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/* 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
#if CONFIG_SYS_ARM_ARCH < 7
/* Before the ARMv7 exception model, svc (swi) clobbers lr */
mov r2, lr
#endif
svc #0x123456
#endif
#if defined(CONFIG_ARM64)
ret
#elif CONFIG_SYS_ARM_ARCH < 7
bx r2
#else
bx lr
#endif
ENDPROC(smh_trap)
.popsection
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