diff options
Diffstat (limited to 'arch/arm/lib/semihosting.S')
| -rw-r--r-- | arch/arm/lib/semihosting.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/lib/semihosting.S b/arch/arm/lib/semihosting.S new file mode 100644 index 0000000000..393aade94a --- /dev/null +++ b/arch/arm/lib/semihosting.S @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) 2022 Arm Ltd. + */ + +#include <config.h> +#include <asm/macro.h> +#include <linux/linkage.h> + +.pushsection .text.smh_trap, "ax" +/* long smh_trap(unsigned int sysnum, void *addr); */ +ENTRY(smh_trap) + +#if defined(CONFIG_ARM64) + hlt #0xf000 +#elif defined(CONFIG_CPU_V7M) + bkpt #0xab +#elif defined(CONFIG_SYS_THUMB_BUILD) + svc #0xab +#else + svc #0x123456 +#endif + +#if defined(CONFIG_ARM64) + ret +#else + bx lr +#endif + +ENDPROC(smh_trap) +.popsection |