From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/arm/include/asm/compiler.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 arch/arm/include/asm/compiler.h (limited to 'arch/arm/include/asm/compiler.h') diff --git a/arch/arm/include/asm/compiler.h b/arch/arm/include/asm/compiler.h new file mode 100644 index 000000000..29fe85e59 --- /dev/null +++ b/arch/arm/include/asm/compiler.h @@ -0,0 +1,28 @@ +#ifndef __ASM_ARM_COMPILER_H +#define __ASM_ARM_COMPILER_H + +/* + * This is used to ensure the compiler did actually allocate the register we + * asked it for some inline assembly sequences. Apparently we can't trust + * the compiler from one version to another so a bit of paranoia won't hurt. + * This string is meant to be concatenated with the inline asm string and + * will cause compilation to stop on mismatch. + * (for details, see gcc PR 15089) + * For compatibility with clang, we have to specifically take the equivalence + * of 'r11' <-> 'fp' and 'r12' <-> 'ip' into account as well. + */ +#define __asmeq(x, y) \ + ".ifnc " x "," y "; " \ + ".ifnc " x y ",fpr11; " \ + ".ifnc " x y ",r11fp; " \ + ".ifnc " x y ",ipr12; " \ + ".ifnc " x y ",r12ip; " \ + ".err; " \ + ".endif; " \ + ".endif; " \ + ".endif; " \ + ".endif; " \ + ".endif\n\t" + + +#endif /* __ASM_ARM_COMPILER_H */ -- cgit v1.2.3-54-g00ecf