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For new IGEN simulators, rewrite checks validating correct use of the

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HI/LO registers.  For old gencode simulator, delete all checks.
This commit is contained in:
Andrew Cagney 1998-04-21 01:17:58 +00:00
parent 98f5dae13b
commit 421cbaae98
5 changed files with 194 additions and 99 deletions
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15
sim/mips/gencode.c
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@ -2527,9 +2527,6 @@ build_instruction (doisa, features, mips16, insn)
{
char* pipe = (insn->flags & PIPE1) ? "1" : "";
if (features & FEATURE_WARN_LOHI) {
printf(" CHECKHILO(\"Multiplication\");\n");
}
printf(" {\n");
if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
printf(" uword64 mid;\n");
@ -2578,9 +2575,6 @@ build_instruction (doisa, features, mips16, insn)
int boolU = (insn->flags & UNSIGNED);
char* pipe = (insn->flags & PIPE1) ? "1" : "";
if (features & FEATURE_WARN_LOHI) {
printf(" CHECKHILO(\"Division\");\n");
}
printf(" {\n");
if (GETDATASIZEINSN(insn) == DOUBLEWORD) {
@ -2697,14 +2691,8 @@ build_instruction (doisa, features, mips16, insn)
if (insn->flags & LEFT)
printf(" GPR[destreg] = %s%s;\n",regname,(pipe1 ? "1" : ""));
else {
if (features & FEATURE_WARN_LOHI) {
printf(" if (%s%sACCESS != 0)\n",regname,(pipe1 ? "1" : ""));
printf(" sim_io_eprintf(sd,\"MT (move-to) over-writing %s register value\\n\");\n",regname);
}
printf(" %s%s = op1;\n",regname,(pipe1 ? "1" : ""));
}
if (features & FEATURE_WARN_LOHI)
printf(" %s%sACCESS = 3; /* 3rd instruction will be safe */\n",regname,(pipe1 ? "1" : ""));
} else
if (insn->flags & SHIFT16)
printf(" GPR[destreg] = (op2 << 16);\n");
@ -2813,9 +2801,6 @@ build_instruction (doisa, features, mips16, insn)
/* Some of this code is shared with the standard multiply
routines, so an effort should be made to merge where
possible. */
if (features & FEATURE_WARN_LOHI) {
printf(" CHECKHILO(\"Multiply-Add\");\n");
}
if (features & FEATURE_WARN_RESULT) {
/* Give user a warning if either op1 or op2 are not 16bit signed integers */
printf(" if (NOTHALFWORDVALUE(op1) || NOTHALFWORDVALUE(op2))\n");