From: Ian Lance Taylor Date: Thu, 19 Dec 1996 19:08:46 +0000 (+0000) Subject: * gencode.c (build_instruction) [MUL]: Cast operands to word64, to X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=deffd638b5941634b3dbfd3f30649c1b37d2d129;p=binutils-gdb.git * gencode.c (build_instruction) [MUL]: Cast operands to word64, to force a 64 bit multiplication. (build_instruction) [OR]: In mips16 mode, don't do anything if the destination register is 0, since that is the default mips16 nop instruction. --- diff --git a/sim/mips/ChangeLog b/sim/mips/ChangeLog index 00923df829e..6b76eb98405 100644 --- a/sim/mips/ChangeLog +++ b/sim/mips/ChangeLog @@ -1,3 +1,11 @@ +Thu Dec 19 14:07:27 1996 Ian Lance Taylor + + * gencode.c (build_instruction) [MUL]: Cast operands to word64, to + force a 64 bit multiplication. + (build_instruction) [OR]: In mips16 mode, don't do anything if the + destination register is 0, since that is the default mips16 nop + instruction. + Mon Dec 16 14:59:38 1996 Ian Lance Taylor * gencode.c (MIPS16_DECODE): SWRASP is I8, not RI. diff --git a/sim/mips/gencode.c b/sim/mips/gencode.c index bf3d0edae77..023c99dd445 100644 --- a/sim/mips/gencode.c +++ b/sim/mips/gencode.c @@ -1622,7 +1622,7 @@ build_instruction (doisa, features, mips16, insn) if (insn->flags & UNSIGNED) printf(" uword64 temp = ((uword64)(op1 & 0xffffffff) * (uword64)(op2 & 0xffffffff));\n"); else - printf(" uword64 temp = (op1 * op2);\n"); + printf(" uword64 temp = ((word64) op1 * (word64) op2);\n"); printf(" LO = SIGNEXTEND((%s)WORD64LO(temp),32);\n",regtype); printf(" HI = SIGNEXTEND((%s)WORD64HI(temp),32);\n",regtype); } @@ -1795,6 +1795,11 @@ build_instruction (doisa, features, mips16, insn) break ; case OR: + /* The default mips16 nop instruction does an or to register + zero; catch that case, so that we don't get useless warnings + from the simulator. */ + if (mips16) + printf (" if (destreg != 0)\n"); printf(" GPR[destreg] = %s(op1 | op2);\n",((insn->flags & NOT) ? "~" : "")); break ;