diff options
| author | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-06-01 12:12:25 +0000 |
|---|---|---|
| committer | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-06-01 12:50:20 +0000 |
| commit | b501b2ae52f3ccb384584dcbb5dc4a4568cc0096 (patch) | |
| tree | cb2c21c0778f7cacb56a5595f200378c5d7cfc32 | |
| parent | ec7b47fc81b22470fb177d9e03b5a76818eee65f (diff) | |
| download | src-b501b2ae52f3ccb384584dcbb5dc4a4568cc0096.tar.gz src-b501b2ae52f3ccb384584dcbb5dc4a4568cc0096.zip | |
linux: export AT_HWCAP and AT_HWCAP2 on aarch64
The flag values seem to be the same between Linux and FreeBSD.
Comparing to a Linux VM on the same hardware, we're missing
HWCAP_EVTSTRM, HWCAP_CPUID, HWCAP_DCPOP, HWCAP_USCAT, HWCAP_PACA,
and HWCAP_PACG.
Reviewed By: mhorne, emaste
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30540
| -rw-r--r-- | sys/arm64/linux/linux_sysvec.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/arm64/linux/linux_sysvec.c b/sys/arm64/linux/linux_sysvec.c index 4db319cd96fd..365cb9fc386a 100644 --- a/sys/arm64/linux/linux_sysvec.c +++ b/sys/arm64/linux/linux_sysvec.c @@ -57,6 +57,8 @@ __FBSDID("$FreeBSD$"); #include <compat/linux/linux_util.h> #include <compat/linux/linux_vdso.h> +#include <machine/md_var.h> + #ifdef VFP #include <machine/vfp.h> #endif @@ -169,9 +171,7 @@ linux_copyout_auxargs(struct image_params *imgp, uintptr_t base) issetugid = p->p_flag & P_SUGID ? 1 : 0; AUXARGS_ENTRY(pos, LINUX_AT_SYSINFO_EHDR, imgp->proc->p_sysent->sv_shared_page_base); -#if 0 /* LINUXTODO: implement arm64 LINUX_AT_HWCAP */ - AUXARGS_ENTRY(pos, LINUX_AT_HWCAP, cpu_feature); -#endif + AUXARGS_ENTRY(pos, LINUX_AT_HWCAP, *imgp->sysent->sv_hwcap); AUXARGS_ENTRY(pos, AT_PAGESZ, args->pagesz); AUXARGS_ENTRY(pos, LINUX_AT_CLKTCK, stclohz); AUXARGS_ENTRY(pos, AT_PHDR, args->phdr); @@ -186,6 +186,7 @@ linux_copyout_auxargs(struct image_params *imgp, uintptr_t base) AUXARGS_ENTRY(pos, AT_EGID, imgp->proc->p_ucred->cr_svgid); AUXARGS_ENTRY(pos, LINUX_AT_SECURE, issetugid); AUXARGS_ENTRY_PTR(pos, LINUX_AT_RANDOM, imgp->canary); + AUXARGS_ENTRY(pos, LINUX_AT_HWCAP2, *imgp->sysent->sv_hwcap2); if (imgp->execpathp != 0) AUXARGS_ENTRY_PTR(pos, LINUX_AT_EXECFN, imgp->execpathp); if (args->execfd != -1) @@ -437,6 +438,8 @@ struct sysentvec elf_linux_sysvec = { .sv_schedtail = linux_schedtail, .sv_thread_detach = linux_thread_detach, .sv_trap = linux_vsyscall, + .sv_hwcap = &elf_hwcap, + .sv_hwcap2 = &elf_hwcap2, .sv_onexec = linux_on_exec, .sv_onexit = linux_on_exit, .sv_ontdexit = linux_thread_dtor, |