diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-10-22 09:13:22 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-29 15:15:20 +0300 |
| commit | aebd1fb45c622e9a2b06fb70665d084d3a8d6c78 (patch) | |
| tree | bbaa2fbe8031777db50609e15349c1f35344e10f /arch/powerpc/kernel/exceptions-64s.S | |
| parent | e012c499985c608c936410d8bab29d9596d62859 (diff) | |
| download | linux-aebd1fb45c622e9a2b06fb70665d084d3a8d6c78.tar.xz | |
powerpc: flexible GPR range save/restore macros
Introduce macros that operate on a (start, end) range of GPRs, which
reduces lines of code and need to do mental arithmetic while reading the
code.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211022061322.2671178-1-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index eaf1f72131a1..277eccf0f086 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -574,8 +574,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR) ld r10,IAREA+EX_CTR(r13) std r10,_CTR(r1) std r2,GPR2(r1) /* save r2 in stackframe */ - SAVE_4GPRS(3, r1) /* save r3 - r6 in stackframe */ - SAVE_2GPRS(7, r1) /* save r7, r8 in stackframe */ + SAVE_GPRS(3, 8, r1) /* save r3 - r8 in stackframe */ mflr r9 /* Get LR, later save to stack */ ld r2,PACATOC(r13) /* get kernel TOC into r2 */ std r9,_LINK(r1) @@ -693,8 +692,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR) mtlr r9 ld r9,_CCR(r1) mtcr r9 - REST_8GPRS(2, r1) - REST_4GPRS(10, r1) + REST_GPRS(2, 13, r1) REST_GPR(0, r1) /* restore original r1. */ ld r1,GPR1(r1) |