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| author | Mark Brown <broonie@kernel.org> | 2016-07-29 21:33:51 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-07-29 21:33:51 +0100 |
| commit | ac248a8b81109d6b41a9338a09538e103f7e31c0 (patch) | |
| tree | 27b5fdbdb7e3d24ad8b7f0e5ef45e8065c9f3388 /arch/arm64/include | |
| parent | bd06e78ba67a5ba3c2f8dbf8d0b4a68ddb0fdc05 (diff) | |
| parent | 5808d4c65215bcb6a3fa145965fa9ed0bb3d8f5f (diff) | |
Merge remote-tracking branch 'lsk/v4.4/topic/mm-kaslr' into linux-linaro-lsk-v4.4
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 70f7b9e04598..9ea846ded55c 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -233,4 +233,24 @@ lr .req x30 // link register .long \sym\()_hi32 .endm + /* + * mov_q - move an immediate constant into a 64-bit register using + * between 2 and 4 movz/movk instructions (depending on the + * magnitude and sign of the operand) + */ + .macro mov_q, reg, val + .if (((\val) >> 31) == 0 || ((\val) >> 31) == 0x1ffffffff) + movz \reg, :abs_g1_s:\val + .else + .if (((\val) >> 47) == 0 || ((\val) >> 47) == 0x1ffff) + movz \reg, :abs_g2_s:\val + .else + movz \reg, :abs_g3:\val + movk \reg, :abs_g2_nc:\val + .endif + movk \reg, :abs_g1_nc:\val + .endif + movk \reg, :abs_g0_nc:\val + .endm + #endif /* __ASM_ASSEMBLER_H */ |