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o Add support for configuring wordsize, fp hardware and target

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endianness.  Provide defaults for some tier-1 mips targets.
o	Parameterize all functions with SIM_DESC.
This commit is contained in:
Andrew Cagney
1997-10-14 07:27:31 +00:00
parent 6a587c4aae
commit 18c64df613
8 changed files with 822 additions and 543 deletions
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18
sim/mips/gencode.c
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@ -1570,7 +1570,7 @@ build_operands(doisa,features,insn)
ensure that the following opcode processing is not
executed. i.e. the code falls straight out to the simulator
control loop. */
printf(" sim_warning(\"Instruction has lo-order offset bits set in instruction\");\n");
printf(" sim_io_eprintf(sd,\"Instruction has lo-order offset bits set in instruction\\n\");\n");
printf(" }\n");
}
#endif
@ -2461,7 +2461,7 @@ build_instruction (doisa, features, mips16, insn)
printf(" %s tempS UNUSED = (%s)temp;\n", signed_basetype, signed_basetype);
if (insn->flags & OVERFLOW) {
printf(" if (((op1 < 0) == (op2 < 0)) && ((tempS < 0) != (op1 < 0)))\n");
printf(" SignalException(IntegerOverflow);\n");
printf(" SignalExceptionIntegerOverflow ();\n");
printf(" else\n");
}
if (!proc64 || (insn->flags & UNSIGNED) || (GETDATASIZEINSN(insn) == DOUBLEWORD))
@ -2473,7 +2473,7 @@ build_instruction (doisa, features, mips16, insn)
printf(" %s tempS UNUSED = (%s)temp;\n", signed_basetype, signed_basetype);
if (insn->flags & OVERFLOW) { /* different signs => overflow if result_sign != arg_sign */
printf(" if (((op1 < 0) != (op2 < 0)) && ((tempS < 0) == (op1 < 0)))\n");
printf(" SignalException(IntegerOverflow);\n");
printf(" SignalExceptionIntegerOverflow ();\n");
printf(" else\n");
}
/* UNSIGNED 32bit operations on a 64bit processor should
@ -2664,7 +2664,7 @@ build_instruction (doisa, features, mips16, insn)
else {
if (features & FEATURE_WARN_LOHI) {
printf(" if (%s%sACCESS != 0)\n",regname,(pipe1 ? "1" : ""));
printf(" sim_warning(\"MT (move-to) over-writing %s register value\");\n",regname);
printf(" sim_io_eprintf(sd,\"MT (move-to) over-writing %s register value\\n\");\n",regname);
}
printf(" %s%s = op1;\n",regname,(pipe1 ? "1" : ""));
}
@ -2784,7 +2784,7 @@ build_instruction (doisa, features, mips16, insn)
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");
printf(" sim_warning(\"MADD16 operation with non-16bit operands\");\n");
printf(" sim_io_eprintf(sd,\"MADD16 operation with non-16bit operands\\n\");\n");
}
printf(" {\n");
printf(" uword64 temp = (op1 * op2);\n"); /* 16x16 multiply */
@ -2801,7 +2801,7 @@ build_instruction (doisa, features, mips16, insn)
case RSVD: /* "Reserved Instruction" on MIPS IV, or if co-proc 3 absent. Otherwise "CoProcessorUnusable" */
if (doisa < 4) {
printf(" if (CoProcPresent(3))\n");
printf(" SignalException(CoProcessorUnusable);\n");
printf(" SignalExceptionCoProcessorUnusable ();\n");
printf(" else\n");
}
printf(" SignalException(ReservedInstruction,instruction);\n");
@ -2862,7 +2862,7 @@ build_instruction (doisa, features, mips16, insn)
if (insn->flags & LINK) {
if (features & FEATURE_WARN_R31) {
printf(" if (((instruction >> %d) & 0x%08X) == 31)\n",OP_SH_RS,OP_MASK_RS);
printf(" sim_warning(\"Branch with link using r31 as source operand\");\n");
printf(" sim_io_eprintf(sd,\"Branch with link using r31 as source operand\\n\");\n");
}
printf(" GPR[31] = (PC + 4); /* NOTE: PC is already 8 ahead */\n");
}
@ -2937,7 +2937,7 @@ build_instruction (doisa, features, mips16, insn)
/* The following check should only occur on normal (non-shifted) memory loads */
if ((datalen != 1) && !(insn->flags & (LEFT | RIGHT))) {
printf(" if ((vaddr & %d) != 0)\n",(datalen - 1));
printf(" SignalException(%s);\n",(isload ? "AddressLoad" : "AddressStore"));
printf(" SignalException%s();\n",(isload ? "AddressLoad" : "AddressStore"));
printf(" else\n") ;
}
@ -3609,7 +3609,7 @@ build_instruction (doisa, features, mips16, insn)
printf(" if (NaN(ofs,format) || NaN(oft,format)) {\n");
printf(" if (FCSR & FP_ENABLE(IO)) {\n");
printf(" FCSR |= FP_CAUSE(IO);\n");
printf(" SignalException(FPE);\n");
printf(" SignalExceptionFPE ();\n");
printf(" ignore = 1;\n");
printf(" }\n");
printf(" } else {\n");