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adds wrapping to all clib symbols

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This commit is contained in:
Eyck Jentzsch 2023-11-23 18:29:26 +01:00
parent acf20a4818
commit 41f204e304
12 changed files with 25 additions and 2 deletions
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3
bare-metal-bsp/libwrap/libwrap.mk
View File

@ -50,7 +50,7 @@ LIBWRAP_SYMS := \
isatty \ isatty \
times \ times \
sbrk _sbrk\ sbrk _sbrk\
_exit \ exit _exit \
puts _puts\ puts _puts\
printf \ printf \
sprintf sprintf
@ -60,6 +60,7 @@ LIBWRAP := libwrap.a
LINK_DEPS += $(LIBWRAP) LINK_DEPS += $(LIBWRAP)
LDFLAGS += $(foreach s,$(LIBWRAP_SYMS),-Wl,--wrap=$(s)) LDFLAGS += $(foreach s,$(LIBWRAP_SYMS),-Wl,--wrap=$(s))
#LDFLAGS += $(foreach s,$(LIBWRAP_SYMS),-Wl,--wrap=_$(s))
LDFLAGS += -L. -Wl,--start-group -lwrap -lc -Wl,--end-group LDFLAGS += -L. -Wl,--start-group -lwrap -lc -Wl,--end-group
CLEAN_OBJS += $(LIBWRAP_OBJS) CLEAN_OBJS += $(LIBWRAP_OBJS)

4
bare-metal-bsp/libwrap/sys/_exit.c
View File

@ -2,12 +2,13 @@
#include <unistd.h> #include <unistd.h>
#include "platform.h" #include "platform.h"
#include "weak_under_alias.h"
extern volatile uint32_t tohost; extern volatile uint32_t tohost;
extern volatile uint32_t fromhost; extern volatile uint32_t fromhost;
void write_hex(int fd, uint32_t hex); void write_hex(int fd, uint32_t hex);
void __wrap__exit(int code) void __wrap_exit(int code)
{ {
//volatile uint32_t* leds = (uint32_t*) (GPIO_BASE_ADDR + GPIO_OUT_OFFSET); //volatile uint32_t* leds = (uint32_t*) (GPIO_BASE_ADDR + GPIO_OUT_OFFSET);
const char message[] = "\nProgam has exited with code:"; const char message[] = "\nProgam has exited with code:";
@ -20,3 +21,4 @@ void __wrap__exit(int code)
write(STDERR_FILENO, "\x04", 1); write(STDERR_FILENO, "\x04", 1);
for (;;); for (;;);
} }
weak_under_alias(exit);

2
bare-metal-bsp/libwrap/sys/execve.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_execve(const char* name, char* const argv[], char* const env[]) int __wrap_execve(const char* name, char* const argv[], char* const env[])
{ {
return _stub(ENOMEM); return _stub(ENOMEM);
} }
weak_under_alias(execve);

2
bare-metal-bsp/libwrap/sys/getpid.c
View File

@ -1,6 +1,8 @@
/* See LICENSE of license details. */ /* See LICENSE of license details. */
#include "weak_under_alias.h"
int __wrap_getpid(void) int __wrap_getpid(void)
{ {
return 1; return 1;
} }
weak_under_alias(getpid);

2
bare-metal-bsp/libwrap/sys/isatty.c
View File

@ -1,6 +1,7 @@
/* See LICENSE of license details. */ /* See LICENSE of license details. */
#include <unistd.h> #include <unistd.h>
#include "weak_under_alias.h"
int __wrap_isatty(int fd) int __wrap_isatty(int fd)
{ {
@ -9,3 +10,4 @@ int __wrap_isatty(int fd)
return 0; return 0;
} }
weak_under_alias(isatty);

2
bare-metal-bsp/libwrap/sys/kill.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_kill(int pid, int sig) int __wrap_kill(int pid, int sig)
{ {
return _stub(EINVAL); return _stub(EINVAL);
} }
weak_under_alias(kill);

2
bare-metal-bsp/libwrap/sys/link.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_link(const char *old_name, const char *new_name) int __wrap_link(const char *old_name, const char *new_name)
{ {
return _stub(EMLINK); return _stub(EMLINK);
} }
weak_under_alias(link);

2
bare-metal-bsp/libwrap/sys/open.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_open(const char* name, int flags, int mode) int __wrap_open(const char* name, int flags, int mode)
{ {
return _stub(ENOENT); return _stub(ENOENT);
} }
weak_under_alias(open);

2
bare-metal-bsp/libwrap/sys/openat.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_openat(int dirfd, const char* name, int flags, int mode) int __wrap_openat(int dirfd, const char* name, int flags, int mode)
{ {
return _stub(ENOENT); return _stub(ENOENT);
} }
weak_under_alias(openat);

2
bare-metal-bsp/libwrap/sys/stat.c
View File

@ -3,8 +3,10 @@
#include <errno.h> #include <errno.h>
#include <sys/stat.h> #include <sys/stat.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_stat(const char* file, struct stat* st) int __wrap_stat(const char* file, struct stat* st)
{ {
return _stub(EACCES); return _stub(EACCES);
} }
weak_under_alias(stat);

2
bare-metal-bsp/libwrap/sys/times.c
View File

@ -3,8 +3,10 @@
#include <errno.h> #include <errno.h>
#include <sys/times.h> #include <sys/times.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
clock_t __wrap_times(struct tms* buf) clock_t __wrap_times(struct tms* buf)
{ {
return _stub(EACCES); return _stub(EACCES);
} }
weak_under_alias(times);

2
bare-metal-bsp/libwrap/sys/unlink.c
View File

@ -2,8 +2,10 @@
#include <errno.h> #include <errno.h>
#include "stub.h" #include "stub.h"
#include "weak_under_alias.h"
int __wrap_unlink(const char* name) int __wrap_unlink(const char* name)
{ {
return _stub(ENOENT); return _stub(ENOENT);
} }
weak_under_alias(unlink);