Download: isa3.zip.
This code tests the compare instructions.
.include "./nios_macros.m" .text .global main .type main, @function main: movi r2,48 movi r3,55 cmplt r4,r2,r3 cmpne r5,r2,r3 cmpge r6,r3,r2 cmpeqi r4,r2,48 cmpgei r5,r2,33 cmpnei r6,r3,55 sub r3,r2,r3 movi r4,37 sub r2,r4,r2 cmplt r4,r2,r3 cmpne r5,r2,r3 cmpge r6,r3,r2 cmpltu r4,r2,r3 cmpgeu r5,r2,r3 movi32 r2,-6 movi32 r3,-18 cmpgeui r5,r3,0x8abc end: br end /* wait here once the program has completed */ .end
#!/bin/sh nios2-elf-gcc isa3.s nios2-elf-size a.out nios2-elf-objdump -dS a.out > isa3.disassemble.txt nios2-elf-objcopy -S -O binary a.out isa3.bin nios2-iss -td:isa3.sim.txt --trace-from=main -f a.out
00000030 <main>: 30: 00800c04 movi r2,48 34: 00c00dc4 movi r3,55 38: 10c8803a cmplt r4,r2,r3 3c: 10cac03a cmpne r5,r2,r3 40: 188c403a cmpge r6,r3,r2 44: 11000c20 cmpeqi r4,r2,48 48: 11400848 cmpgei r5,r2,33 4c: 19800dd8 cmpnei r6,r3,55 50: 10c7c83a sub r3,r2,r3 54: 01000944 movi r4,37 58: 2085c83a sub r2,r4,r2 5c: 10c8803a cmplt r4,r2,r3 60: 10cac03a cmpne r5,r2,r3 64: 188c403a cmpge r6,r3,r2 68: 10c9803a cmpltu r4,r2,r3 6c: 10cb403a cmpgeu r5,r2,r3 70: 00bffff4 movhi r2,65535 74: 10bffe94 ori r2,r2,65530 78: 00fffff4 movhi r3,65535 7c: 18fffb94 ori r3,r3,65518 80: 1962af28 cmpgeui r5,r3,35516 00000084 <end>: 84: 003fff06 br 84 <end>
0x00000030 <main>: 0x00800c04 movi r2, 48 [dstData=0x30 dstReg=r2] 0x00000034 <main+0x4>: 0x00c00dc4 movi r3, 55 [dstData=0x37 dstReg=r3] 0x00000038 <main+0x8>: 0x10c8803a cmplt r4, r2, r3 [dstData=0x1 dstReg=r4] 0x0000003c <main+0xc>: 0x10cac03a cmpne r5, r2, r3 [dstData=0x1 dstReg=r5] 0x00000040 <main+0x10>: 0x188c403a cmpge r6, r3, r2 [dstData=0x1 dstReg=r6] 0x00000044 <main+0x14>: 0x11000c20 cmpeqi r4, r2, 48 [dstData=0x1 dstReg=r4] 0x00000048 <main+0x18>: 0x11400848 cmpgei r5, r2, 33 [dstData=0x1 dstReg=r5] 0x0000004c <main+0x1c>: 0x19800dd8 cmpnei r6, r3, 55 [dstData=0x0 dstReg=r6] 0x00000050 <main+0x20>: 0x10c7c83a sub r3, r2, r3 [dstData=0xfffffff9 dstReg=r3] 0x00000054 <main+0x24>: 0x01000944 movi r4, 37 [dstData=0x25 dstReg=r4] 0x00000058 <main+0x28>: 0x2085c83a sub r2, r4, r2 [dstData=0xfffffff5 dstReg=r2] 0x0000005c <main+0x2c>: 0x10c8803a cmplt r4, r2, r3 [dstData=0x1 dstReg=r4] 0x00000060 <main+0x30>: 0x10cac03a cmpne r5, r2, r3 [dstData=0x1 dstReg=r5] 0x00000064 <main+0x34>: 0x188c403a cmpge r6, r3, r2 [dstData=0x1 dstReg=r6] 0x00000068 <main+0x38>: 0x10c9803a cmpltu r4, r2, r3 [dstData=0x1 dstReg=r4] 0x0000006c <main+0x3c>: 0x10cb403a cmpgeu r5, r2, r3 [dstData=0x0 dstReg=r5] 0x00000070 <main+0x40>: 0x00bffff4 movhi r2, 65535 [dstData=0xffff0000 dstReg=r2] 0x00000074 <main+0x44>: 0x10bffe94 ori r2, r2, 65530 [dstData=0xfffffffa dstReg=r2] 0x00000078 <main+0x48>: 0x00fffff4 movhi r3, 65535 [dstData=0xffff0000 dstReg=r3] 0x0000007c <main+0x4c>: 0x18fffb94 ori r3, r3, 65518 [dstData=0xffffffee dstReg=r3] 0x00000080 <main+0x50>: 0x1962af28 cmpgeui r5, r3, 35516 [dstData=0x1 dstReg=r5] 0x00000084 <end>: 0x003fff06 br 0x84 <end>
Maintained by John Loomis, last updated Fri Apr 06 20:07:38 2007