This exports semihosting functions for use in other files. The header is in include/ and not arm/include/asm because I anticipate that RISC-V may want to add their own implementation at some point.
smh_len_fd has been renamed to smh_flen to more closely match the semihosting spec.
Signed-off-by: Sean Anderson sean.anderson@seco.com ---
arch/arm/lib/semihosting.c | 11 ++++++----- include/semihosting.h | 14 ++++++++++++++ 2 files changed, 20 insertions(+), 5 deletions(-) create mode 100644 include/semihosting.h
diff --git a/arch/arm/lib/semihosting.c b/arch/arm/lib/semihosting.c index 9fd82459b2..c38892fdd8 100644 --- a/arch/arm/lib/semihosting.c +++ b/arch/arm/lib/semihosting.c @@ -15,6 +15,7 @@ #include <command.h> #include <env.h> #include <log.h> +#include <semihosting.h>
#define SYSOPEN 0x01 #define SYSCLOSE 0x02 @@ -45,7 +46,7 @@ static noinline long smh_trap(unsigned int sysnum, void *addr) * Open a file on the host. Mode is "r" or "rb" currently. Returns a file * descriptor or -1 on error. */ -static long smh_open(const char *fname, char *modestr) +long smh_open(const char *fname, char *modestr) { long fd; unsigned long mode; @@ -84,7 +85,7 @@ static long smh_open(const char *fname, char *modestr) /* * Read 'len' bytes of file into 'memp'. Returns 0 on success, else failure */ -static long smh_read(long fd, void *memp, size_t len) +long smh_read(long fd, void *memp, size_t len) { long ret; struct smh_read_s { @@ -118,7 +119,7 @@ static long smh_read(long fd, void *memp, size_t len) /* * Close the file using the file descriptor */ -static long smh_close(long fd) +long smh_close(long fd) { long ret;
@@ -134,7 +135,7 @@ static long smh_close(long fd) /* * Get the file length from the file descriptor */ -static long smh_len_fd(long fd) +long smh_flen(long fd) { long ret;
@@ -158,7 +159,7 @@ static int smh_load_file(const char * const name, ulong load_addr, if (fd == -1) return -1;
- len = smh_len_fd(fd); + len = smh_flen(fd); if (len < 0) { smh_close(fd); return -1; diff --git a/include/semihosting.h b/include/semihosting.h new file mode 100644 index 0000000000..3843863046 --- /dev/null +++ b/include/semihosting.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2022 Sean Anderson sean.anderson@seco.com + */ + +#ifndef _SEMIHOSTING_H +#define _SEMIHOSTING_H + +long smh_open(const char *fname, char *modestr); +long smh_read(long fd, void *memp, size_t len); +long smh_close(long fd); +long smh_flen(long fd); + +#endif /* _SEMIHOSTING_H */