diff options
Diffstat (limited to 'sim/mips/tx.igen')
| -rw-r--r-- | sim/mips/tx.igen | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sim/mips/tx.igen b/sim/mips/tx.igen new file mode 100644 index 0000000..1727ecc --- /dev/null +++ b/sim/mips/tx.igen @@ -0,0 +1,41 @@ +// -*- C -*- +// +// toshiba specific instructions. +// + +011100,5.RS,5.RT,5.RD,00000000000:MMINORM:::MADD +"madd r<RS>, r<RT>":RD == 0 +"madd r<RD>, r<RS>, r<RT>" +*r3900 +{ + signed64 prod = (U8_4 (VL4_8 (HI), VL4_8 (LO)) + + ((signed64) EXTEND32 (GPR[RT]) + * (signed64) EXTEND32 (GPR[RS]))); + check_mult_hilo (SD_, HIHISTORY, LOHISTORY); + TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]); + LO = EXTEND32 (prod); + HI = EXTEND32 (VH4_8 (prod)); + TRACE_ALU_RESULT2 (HI, LO); + if(RD != 0 ) + GPR[RD] = LO; +} + + +011100,5.RS,5.RT,5.RD,00000000001:MMINORM:::MADDU +"maddu r<RS>, r<RT>":RD == 0 +"maddu r<RD>, r<RS>, r<RT>" +*r3900 +{ + unsigned64 prod = (U8_4 (VL4_8 (HI), VL4_8 (LO)) + + ((unsigned64) VL4_8 (GPR[RS]) + * (unsigned64) VL4_8 (GPR[RT]))); + check_mult_hilo (SD_, HIHISTORY, LOHISTORY); + TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]); + LO = EXTEND32 (prod); + HI = EXTEND32 (VH4_8 (prod)); + TRACE_ALU_RESULT2 (HI, LO); + if(RD != 0) + GPR[RD] = LO; +} + + |