From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Wed, 18 Mar 2015 15:55:21 +0100 Subject: [PATCH v5 2/8] arm64: add macros for common adrp usages In-Reply-To: <1426690527-14258-1-git-send-email-ard.biesheuvel@linaro.org> References: <1426690527-14258-1-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <1426690527-14258-3-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The adrp instruction is mostly used in combination with either an add, a ldr or a str instruction with the low bits of the referenced symbol in the 12-bit immediate of the followup instruction. Introduce the macros adr_l, ldr_l and str_l that encapsulate these common patterns. Signed-off-by: Ard Biesheuvel --- arch/arm64/include/asm/assembler.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 750bac4e637e..f1804d4803fb 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -159,4 +159,33 @@ lr .req x30 // link register orr \rd, \lbits, \hbits, lsl #32 .endm +/* + * Pseudo-ops for PC-relative adr/ldr/str , where + * is within the range +/- 4 GB of the PC. + */ + .macro adr_l, dst, sym, tmp= + .ifb \tmp + adrp \dst, \sym + add \dst, \dst, :lo12:\sym + .else + adrp \tmp, \sym + add \dst, \tmp, :lo12:\sym + .endif + .endm + + .macro ldr_l, dst, sym, tmp= + .ifb \tmp + adrp \dst, \sym + ldr \dst, [\dst, :lo12:\sym] + .else + adrp \tmp, \sym + ldr \dst, [\tmp, :lo12:\sym] + .endif + .endm + + .macro str_l, src, sym, tmp + adrp \tmp, \sym + str \src, [\tmp, :lo12:\sym] + .endm + #endif /* __ASM_ASSEMBLER_H */ -- 1.8.3.2