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5 Commits

Author SHA1 Message Date
Fangrui Song
bf433b849a elf: Remove Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) 
Intel MPX failed to gain wide adoption and has been deprecated for a
while. GCC 9.1 removed Intel MPX support. Linux kernel removed MPX in
2019.

This patch removes the support code from the dynamic loader.

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
 2021-10-11 11:14:02 -07:00
Marko Myllynen
30477995dc Replace __int128 with __int128_t 
* sysdeps/x86_64/link-defines.sym (BND_SIZE): Replace __int128
	with __int128_t.
 2014-05-30 10:50:21 -07:00
Igor Zamyatin
ea8ba7cd14 Save/restore bound registers for _dl_runtime_profile 
This patch saves and restores bound registers in x86-64 PLT for
ld.so profile and LD_AUDIT:

	* sysdeps/x86_64/bits/link.h (La_x86_64_regs): Add lr_bnd.
	(La_x86_64_retval): Add lrv_bnd0 and lrv_bnd1.
	* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Save
	Intel MPX bound registers before _dl_profile_fixup.
	* sysdeps/x86_64/dl-trampoline.h: Restore Intel MPX bound
	registers after _dl_profile_fixup.  Save and restore bound
	registers bnd0/bnd1 when calling _dl_call_pltexit.
	* sysdeps/x86_64/link-defines.sym (BND_SIZE): New.
	(LR_BND_OFFSET): Likewise.
	(LRV_BND0_OFFSET): Likewise.
	(LRV_BND1_OFFSET): Likewise.
 2014-04-16 14:46:49 -07:00
Igor Zamyatin
2d63a517e4 Save and restore AVX-512 zmm registers to x86-64 ld.so 
AVX-512 ISA adds 512-bit zmm registers.  This patch updates
_dl_runtime_profile to pass zmm registers to run-time audit. It also
changes _dl_x86_64_save_sse and _dl_x86_64_restore_sse to upport zmm
registers, which are called when only when RTLD_PREPARE_FOREIGN_CALL
is used.  Its performance impact is minimum.

	* config.h.in (HAVE_AVX512_SUPPORT): New #undef.
	(HAVE_AVX512_ASM_SUPPORT): Likewise.
	* sysdeps/x86_64/bits/link.h (La_x86_64_zmm): New.
	(La_x86_64_vector): Add zmm.
	* sysdeps/x86_64/Makefile (tests): Add tst-audit10.
	(modules-names): Add tst-auditmod10a and tst-auditmod10b.
	($(objpfx)tst-audit10): New target.
	($(objpfx)tst-audit10.out): Likewise.
	(tst-audit10-ENV): New.
	(AVX512-CFLAGS): Likewise.
	(CFLAGS-tst-audit10.c): Likewise.
	(CFLAGS-tst-auditmod10a.c): Likewise.
	(CFLAGS-tst-auditmod10b.c): Likewise.
	* sysdeps/x86_64/configure.ac: Set config-cflags-avx512,
	HAVE_AVX512_SUPPORT and HAVE_AVX512_ASM_SUPPORT.
	* sysdeps/x86_64/configure: Regenerated.
	* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Add
	AVX-512 zmm register support.
	(_dl_x86_64_save_sse): Likewise.
	(_dl_x86_64_restore_sse): Likewise.
	* sysdeps/x86_64/dl-trampoline.h: Updated to support different
	size vector registers.
	* sysdeps/x86_64/link-defines.sym (YMM_SIZE): New.
	(ZMM_SIZE): Likewise.
	* sysdeps/x86_64/tst-audit10.c: New file.
	* sysdeps/x86_64/tst-auditmod10a.c: Likewise.
	* sysdeps/x86_64/tst-auditmod10b.c: Likewise.
 2014-03-13 11:19:08 -07:00
H.J. Lu
b0ecde3a63 Add AVX support to ld.so auditing for x86-64. 2009-07-10 12:04:14 -07:00