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authorWaldemar Brodkorb <wbx@openadk.org>2016-02-05 21:07:40 +0100
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-02-07 18:23:22 +0100
commitc0a2d0b7edacbc6389574821b0231e07431dabb6 (patch)
treef2d21c6e2fe8f99ccd820d1d406dc5d51419ba77 /libc/sysdeps/linux
parentb499fe614ac5b492fc0fdc6e1fbbeeb904674159 (diff)
frv: resurrect port somehow, totally untested
The FR-V port is really broken, and I have no emulator or hardware for this platform. I tried to get some hardware from RedHat, who made the FR-V port initially. Unfortunately Fujitsi didn't agreed to sent me some of their unused spare hardware lying @RedHat. As I invested some time to get stuff compiled, I decided to add the code and may be anytime later I can gain access to some emulator or hardware. GDB simulator for FR-V doesn't support booting Linux AFAIK.
Diffstat (limited to 'libc/sysdeps/linux')
-rw-r--r--libc/sysdeps/linux/frv/Makefile59
-rw-r--r--libc/sysdeps/linux/frv/Makefile.arch11
-rw-r--r--libc/sysdeps/linux/frv/bits/fcntl.h3
-rw-r--r--libc/sysdeps/linux/frv/bits/kernel_types.h3
-rw-r--r--libc/sysdeps/linux/frv/bits/stat.h33
-rw-r--r--libc/sysdeps/linux/frv/bits/syscalls.h181
-rw-r--r--libc/sysdeps/linux/frv/bits/uClibc_arch_features.h2
-rw-r--r--libc/sysdeps/linux/frv/crt1.S (renamed from libc/sysdeps/linux/frv/crt0.S)9
-rw-r--r--libc/sysdeps/linux/frv/crtreloc.c50
-rw-r--r--libc/sysdeps/linux/frv/jmpbuf-unwind.h2
-rw-r--r--libc/sysdeps/linux/frv/syscall.c2
11 files changed, 125 insertions, 230 deletions
diff --git a/libc/sysdeps/linux/frv/Makefile b/libc/sysdeps/linux/frv/Makefile
index 7cdb8eca3..3970f6263 100644
--- a/libc/sysdeps/linux/frv/Makefile
+++ b/libc/sysdeps/linux/frv/Makefile
@@ -1,58 +1,13 @@
# Makefile for uClibc
#
# Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
-# ported to FR-V by Alexandre Oliva <aoliva@redhat.com>
#
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+#
-TOPDIR=../../../../
-include $(TOPDIR)Rules.mak
-
-CRT_SRC := crt0.S
-CRT_OBJ := crt0.o crt1.o
-SCRT_OBJ := $(patsubst %,S%, $(CRT_OBJ))
-
-CTOR_TARGETS := crti.o crtn.o
-
-SSRC := __longjmp.S setjmp.S clone.S vfork.S
-SOBJ := $(patsubst %.S,%.o, $(SSRC))
-
-CSRC = sysdep.c syscall.c brk.c sbrk.c __init_brk.c dl-iterate-phdr.c
-CSRC += xstatconv.c stat.c stat64.c fstat.c fstat64.c lstat.c lstat64.c
-COBJ := $(patsubst %.c,%.o, $(CSRC))
-
-OBJS := $(SOBJ) $(COBJ)
-
-OBJ_LIST := ../../../obj.sysdeps.$(TARGET_ARCH)
-
-all: $(OBJ_LIST)
-
-$(OBJ_LIST): $(OBJS) $(CRT_OBJ) $(SCRT_OBJ) $(CTOR_TARGETS)
- $(STRIPTOOL) -x -R .note -R .comment $^
- $(INSTALL) -d $(TOPDIR)lib/
- cp $(CRT_OBJ) $(SCRT_OBJ) $(CTOR_TARGETS) $(TOPDIR)lib/
- echo $(patsubst %, sysdeps/linux/$(TARGET_ARCH)/%, $(OBJS)) > $@
-
-$(CRT_OBJ): $(CRT_SRC) crtreloc.o
- $(CC) $(ASFLAGS) -DL_$* -r -nostdlib $^ -o $*.o
-
-crtreloc.o: crtreloc.c
- $(CC) $(CFLAGS) -c $< -o $@
-
-$(SCRT_OBJ): $(CRT_SRC) Scrtreloc.o
- $(CC) $(ASFLAGS) $(PIEFLAG) -DL_$* -r -nostdlib $^ -o $*.o
-
-Scrtreloc.o: crtreloc.c
- $(CC) $(CFLAGS) $(PIEFLAG) -c $< -o $@
-
-$(CTOR_TARGETS): %.o : %.S
- $(CC) $(ASFLAGS) $(SSP_DISABLE_FLAGS) -c $< -o $@
-
-$(SOBJ): %.o : %.S
- $(CC) $(ASFLAGS) -c $< -o $@
-
-$(COBJ): %.o : %.c
- $(CC) $(CFLAGS) -c $< -o $@
-
-clean:
- $(RM) *.o *~ core
+top_srcdir=../../../../
+top_builddir=../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libc/sysdeps/linux/frv/Makefile.arch b/libc/sysdeps/linux/frv/Makefile.arch
new file mode 100644
index 000000000..be48fd007
--- /dev/null
+++ b/libc/sysdeps/linux/frv/Makefile.arch
@@ -0,0 +1,11 @@
+# Makefile for uClibc
+#
+# Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+# ported to FR-V by Alexandre Oliva <aoliva@redhat.com>
+#
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+
+CSRC-y := sysdep.c syscall.c brk.c sbrk.c __init_brk.c dl-iterate-phdr.c
+
+SSRC-y := __longjmp.S setjmp.S clone.S vfork.S
+
diff --git a/libc/sysdeps/linux/frv/bits/fcntl.h b/libc/sysdeps/linux/frv/bits/fcntl.h
index 0ef5f29e9..0581f2bf3 100644
--- a/libc/sysdeps/linux/frv/bits/fcntl.h
+++ b/libc/sysdeps/linux/frv/bits/fcntl.h
@@ -22,6 +22,9 @@
#include <sys/types.h>
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
located on an ext2 file system */
diff --git a/libc/sysdeps/linux/frv/bits/kernel_types.h b/libc/sysdeps/linux/frv/bits/kernel_types.h
index 8403fd3e8..be4fe224f 100644
--- a/libc/sysdeps/linux/frv/bits/kernel_types.h
+++ b/libc/sysdeps/linux/frv/bits/kernel_types.h
@@ -31,6 +31,9 @@ typedef unsigned int __kernel_gid32_t;
typedef unsigned short __kernel_old_uid_t;
typedef unsigned short __kernel_old_gid_t;
typedef long long __kernel_loff_t;
+typedef __kernel_dev_t __kernel_old_dev_t;
+typedef long __kernel_long_t;
+typedef unsigned long __kernel_ulong_t;
typedef struct {
#ifdef __USE_ALL
diff --git a/libc/sysdeps/linux/frv/bits/stat.h b/libc/sysdeps/linux/frv/bits/stat.h
index 83f5b4726..e6a1944bb 100644
--- a/libc/sysdeps/linux/frv/bits/stat.h
+++ b/libc/sysdeps/linux/frv/bits/stat.h
@@ -70,6 +70,20 @@ struct stat
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
#endif
+#ifdef __USE_MISC
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
unsigned long int __unused1;
__time_t st_atime; /* Time of last access. */
@@ -78,7 +92,7 @@ struct stat
unsigned long int __unused3;
__time_t st_ctime; /* Time of last status change. */
-
+#endif
unsigned long long __unused4;
};
@@ -103,7 +117,20 @@ struct stat64
__blksize_t st_blksize; /* Optimal block size for I/O. */
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-
+#ifdef __USE_MISC
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
unsigned long int __unused1;
__time_t st_atime; /* Time of last access. */
@@ -112,7 +139,7 @@ struct stat64
unsigned long int __unused3;
__time_t st_ctime; /* Time of last status change. */
-
+#endif
unsigned long long __unused4;
};
#endif
diff --git a/libc/sysdeps/linux/frv/bits/syscalls.h b/libc/sysdeps/linux/frv/bits/syscalls.h
index b1f532040..b03e8dbe0 100644
--- a/libc/sysdeps/linux/frv/bits/syscalls.h
+++ b/libc/sysdeps/linux/frv/bits/syscalls.h
@@ -10,128 +10,71 @@
#define SYS_ify(syscall_name) (__NR_##syscall_name)
-/* user-visible error numbers are in the range -1 - -4095: see <asm-frv/errno.h> */
-#if defined _LIBC && !defined __set_errno
-# define __syscall_return(type, res) \
-do { \
- unsigned long __sr2 = (res); \
- if (unlikely ((unsigned long)(__sr2) >= (unsigned long)(-4095))) { \
- extern int __syscall_error (int); \
- return (type) __syscall_error (__sr2); \
- } \
- return (type) (__sr2); \
-} while (0)
-#else
-# define __syscall_return(type, res) \
-do { \
- unsigned long __sr2 = (res); \
- if (unlikely ((unsigned long)(__sr2) >= (unsigned long)(-4095))) { \
- __set_errno (-__sr2); \
- __sr2 = -1; \
- } \
- return (type) (__sr2); \
-} while (0)
-#endif
-
-#ifndef __set_errno
-# define __set_errno(val) ((*__errno_location ()) = (val))
-#endif
-
-/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
-
-#define _syscall0(type,name) \
-type name(void) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8"); \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "=r" (__sc0) \
- : "r" (__scnum)); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall1(type,name,type1,arg1) \
-type name(type1 arg1) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum)); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-type name(type1 arg1,type2 arg2) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum), "r" (__sc1)); \
-__syscall_return(type,__sc0); \
-}
-
-#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
-type name(type1 arg1,type2 arg2,type3 arg3) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \
-register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum), "r" (__sc1), "r" (__sc2)); \
-__syscall_return(type,__sc0); \
-}
+#define INLINE_SYSCALL_NCS(name, nr, args...) \
+(__extension__ \
+ ({ \
+ unsigned int _inline_sys_result = INTERNAL_SYSCALL_NCS (name, , nr, args);\
+ if (unlikely (INTERNAL_SYSCALL_ERROR_P (_inline_sys_result, ))) \
+ { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (_inline_sys_result, )); \
+ _inline_sys_result = (unsigned int) -1; \
+ } \
+ (int) _inline_sys_result; \
+ }) \
+)
-#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \
-register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \
-register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum), "r" (__sc1), "r" (__sc2), "r" (__sc3)); \
-__syscall_return(type,__sc0); \
-}
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+(__extension__ \
+ ({unsigned int __internal_sys_result; \
+ { \
+ register int __a1 __asm__ ("gr8"); \
+ register int _nr __asm__ ("gr7"); \
+ LOAD_ARGS_##nr (args) \
+ _nr = (name); \
+ __asm__ __volatile__ ("tra gr0,gr0" \
+ : "=r" (__a1) \
+ : "r" (_nr) ASM_ARGS_##nr \
+ : "memory"); \
+ __internal_sys_result = __a1; \
+ } \
+ (int) __internal_sys_result; }) \
+)
-#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \
-register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \
-register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \
-register unsigned long __sc4 __asm__ ("gr12") = (unsigned long) arg5; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum), "r" (__sc1), "r" (__sc2), \
- "r" (__sc3), "r" (__sc4)); \
-__syscall_return(type,__sc0); \
-}
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned int) (val) >= 0xfffff001u)
-#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) \
-{ \
-register unsigned long __scnum __asm__ ("gr7") = (__NR_##name); \
-register unsigned long __sc0 __asm__ ("gr8") = (unsigned long) arg1; \
-register unsigned long __sc1 __asm__ ("gr9") = (unsigned long) arg2; \
-register unsigned long __sc2 __asm__ ("gr10") = (unsigned long) arg3; \
-register unsigned long __sc3 __asm__ ("gr11") = (unsigned long) arg4; \
-register unsigned long __sc4 __asm__ ("gr12") = (unsigned long) arg5; \
-register unsigned long __sc5 __asm__ ("gr13") = (unsigned long) arg6; \
-__asm__ __volatile__ ("tra gr0,gr0" \
- : "+r" (__sc0) \
- : "r" (__scnum), "r" (__sc1), "r" (__sc2), \
- "r" (__sc3), "r" (__sc4), "r" (__sc5)); \
-__syscall_return(type,__sc0); \
-}
+#define LOAD_ARGS_0()
+#define ASM_ARGS_0
+#define LOAD_ARGS_1(a1) \
+ int __a1tmp = (int) (a1); \
+ LOAD_ARGS_0 () \
+ __a1 = __a1tmp;
+#define ASM_ARGS_1 ASM_ARGS_0, "r" (__a1)
+#define LOAD_ARGS_2(a1, a2) \
+ int __a2tmp = (int) (a2); \
+ LOAD_ARGS_1 (a1) \
+ register int __a2 __asm__ ("gr8") = __a2tmp;
+#define ASM_ARGS_2 ASM_ARGS_1, "r" (__a2)
+#define LOAD_ARGS_3(a1, a2, a3) \
+ int __a3tmp = (int) (a3); \
+ LOAD_ARGS_2 (a1, a2) \
+ register int __a3 __asm__ ("gr9") = __a3tmp;
+#define ASM_ARGS_3 ASM_ARGS_2, "r" (__a3)
+#define LOAD_ARGS_4(a1, a2, a3, a4) \
+ int __a4tmp = (int) (a4); \
+ LOAD_ARGS_3 (a1, a2, a3) \
+ register int __a4 __asm__ ("gr10") = __a4tmp;
+#define ASM_ARGS_4 ASM_ARGS_3, "r" (__a4)
+#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
+ int __v1tmp = (int) (a5); \
+ LOAD_ARGS_4 (a1, a2, a3, a4) \
+ register int __v1 __asm__ ("gr11") = __v1tmp;
+#define ASM_ARGS_5 ASM_ARGS_4, "r" (__v1)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
+ int __v2tmp = (int) (a6); \
+ LOAD_ARGS_5 (a1, a2, a3, a4, a5) \
+ register int __v2 __asm__ ("gr12") = __v2tmp;
+#define ASM_ARGS_6 ASM_ARGS_5, "r" (__v2)
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
diff --git a/libc/sysdeps/linux/frv/bits/uClibc_arch_features.h b/libc/sysdeps/linux/frv/bits/uClibc_arch_features.h
index 293cc9b00..f660fd223 100644
--- a/libc/sysdeps/linux/frv/bits/uClibc_arch_features.h
+++ b/libc/sysdeps/linux/frv/bits/uClibc_arch_features.h
@@ -37,6 +37,6 @@
#define __UCLIBC_HAVE_SIGNED_ZERO__
/* only weird assemblers generally need this */
-#undef __UCLIBC_ASM_LINE_SEP__
+#define __UCLIBC_ASM_LINE_SEP__ !
#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */
diff --git a/libc/sysdeps/linux/frv/crt0.S b/libc/sysdeps/linux/frv/crt1.S
index 59f61f94f..0827feae7 100644
--- a/libc/sysdeps/linux/frv/crt0.S
+++ b/libc/sysdeps/linux/frv/crt1.S
@@ -44,13 +44,10 @@ not, see <http://www.gnu.org/licenses/>. */
.text
.global _start
.type _start,%function
-#if defined L_crt0 || defined L_Scrt0 || ! defined __UCLIBC_CTOR_DTOR__
- .type __uClibc_main,%function
-#else
.weak _init
.weak _fini
- .type __uClibc_start_main,%function
-#endif
+ .type __uClibc_main,%function
+
_start:
/* Make sure the stack pointer is properly aligned. Save the
original value in gr21 such that we can get to arguments and
@@ -104,7 +101,7 @@ _start:
ld.p @(gr11, gr17), gr11
mov gr17, gr15
ld.p @(gr12, gr17), gr12
- call __uClibc_start_main
+ call __uClibc_main
#else
mov.p gr17, gr15
call __uClibc_main
diff --git a/libc/sysdeps/linux/frv/crtreloc.c b/libc/sysdeps/linux/frv/crtreloc.c
index cd07170a8..b1d542395 100644
--- a/libc/sysdeps/linux/frv/crtreloc.c
+++ b/libc/sysdeps/linux/frv/crtreloc.c
@@ -25,6 +25,8 @@ You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
+#ifdef __FRV_FDPIC__
+
#include <sys/types.h>
#include <link.h>
@@ -61,7 +63,7 @@ reloc_range_indirect (void ***p, void ***e,
/* Call __reloc_range_indirect for the given range except for the last
entry, whose contents are only relocated. It's expected to hold
the GOT value. */
-void* attribute_hidden
+attribute_hidden void*
__self_reloc (const struct elf32_fdpic_loadmap *map,
void ***p, void ***e)
{
@@ -72,48 +74,4 @@ __self_reloc (const struct elf32_fdpic_loadmap *map,
return __reloc_pointer (*p, map);
}
-
-#if 0
-/* These are other functions that might be useful, but that we don't
- need. */
-
-/* Remap pointers in [p,e). */
-static __always_inline void**
-reloc_range (void **p, void **e,
- const struct elf32_fdpic_loadmap *map)
-{
- while (p < e)
- {
- *p = __reloc_pointer (*p, map);
- p++;
- }
- return p;
-}
-
-/* Remap p, adjust e by the same offset, then map the pointers in the
- range determined by them. */
-void attribute_hidden
-__reloc_range (const struct elf32_fdpic_loadmap *map,
- void **p, void **e)
-{
- void **old = p;
-
- p = __reloc_pointer (p, map);
- e += p - old;
- reloc_range (p, e, map);
-}
-
-/* Remap p, adjust e by the same offset, then map pointers referenced
- by the (unadjusted) pointers in the range. Return the relocated
- value of the last pointer in the range. */
-void* attribute_hidden
-__reloc_range_indirect (const struct elf32_fdpic_loadmap *map,
- void ***p, void ***e)
-{
- void ***old = p;
-
- p = __reloc_pointer (p, map);
- e += p - old;
- return reloc_range_indirect (p, e, map);
-}
-#endif
+#endif /* __FRV_FDPIC__ */
diff --git a/libc/sysdeps/linux/frv/jmpbuf-unwind.h b/libc/sysdeps/linux/frv/jmpbuf-unwind.h
index b58f3f0e3..c22ab2409 100644
--- a/libc/sysdeps/linux/frv/jmpbuf-unwind.h
+++ b/libc/sysdeps/linux/frv/jmpbuf-unwind.h
@@ -10,5 +10,3 @@
containing a local variable at ADDRESS. */
#define _JMPBUF_UNWINDS(jmpbuf, address) \
((void *) (address) < (void *) (jmpbuf)->__sp)
-
-#endif /* bits/setjmp.h */
diff --git a/libc/sysdeps/linux/frv/syscall.c b/libc/sysdeps/linux/frv/syscall.c
index 68fe55696..a98cf3832 100644
--- a/libc/sysdeps/linux/frv/syscall.c
+++ b/libc/sysdeps/linux/frv/syscall.c
@@ -37,5 +37,5 @@ long syscall(long sysnum, long arg1, long arg2, long arg3,
: "+r" (__sc0)
: "r" (__scnum), "r" (__sc1), "r" (__sc2),
"r" (__sc3), "r" (__sc4), "r" (__sc5));
- __syscall_return(long,__sc0);
+ return (long) __sc0;
}