From 5b3f39cb04fda32226e84502f858bab06d83e5c1 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 28 Apr 2022 01:44:28 -0700 Subject: semihosting: Split out semihost_sys_open Split out the non-ARM specific portions of SYS_OPEN to a reusable function. This handles gdb and host file i/o. Add helpers to validate the length of the filename string. Prepare for usage by other semihosting by allowing the filename length parameter to be 0, and calling strlen. Reviewed-by: Luc Michel Signed-off-by: Richard Henderson --- include/semihosting/syscalls.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 include/semihosting/syscalls.h (limited to 'include/semihosting') diff --git a/include/semihosting/syscalls.h b/include/semihosting/syscalls.h new file mode 100644 index 0000000000..991658bf79 --- /dev/null +++ b/include/semihosting/syscalls.h @@ -0,0 +1,25 @@ +/* + * Syscall implementations for semihosting. + * + * Copyright (c) 2022 Linaro + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef SEMIHOSTING_SYSCALLS_H +#define SEMIHOSTING_SYSCALLS_H + +/* + * Argument loading from the guest is performed by the caller; + * results are returned via the 'complete' callback. + * + * String operands are in address/len pairs. The len argument may be 0 + * (when the semihosting abi does not already provide the length), + * or non-zero (where it should include the terminating zero). + */ + +void semihost_sys_open(CPUState *cs, gdb_syscall_complete_cb complete, + target_ulong fname, target_ulong fname_len, + int gdb_flags, int mode); + +#endif /* SEMIHOSTING_SYSCALLS_H */ -- cgit v1.2.3