diff options
Diffstat (limited to 'sys/amd64/amd64/elf_machdep.c')
| -rw-r--r-- | sys/amd64/amd64/elf_machdep.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sys/amd64/amd64/elf_machdep.c b/sys/amd64/amd64/elf_machdep.c index fdc4d56..23fa39b 100644 --- a/sys/amd64/amd64/elf_machdep.c +++ b/sys/amd64/amd64/elf_machdep.c @@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$"); #include <vm/vm_param.h> #include <machine/elf.h> +#include <machine/fpu.h> #include <machine/md_var.h> struct sysentvec elf64_freebsd_sysvec = { @@ -133,12 +134,27 @@ SYSINIT(kelf64, SI_SUB_EXEC, SI_ORDER_ANY, &kfreebsd_brand_info); void -elf64_dump_thread(struct thread *td __unused, void *dst __unused, - size_t *off __unused) +elf64_dump_thread(struct thread *td, void *dst, size_t *off) { + void *buf; + size_t len; + + len = 0; + if (use_xsave) { + if (dst != NULL) { + fpugetregs(td); + len += elf64_populate_note(NT_X86_XSTATE, + get_pcb_user_save_td(td), dst, + cpu_max_ext_state_size, &buf); + *(uint64_t *)((char *)buf + X86_XSTATE_XCR0_OFFSET) = + xsave_mask; + } else + len += elf64_populate_note(NT_X86_XSTATE, NULL, NULL, + cpu_max_ext_state_size, NULL); + } + *off = len; } - /* Process one elf relocation with addend. */ static int elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, |
