@ Optab optab[] =
{ ATST, C_REG, C_NONE, C_NONE, 90, 4, 0 },
{ ALDREXD, C_SOREG,C_NONE, C_REG, 91, 4, 0 },
{ ASTREXD, C_SOREG,C_REG, C_REG, 92, 4, 0 },
{ AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0 },
};

2
src/cmd/5l/span.c
View File

@ -1054,6 +1054,8 @@ buildop(void)
case ALDREX:
case ASTREX:
case ALDREXD:
case ASTREXD:
case ATST:
break;
}