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| author | Will Deacon <will@kernel.org> | 2020-05-15 16:46:46 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-05-18 19:47:37 +0300 |
| commit | 711e8b0de0d63c70c825b473da01288b661a2386 (patch) | |
| tree | d1fb5526919228e698d7687d73ab0017931910d7 /arch/arm64/include | |
| parent | bee348fab099b0f551caa874663e82a7f3bb64b3 (diff) | |
| download | linux-711e8b0de0d63c70c825b473da01288b661a2386.tar.xz | |
arm64: scs: Use 'scs_sp' register alias for x18
x18 holds the SCS stack pointer value, so introduce a register alias to
make this easier to read in assembly code.
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/scs.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/scs.h b/arch/arm64/include/asm/scs.h index 6b8cf4352fe3..d46efdd2060a 100644 --- a/arch/arm64/include/asm/scs.h +++ b/arch/arm64/include/asm/scs.h @@ -7,12 +7,14 @@ #include <asm/asm-offsets.h> #ifdef CONFIG_SHADOW_CALL_STACK + scs_sp .req x18 + .macro scs_load tsk, tmp - ldr x18, [\tsk, #TSK_TI_SCS_SP] + ldr scs_sp, [\tsk, #TSK_TI_SCS_SP] .endm .macro scs_save tsk, tmp - str x18, [\tsk, #TSK_TI_SCS_SP] + str scs_sp, [\tsk, #TSK_TI_SCS_SP] .endm #else .macro scs_load tsk, tmp |