[plugin] When dynamic linking, R15 is clobbered by a global variable access and is used here: 03578
fzzf678 opened this issue · comments
build plugin 时候遇到这个问题，请教下是什么原因
go version:
root@b158c8f1ffd7:/home/code/tidb# go version
go version go1.20.5 linux/amd64
msg:
# github.com/emmansun/gmsm/sm3
asm: sm3block_amd64.s:1073: when dynamic linking, R15 is clobbered by a global variable access and is used here: 03578 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm3/sm3block_amd64.s:1073) RORXL $-7, R14, R15
asm: assembly failed
# github.com/emmansun/gmsm/internal/sm2ec
asm: p256_asm_amd64.s:410: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00271 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:410) MULXQ 16(SI), AX, R15
asm: p256_asm_amd64.s:708: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00590 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:708) MULXQ (SI), AX, R15
asm: p256_asm_amd64.s:1465: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01205 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:1465) MULXQ p256ord<>(SB), AX, R15
asm: p256_asm_amd64.s:1882: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01553 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:1882) MULXQ 16(SI), AX, R15
asm: p256_asm_amd64.s:2114: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01719 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:2114) MULQ R15
asm: p256_asm_amd64.s:2646: when dynamic linking, R15 is clobbered by a global variable access and is used here: 02146 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:2646) MULXQ R13, AX, R15
asm: p256_asm_amd64.s:2912: when dynamic linking, R15 is clobbered by a global variable access and is used here: 02270 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/internal/sm2ec/p256_asm_amd64.s:2912) MOVL R15, 488(SP)
asm: assembly failed
# github.com/emmansun/gmsm/sm9/bn256
asm: gfp2_g1_amd64.s:218: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00141 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:218) ADCXQ R15, R9
asm: gfpMulInternal: invalid instruction: 00256 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:139) MULXQ (R15), AX
asm: gfpMulInternal: invalid instruction: 00263 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:141) MULXQ (R15), R14
asm: gfpMulInternal: invalid instruction: 00276 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:144) MULXQ 8(R15), BP
asm: gfpMulInternal: invalid instruction: 00295 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:148) MULXQ 16(R15), R14
asm: gfpMulInternal: invalid instruction: 00314 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:152) MULXQ 24(R15), BX
asm: gfpMulInternal: invalid instruction: 00348 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:160) MULXQ (R15), AX
asm: gfpMulInternal: invalid instruction: 00355 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:162) MULXQ (R15), R14
asm: gfpMulInternal: invalid instruction: 00368 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:165) MULXQ 8(R15), BP
asm: gfpMulInternal: invalid instruction: 00387 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:169) MULXQ 16(R15), R14
asm: gfpMulInternal: invalid instruction: 00406 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:173) MULXQ 24(R15), CX
asm: gfpMulInternal: invalid instruction: 00440 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:181) MULXQ (R15), AX
asm: gfpMulInternal: invalid instruction: 00447 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:183) MULXQ (R15), R14
asm: gfpMulInternal: invalid instruction: 00460 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:186) MULXQ 8(R15), BP
asm: gfpMulInternal: invalid instruction: 00479 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:190) MULXQ 16(R15), R14
asm: gfpMulInternal: invalid instruction: 00498 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:194) MULXQ 24(R15), R8
asm: gfpMulInternal: invalid instruction: 00532 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:202) MULXQ (R15), AX
asm: gfpMulInternal: invalid instruction: 00539 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:204) MULXQ (R15), R14
asm: gfpMulInternal: invalid instruction: 00552 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:207) MULXQ 8(R15), BP
asm: gfpMulInternal: invalid instruction: 00571 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:211) MULXQ 16(R15), R14
asm: gfpMulInternal: invalid instruction: 00590 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:215) MULXQ 24(R15), R9
asm: gfp2_g1_amd64.s:939: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00713 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:939) CMOVQCS R15, R11
asm: gfpSqrInternal: invalid instruction: 00252 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:599) MULXQ (R15), AX
asm: gfpSqrInternal: invalid instruction: 00259 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:601) MULXQ (R15), R10
asm: gfpSqrInternal: invalid instruction: 00272 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:604) MULXQ 8(R15), BP
asm: gfpSqrInternal: invalid instruction: 00291 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:608) MULXQ 16(R15), R10
asm: gfpSqrInternal: invalid instruction: 00310 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:612) MULXQ 24(R15), BX
asm: gfpSqrInternal: invalid instruction: 00344 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:620) MULXQ (R15), AX
asm: gfpSqrInternal: invalid instruction: 00351 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:622) MULXQ (R15), R10
asm: gfpSqrInternal: invalid instruction: 00364 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:625) MULXQ 8(R15), BP
asm: gfpSqrInternal: invalid instruction: 00383 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:629) MULXQ 16(R15), R10
asm: gfpSqrInternal: invalid instruction: 00402 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:633) MULXQ 24(R15), CX
asm: gfpSqrInternal: invalid instruction: 00436 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:641) MULXQ (R15), AX
asm: gfpSqrInternal: invalid instruction: 00443 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:643) MULXQ (R15), R10
asm: gfpSqrInternal: invalid instruction: 00456 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:646) MULXQ 8(R15), BP
asm: gfpSqrInternal: invalid instruction: 00475 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:650) MULXQ 16(R15), R10
asm: gfpSqrInternal: invalid instruction: 00494 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:654) MULXQ 24(R15), R8
asm: gfpSqrInternal: invalid instruction: 00528 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:662) MULXQ (R15), AX
asm: gfpSqrInternal: invalid instruction: 00535 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:664) MULXQ (R15), R10
asm: gfpSqrInternal: invalid instruction: 00548 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:667) MULXQ 8(R15), BP
asm: gfpSqrInternal: invalid instruction: 00567 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:671) MULXQ 16(R15), R10
asm: gfpSqrInternal: invalid instruction: 00586 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:675) MULXQ 24(R15), R9
asm: gfp2_g1_amd64.s:1077: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00819 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1077) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1162: when dynamic linking, R15 is clobbered by a global variable access and is used here: 00991 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1162) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1213: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01046 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1213) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1282: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01202 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1282) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1344: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01372 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1344) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1471: when dynamic linking, R15 is clobbered by a global variable access and is used here: 01744 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1471) CMOVQCS R11, R15
asm: gfp2_g1_amd64.s:1720: when dynamic linking, R15 is clobbered by a global variable access and is used here: 03280 (/share/.go/pkg/mod/github.com/emmansun/gmsm@v0.20.0/sm9/bn256/gfp2_g1_amd64.s:1720) CMOVQCS R11, R15
asm: assembly failed
2023/09/05 10:33:26 compile plugin source code failure, exit status 1
看来插件模式不能用寄存器R15，这个比较麻烦，我先看看。
https://groups.google.com/g/golang-codereviews/c/124cVR_LDTo
golang/go#43661
Hi @fzzf678 , 目前 sm2/sm3/sm9/zuc 的amd64汇编实现，都使用了R15寄存器，由于AMD64寄存器本来就比较少：
x86 has just 8 general-purpose registers available (eax, ebx, ecx, edx, ebp, esp, esi, edi). x64 extended them to 64 bits (prefix "r" instead of "e") and added another 8 (r8, r9, r10, r11, r12, r13, r14, r15). Since some of x86's registers have special implicit meanings and aren't really used as general-purpose (most notably ebp and esp), the effective increase is even larger than it seems.
所以，真要使用插件模式，目前唯有使用purego编译选项（-tags=purego），而且目前只支持整个项目的purego编译选项，不支持分sm2/sm3/sm4/sm9/zuc等的编译选项（这个可以改进）。
@emmansun thks，使用 purego 选项可以编译通过。目前看来是只有这一种解决方法了吧
是的，只是性能就也是purego的性能了，目前可以改进的是，增加一些算法级别的编译选项（sm2purego/sm3purego/sm9purego/zucpurego，或者定义一个plugin编译选项），这样插件模式也能使用amd64汇编实现的sm4等。如果不能接受这种编译选项下的性能，建议使用非插件模式。
为amd64 plugin编译提供汇编支持
- sm3 去除R15使用，plugin编译没有特殊实现；
- zuc core去除R15使用，plugin编译没有特殊实现；
- internal/sm2ec: 单独为plugin编译flag去除R15使用；
- sm9/bn256: gfp单独为plugin编译flag去除R15使用，gfp2未作修改（权衡性能和可维护性，除非必要）；
v0.20.2