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/* SPDX-License-Identifier: GPL-2.0 */
#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"
/*
* This is used for calling exported symbols from inline assembly code.
*/
#if defined(MODULE) && defined(CONFIG_MODULES_USE_LONG_CALLS)
#define __asmbl(cond, reg, target) \
"movw " reg ", #:lower16:" target "\n\t" \
"movt " reg ", #:upper16:" target "\n\t" \
"blx" cond " " reg "\n\t"
#define __asmbl_clobber(reg) ,reg
#else
#define __asmbl(cond, reg, target) "bl" cond " " target"\n\t"
#define __asmbl_clobber(reg)
#endif
#endif /* __ASM_ARM_COMPILER_H */
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