mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-02-07 06:53:33 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix -Xaarch64 in cosmocc

Browse source 
It's now possible to pass flags like -Xaarch64-march=armv8.2-a+dotprod
so that cosmocc will use newer ARM ISAs. For AMD64 there's another one
worth mentioning, which looks like this: -Xx86_64-mssse3
This commit is contained in:
Justine Tunney 2024-01-04 07:16:36 -08:00
parent 3864f78b88
commit 873069fcd7
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
3 changed files with 93 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
tool/cosmocc/README.md
View file

@ -134,6 +134,13 @@ kinds of codebases using `cosmocc` which is just a convenient wrapper
around the cross compilers, which would be a better choice to use in
this type of circumstance.
## Usage
By default, all the code you compile will use the baseline of the X86_64
and AARCH64, which is K8 and ARMv8.0. You can pass architecture specific
flags to use newer ISAs by using the `-Xx86_64` and `-Xaarch64` prefixes
like `-Xx86_64-mssse3` and `-Xaarch64-march=armv8.2-a+dotprod`.
## Troubleshooting
Your `cosmocc` compiler runs a number commands under the hood. If

2
tool/cosmocc/bin/cosmocc
View file

@ -185,7 +185,7 @@ for x; do
continue
elif [ x"$x" != x"${x#-Xaarch64}" ]; then
x=${x#-Xaarch64}
FLAGS_aarch64="$FLAGS_aarch64 $x"
FLAGS_AARCH64="$FLAGS_AARCH64 $x"
continue
elif [ x"$x" = x"-dumpversion" ]; then
echo $GCC_VERSION

85
tool/viz/hwcap.c Normal file
View file

@ -0,0 +1,85 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2024 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/sysv/consts/hwcap.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/auxv.h"
int main(int argc, char *argv[]) {
#ifdef __aarch64__
long x = getauxval(AT_HWCAP);
if (x & HWCAP_FP) puts("HWCAP_FP");
if (x & HWCAP_ASIMD) puts("HWCAP_ASIMD");
if (x & HWCAP_EVTSTRM) puts("HWCAP_EVTSTRM");
if (x & HWCAP_AES) puts("HWCAP_AES");
if (x & HWCAP_PMULL) puts("HWCAP_PMULL");
if (x & HWCAP_SHA1) puts("HWCAP_SHA1");
if (x & HWCAP_SHA2) puts("HWCAP_SHA2");
if (x & HWCAP_CRC32) puts("HWCAP_CRC32");
if (x & HWCAP_ATOMICS) puts("HWCAP_ATOMICS");
if (x & HWCAP_FPHP) puts("HWCAP_FPHP");
if (x & HWCAP_ASIMDHP) puts("HWCAP_ASIMDHP");
if (x & HWCAP_CPUID) puts("HWCAP_CPUID");
if (x & HWCAP_ASIMDRDM) puts("HWCAP_ASIMDRDM");
if (x & HWCAP_JSCVT) puts("HWCAP_JSCVT");
if (x & HWCAP_FCMA) puts("HWCAP_FCMA");
if (x & HWCAP_LRCPC) puts("HWCAP_LRCPC");
if (x & HWCAP_DCPOP) puts("HWCAP_DCPOP");
if (x & HWCAP_SHA3) puts("HWCAP_SHA3");
if (x & HWCAP_SM3) puts("HWCAP_SM3");
if (x & HWCAP_SM4) puts("HWCAP_SM4");
if (x & HWCAP_ASIMDDP) puts("HWCAP_ASIMDDP");
if (x & HWCAP_SHA512) puts("HWCAP_SHA512");
if (x & HWCAP_SVE) puts("HWCAP_SVE");
if (x & HWCAP_ASIMDFHM) puts("HWCAP_ASIMDFHM");
if (x & HWCAP_DIT) puts("HWCAP_DIT");
if (x & HWCAP_USCAT) puts("HWCAP_USCAT");
if (x & HWCAP_ILRCPC) puts("HWCAP_ILRCPC");
if (x & HWCAP_FLAGM) puts("HWCAP_FLAGM");
if (x & HWCAP_SSBS) puts("HWCAP_SSBS");
if (x & HWCAP_SB) puts("HWCAP_SB");
if (x & HWCAP_PACA) puts("HWCAP_PACA");
if (x & HWCAP_PACG) puts("HWCAP_PACG");
x = getauxval(AT_HWCAP2);
if (x & HWCAP2_DCPODP) puts("HWCAP2_DCPODP");
if (x & HWCAP2_SVE2) puts("HWCAP2_SVE2");
if (x & HWCAP2_SVEAES) puts("HWCAP2_SVEAES");
if (x & HWCAP2_SVEPMULL) puts("HWCAP2_SVEPMULL");
if (x & HWCAP2_SVEBITPERM) puts("HWCAP2_SVEBITPERM");
if (x & HWCAP2_SVESHA3) puts("HWCAP2_SVESHA3");
if (x & HWCAP2_SVESM4) puts("HWCAP2_SVESM4");
if (x & HWCAP2_FLAGM2) puts("HWCAP2_FLAGM2");
if (x & HWCAP2_FRINT) puts("HWCAP2_FRINT");
if (x & HWCAP2_SVEI8MM) puts("HWCAP2_SVEI8MM");
if (x & HWCAP2_SVEF32MM) puts("HWCAP2_SVEF32MM");
if (x & HWCAP2_SVEF64MM) puts("HWCAP2_SVEF64MM");
if (x & HWCAP2_SVEBF16) puts("HWCAP2_SVEBF16");
if (x & HWCAP2_I8MM) puts("HWCAP2_I8MM");
if (x & HWCAP2_BF16) puts("HWCAP2_BF16");
if (x & HWCAP2_DGH) puts("HWCAP2_DGH");
if (x & HWCAP2_RNG) puts("HWCAP2_RNG");
if (x & HWCAP2_BTI) puts("HWCAP2_BTI");
if (x & HWCAP2_MTE) puts("HWCAP2_MTE");
#endif /* __aarch64__ */
}