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authorGuo Ren <ren_guo@c-sky.com>2017-10-15 20:59:34 +0800
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2017-11-19 09:20:11 +0100
commit2fcffe26e815b7125a357c83b59617ab93c16b41 (patch)
treefe5a973dc4bbf38bce8468a4497f5f656f082a9f /libc/sysdeps/linux/csky/bits/syscalls.h
parent9e38e0aa45cca21d5023d0af94377f0e1e41d2f4 (diff)
csky: port to uclibc-ng
Follow the steps to build c-sky uclibc linux system: 1. git clone https://github.com/c-sky/buildroot.git 2. cd buildroot 3. make qemu_csky_ck810_uclibc_defconfig 4. make Follow the buildroot/board/qemu/csky/readme.txt to run. This buildroot toolchain is pre-build, But you can rebuild the c-sky uclibc-ng alone and install it to the buildroot sysroot manually. We'll try our best to improve the uclibc-ng continuously. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'libc/sysdeps/linux/csky/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/csky/bits/syscalls.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/csky/bits/syscalls.h b/libc/sysdeps/linux/csky/bits/syscalls.h
new file mode 100644
index 000000000..04d01f4ca
--- /dev/null
+++ b/libc/sysdeps/linux/csky/bits/syscalls.h
@@ -0,0 +1,113 @@
+#ifndef _BITS_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
+#endif
+
+#undef __NR_iopl
+#undef __NR_vm86
+
+/*
+ Some of the sneaky macros in the code were taken from
+ glibc-2.3.2/sysdeps/unix/sysv/linux/arm/sysdep.h
+*/
+
+//#include <errno.h>
+
+#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; \
+ }) \
+)
+
+#undef INTERNAL_SYSCALL_NCS
+#ifndef __cskyabiv2__
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({unsigned int __sys_result; \
+ { \
+ register int _a1 __asm__ ("a0"), _nr __asm__ ("r1"); \
+ LOAD_ARGS_##nr (args) \
+ _nr = (name); \
+ __asm__ __volatile__ ("trap 0 \n\t" \
+ : "=r" (_a1) \
+ : "r" (_nr) ASM_ARGS_##nr \
+ : "memory"); \
+ __sys_result = _a1; \
+ } \
+ (int) __sys_result; })
+
+#else /* __cskyabiv2__ */
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({unsigned int __sys_result; \
+ { \
+ register int _a1 __asm__ ("a0"), _nr __asm__ ("r7"); \
+ LOAD_ARGS_##nr (args) \
+ _nr = (name); \
+ __asm__ __volatile__ ("trap 0 \n\t" \
+ : "=r" (_a1) \
+ : "r" (_nr) ASM_ARGS_##nr \
+ : "memory"); \
+ __sys_result = _a1; \
+ } \
+ (int) __sys_result; })
+#endif /* __ABI_CSKY_V2__ */
+
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned int) (val) >= 0xfffff001u)
+
+#define LOAD_ARGS_0()
+#define ASM_ARGS_0
+#define LOAD_ARGS_1(a1) \
+ _a1 = (int) (a1); \
+ LOAD_ARGS_0 ()
+#define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1)
+#define LOAD_ARGS_2(a1, a2) \
+ register int _a2 __asm__ ("a1") = (int) (a2); \
+ LOAD_ARGS_1 (a1)
+#define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2)
+#define LOAD_ARGS_3(a1, a2, a3) \
+ register int _a3 __asm__ ("a2") = (int) (a3); \
+ LOAD_ARGS_2 (a1, a2)
+#define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3)
+#define LOAD_ARGS_4(a1, a2, a3, a4) \
+ register int _a4 __asm__ ("a3") = (int) (a4); \
+ LOAD_ARGS_3 (a1, a2, a3)
+#define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4)
+
+#ifndef __cskyabiv2__
+#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
+ register int _v1 __asm__ ("a4") = (int) (a5); \
+ LOAD_ARGS_4 (a1, a2, a3, a4)
+#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
+ register int _v2 __asm__ ("a5") = (int) (a6); \
+ LOAD_ARGS_5 (a1, a2, a3, a4, a5)
+#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2)
+#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \
+ register int _v3 __asm__ ("r8") = (int) (a7); \
+ LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
+#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3)
+#else /* __cskyabiv2__ */
+#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
+ register int _v1 __asm__ ("l0") = (int) (a5); \
+ LOAD_ARGS_4 (a1, a2, a3, a4)
+#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
+ register int _v2 __asm__ ("l1") = (int) (a6); \
+ LOAD_ARGS_5 (a1, a2, a3, a4, a5)
+#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2)
+#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \
+ register int _v3 __asm__ ("l2") = (int) (a7); \
+ LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
+#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3)
+#endif /* __ABI_CSKY_V2__ */
+
+
+#endif /* _BITS_SYSCALLS_H */