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Diffstat (limited to 'arch/arm64/lib/semihosting.S')
| -rw-r--r-- | arch/arm64/lib/semihosting.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm64/lib/semihosting.S b/arch/arm64/lib/semihosting.S new file mode 100644 index 0000000..6e3fc31 --- /dev/null +++ b/arch/arm64/lib/semihosting.S @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * semihosting.S - the trap instruction itself. qemu answers this when + * it is started with -semihosting, and nothing happens without it, so + * every caller has to cope with the no-debugger case. + * + * Copyright (C) 2026 Bradley Morgan <brads@mainlining.org> + */ + +#include <asm/linkage.h> + +.pushsection .text.smh_trap, "ax" +/* long smh_trap(unsigned int sysnum, void *addr); */ +ENTRY(smh_trap) + hlt #0xf000 + ret +ENDPROC(smh_trap) +.popsection |