Add assorted defines for x86/amd64/aarch64 #108
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``` .intel_syntax noprefix .global _start _start: or rcx,rax mov rax,rcx cmp rbx,rdx ``` ``` main: file format elf64-x86-64 Disassembly of section .text: 0000000000401000 <_start>: 401000: 48 09 c1 or rcx,rax 401003: 48 89 c8 mov rax,rcx 401006: 48 39 d3 cmp rbx,rdx ```
``` .intel_syntax noprefix .global _start _start: or ecx,eax mov eax,ecx cmp ebx,edx ``` ``` main: file format elf64-x86-64 Disassembly of section .text: 0000000000401000 <_start>: 401000: 09 c1 or ecx,eax 401002: 89 c8 mov eax,ecx 401004: 39 d3 cmp ebx,edx ```
``` .global _start _start: csel x2,x3,x2,eq mov x0,x2 mov x3,1 ``` ``` /tmp/main: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: 9a820062 csel x2, x3, x2, eq // eq = none 40007c: aa0203e0 mov x0, x2 400080: d2800023 mov x3, #0x1 // oriansj#1 ```
``` .intel_syntax noprefix .global _start _start: cmp rax,0 cmp rax,1 cmp rcx,0 cmp rcx,1 cmp rcx,rdx lea rbx, [rbp+257] movzx rbx,BYTE PTR [rbx] movzx rcx,BYTE PTR [rax] movzx rdx,BYTE PTR [rbx] inc rax inc rbx ``` ``` /tmp/main-amd64: file format elf64-x86-64 Disassembly of section .text: 0000000000401000 <_start>: 401000: 48 83 f8 00 cmp rax,0x0 401004: 48 83 f8 01 cmp rax,0x1 401008: 48 83 f9 00 cmp rcx,0x0 40100c: 48 83 f9 01 cmp rcx,0x1 401010: 48 39 d1 cmp rcx,rdx 401013: 48 8d 9d 01 01 00 00 lea rbx,[rbp+0x101] 40101a: 48 0f b6 1b movzx rbx,BYTE PTR [rbx] 40101e: 48 0f b6 08 movzx rcx,BYTE PTR [rax] 401022: 48 0f b6 13 movzx rdx,BYTE PTR [rbx] 401026: 48 ff c0 inc rax 401029: 48 ff c3 inc rbx ```
``` .intel_syntax noprefix .global _start _start: cmp eax,0 cmp eax,1 cmp ecx,0 cmp ecx,1 cmp ecx,edx lea ebx, [ebp+257] movzx ebx, BYTE PTR [ebx] movzx ecx, BYTE PTR [eax] movzx edx, BYTE PTR [ebx] inc eax inc ebx ``` ``` /tmp/main-x86: file format elf32-i386 Disassembly of section .text: 08049000 <_start>: 8049000: 83 f8 00 cmp eax,0x0 8049003: 83 f8 01 cmp eax,0x1 8049006: 83 f9 00 cmp ecx,0x0 8049009: 83 f9 01 cmp ecx,0x1 804900c: 39 d1 cmp ecx,edx 804900e: 8d 9d 01 01 00 00 lea ebx,[ebp+0x101] 8049014: 0f b6 1b movzx ebx,BYTE PTR [ebx] 8049017: 0f b6 08 movzx ecx,BYTE PTR [eax] 804901a: 0f b6 13 movzx edx,BYTE PTR [ebx] 804901d: 40 inc eax 804901e: 43 inc ebx ```
``` .global _start _start: ldr x0,[x17,8] ldr x0,[x17,16] ldr x0,[x17,24] ldr x0,[x17,32] ldr x0,[x17,40] ldr x0,[x17,48] ldr x0,[x17,56] ldr x0,[x17,64] ldr x0,[x17,72] ldr x0,[x17,80] ldr x0,[x17,88] ldr x0,[x17,96] ldr x0,[x17,104] ldr x0,[x17,112] ldr x0,[x17,120] ldr x0,[x17,128] sub x0,x17,8 sub x0,x17,16 sub x0,x17,24 sub x0,x17,32 sub x0,x17,40 sub x0,x17,48 sub x0,x17,56 sub x0,x17,64 sub x0,x17,72 sub x0,x17,80 sub x0,x17,88 sub x0,x17,96 sub x0,x17,104 sub x0,x17,112 sub x0,x17,120 sub x0,x17,128 sub x0,x13,8 sub x0,x13,16 sub x0,x13,24 sub x0,x13,32 sub x0,x13,40 sub x0,x13,48 sub x0,x13,56 sub x0,x13,64 sub x0,x13,72 sub x0,x13,80 sub x0,x13,88 sub x0,x13,96 sub x0,x13,104 sub x0,x13,112 sub x0,x13,120 sub x0,x13,128 ``` ``` /tmp/main-aarch64: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: f9400620 ldr x0, [x17, oriansj#8] 40007c: f9400a20 ldr x0, [x17, oriansj#16] 400080: f9400e20 ldr x0, [x17, oriansj#24] 400084: f9401220 ldr x0, [x17, oriansj#32] 400088: f9401620 ldr x0, [x17, oriansj#40] 40008c: f9401a20 ldr x0, [x17, oriansj#48] 400090: f9401e20 ldr x0, [x17, oriansj#56] 400094: f9402220 ldr x0, [x17, oriansj#64] 400098: f9402620 ldr x0, [x17, oriansj#72] 40009c: f9402a20 ldr x0, [x17, oriansj#80] 4000a0: f9402e20 ldr x0, [x17, oriansj#88] 4000a4: f9403220 ldr x0, [x17, oriansj#96] 4000a8: f9403620 ldr x0, [x17, oriansj#104] 4000ac: f9403a20 ldr x0, [x17, #112] 4000b0: f9403e20 ldr x0, [x17, #120] 4000b4: f9404220 ldr x0, [x17, #128] 4000b8: d1002220 sub x0, x17, #0x8 4000bc: d1004220 sub x0, x17, #0x10 4000c0: d1006220 sub x0, x17, #0x18 4000c4: d1008220 sub x0, x17, #0x20 4000c8: d100a220 sub x0, x17, #0x28 4000cc: d100c220 sub x0, x17, #0x30 4000d0: d100e220 sub x0, x17, #0x38 4000d4: d1010220 sub x0, x17, #0x40 4000d8: d1012220 sub x0, x17, #0x48 4000dc: d1014220 sub x0, x17, #0x50 4000e0: d1016220 sub x0, x17, #0x58 4000e4: d1018220 sub x0, x17, #0x60 4000e8: d101a220 sub x0, x17, #0x68 4000ec: d101c220 sub x0, x17, #0x70 4000f0: d101e220 sub x0, x17, #0x78 4000f4: d1020220 sub x0, x17, #0x80 4000f8: d10021a0 sub x0, x13, #0x8 4000fc: d10041a0 sub x0, x13, #0x10 400100: d10061a0 sub x0, x13, #0x18 400104: d10081a0 sub x0, x13, #0x20 400108: d100a1a0 sub x0, x13, #0x28 40010c: d100c1a0 sub x0, x13, #0x30 400110: d100e1a0 sub x0, x13, #0x38 400114: d10101a0 sub x0, x13, #0x40 400118: d10121a0 sub x0, x13, #0x48 40011c: d10141a0 sub x0, x13, #0x50 400120: d10161a0 sub x0, x13, #0x58 400124: d10181a0 sub x0, x13, #0x60 400128: d101a1a0 sub x0, x13, #0x68 40012c: d101c1a0 sub x0, x13, #0x70 400130: d101e1a0 sub x0, x13, #0x78 400134: d10201a0 sub x0, x13, #0x80 ```
``` .global _start _start: cset w0,cc cset w0,ls cset w0,cs cset w0,hi ``` ``` /tmp/main-aarch64: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: 1a9f27e0 cset w0, cc // cc = lo, ul, last 40007c: 1a9f87e0 cset w0, ls // ls = plast 400080: 1a9f37e0 cset w0, cs // cs = hs, nlast 400084: 1a9f97e0 cset w0, hi // hi = pmore ```
``` .global _start _start: cmp x0,0 cmp x2,0 cmp x2,x3 ldrb w2,[x0] ldrb w3,[x1] add x0,x0,1 add x1,x1,1 ``` ``` /tmp/main-aarch64: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: f100001f cmp x0, #0x0 40007c: f100005f cmp x2, #0x0 400080: eb03005f cmp x2, x3 400084: 39400002 ldrb w2, [x0] 400088: 39400023 ldrb w3, [x1] 40008c: 91000400 add x0, x0, #0x1 400090: 91000421 add x1, x1, #0x1 ```
Contributor
Author
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Additional utility defines as well as some codegen improvements for aarch64. I'll add those in a separate M2-Planet PR later. |
``` .global _start _start: cset w6,lt cset w6,le cset w6,eq cset w6,ne cset w6,gt cset w6,ge cset w6,cc cset w6,ls cset w6,cs cset w6,hi cbnz w6,20 cbnz w0,20 ``` ``` /tmp/main-aarch64: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: 1a9fa7e6 cset w6, lt // lt = tstop 40007c: 1a9fc7e6 cset w6, le 400080: 1a9f17e6 cset w6, eq // eq = none 400084: 1a9f07e6 cset w6, ne // ne = any 400088: 1a9fd7e6 cset w6, gt 40008c: 1a9fb7e6 cset w6, ge // ge = tcont 400090: 1a9f27e6 cset w6, cc // cc = lo, ul, last 400094: 1a9f87e6 cset w6, ls // ls = plast 400098: 1a9f37e6 cset w6, cs // cs = hs, nlast 40009c: 1a9f97e6 cset w6, hi // hi = pmore 4000a0: 350000a6 cbnz w6, 4000b4 <_start+0x3c> 4000a4: 350000a0 cbnz w0, 4000b8 <_start+0x40> ```
``` .global _start _start: cbz x2,20 cbnz x2,20 ``` ``` /tmp/main-aarch64: file format elf64-littleaarch64 Disassembly of section .text: 0000000000400078 <_start>: 400078: b40000a2 cbz x2, 40008c <_start+0x14> 40007c: b50000a2 cbnz x2, 400090 <_start+0x18> ```
stikonas
approved these changes
Nov 4, 2025
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Some misc defines that are useful for writing manual assembly.
@stikonas @oriansj