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Michael Ellerman 06d0bbc6d0 powerpc/asm: Add a patch_site macro & helpers for patching instructions 
Add a macro and some helper C functions for patching single asm
instructions.

The gas macro means we can do something like:

  1:	nop
  	patch_site 1b, patch__foo

Which is less visually distracting than defining a GLOBAL symbol at 1,
and also doesn't pollute the symbol table which can confuse eg. perf.

These are obviously similar to our existing feature sections, but are
not automatically patched based on CPU/MMU features, rather they are
designed to be manually patched by C code at some arbitrary point.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 		2018-08-08 00:32:25 +10:00
..
Makefile powerpc/lib: Implement strlen() in assembly for PPC32 2018-08-07 21:49:30 +10:00
alloc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum_32.S powerpc: Implement csum_ipv6_magic in assembly 2018-06-04 00:39:19 +10:00
checksum_64.S powerpc: Implement csum_ipv6_magic in assembly 2018-06-04 00:39:19 +10:00
checksum_wrappers.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
code-patching.c powerpc/asm: Add a patch_site macro & helpers for patching instructions 2018-08-08 00:32:25 +10:00
copy_32.S powerpc/32: remove a NOP from memset() 2017-09-01 16:42:46 +10:00
copypage_64.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
copypage_power7.S powerpc/64: enhance memcmp() with VMX instruction for long bytes comparision 2018-07-24 22:03:21 +10:00
copyuser_64.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
copyuser_power7.S powerpc/64s: Set assembler machine type to POWER4 2018-04-01 00:47:49 +11:00
crtsavres.S powerpc/64: Do not create new section for save/restore functions 2017-05-30 14:59:51 +10:00
div64.S powerpc: Fix a corner case in __div64_32 2005-10-20 09:37:02 +10:00
feature-fixups-test.S powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
feature-fixups.c powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E 2018-08-08 00:32:24 +10:00
hweight_64.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
ldstfp.S powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
locks.c powerpc: clean the inclusion of stringify.h 2018-07-30 22:48:17 +10:00
mem_64.S powerpc/string: Implement optimized memset variants 2017-08-17 23:04:35 +10:00
memcmp_32.S powerpc/lib: optimise PPC32 memcmp 2018-06-04 00:39:21 +10:00
memcmp_64.S powerpc/64: add 32 bytes prechecking before using VMX optimization on memcmp() 2018-07-24 22:03:21 +10:00
memcpy_64.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
memcpy_power7.S powerpc/64: enhance memcmp() with VMX instruction for long bytes comparision 2018-07-24 22:03:21 +10:00
pmem.c powerpc/lib: Implement UACCESS_FLUSHCACHE API 2017-11-13 08:00:31 +11:00
quad.S powerpc: Handle most loads and stores in instruction emulation code 2017-09-01 16:39:48 +10:00
rheap.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
sstep.c powerpc/sstep: Fix kernel crash if VSX is not present 2018-06-04 00:39:08 +10:00
string.S powerpc/lib: optimise PPC32 memcmp 2018-06-04 00:39:21 +10:00
string_32.S powerpc/lib: optimise 32 bits __clear_user() 2018-06-04 00:39:21 +10:00
string_64.S powerpc: Fix invalid use of register expressions 2017-08-10 22:29:41 +10:00
strlen_32.S powerpc/lib: Implement strlen() in assembly for PPC32 2018-08-07 21:49:30 +10:00
test_emulate_step.c powerpc/sstep: Fix emulate_step test if VSX not present 2018-06-04 00:39:14 +10:00
vmx-helper.c powerpc/64: enhance memcmp() with VMX instruction for long bytes comparision 2018-07-24 22:03:21 +10:00
xor_vmx.c powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00
xor_vmx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xor_vmx_glue.c powerpc/altivec: Add missing prototypes for altivec 2018-05-25 12:04:38 +10:00