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authorVincent Ren-Wei Chen <vincentc@andestech.com>2017-01-17 07:31:24 +0100
committerWaldemar Brodkorb <wbx@openadk.org>2017-01-22 10:06:29 +0100
commit6af3332a4cbd1ffbc81f74759ef7c5e1a87d2e10 (patch)
tree4deae5f23fd1e2664f21c09dfb57fda799dffd10 /libc/sysdeps/linux/nds32/bits/syscalls.h
parent82af21a60bc6e53dd92c1c140f20179d2ae4ad40 (diff)
nds32: add NPTL/TLS, *context function, libm changes and code cleanup
This commit includes following features. 1. Support NPTL/TLS 2. Add libm function which is used to handle FP rounding and excpetions (ex: fclrexcpt,fedisblxcpti,feenablxcpt... ) 3. Add *context function for operating user context (ex: setcontext,getcontext,makecontext... ) 4. Change the return flow from signal handler 5. Cleanup of old code The testsuite only has 2 errors, tst-cpuclock1 and tst-cputimer1, which are related to timing accuracy. (math and locale tests are disabled) Signed-off-by: Vincent Ren-Wei Chen <vincentc@andestech.com>
Diffstat (limited to 'libc/sysdeps/linux/nds32/bits/syscalls.h')
-rw-r--r--libc/sysdeps/linux/nds32/bits/syscalls.h354
1 files changed, 277 insertions, 77 deletions
diff --git a/libc/sysdeps/linux/nds32/bits/syscalls.h b/libc/sysdeps/linux/nds32/bits/syscalls.h
index f69ad4c41..215ce3467 100644
--- a/libc/sysdeps/linux/nds32/bits/syscalls.h
+++ b/libc/sysdeps/linux/nds32/bits/syscalls.h
@@ -3,6 +3,26 @@
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
+/*
+ * For nds32 ISA, the syscall number(SWID) shall be determined at compile time.
+ * (ex: asm("syscall SWID"); )
+ * If the value of syscall number is determined at run time, we shall issue
+ * this syscall through sys_syscall.
+ * (ex:
+ * asm("move $r0, SYSCALL_number"
+ * "syscall 0x5071");
+ * where 0x5071 is syscall number for sys_syscall
+ * )
+ *
+ * The following two macros are implemented according that syscall number
+ * is determined in compiler time or run time,
+ *
+ * 1. INTERNAL_SYSCALL_NCS: the syscall number is determined at run time
+ * 2. INTERNAL_SYSCALL: the syscall number is determined at compile time
+ *
+ */
+
+
#ifndef _BITS_SYSCALLS_H
#define _BITS_SYSCALLS_H
#ifndef _SYSCALL_H
@@ -11,6 +31,14 @@
#ifndef __ASSEMBLER__
#include <errno.h>
+#include <common/sysdep.h>
+
+#define X(x) #x
+#define Y(x) X(x)
+#define LIB_SYSCALL __NR_syscall
+
+#define __issue_syscall(syscall_name) \
+" syscall " Y(syscall_name) "; \n"
#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) ((unsigned int) (val) >= 0xfffff001u)
@@ -18,86 +46,258 @@
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
-#define X(x) #x
-#define Y(x) X(x)
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (err); \
+ long result_var = INTERNAL_SYSCALL (name, err, nr, args); \
+ if (INTERNAL_SYSCALL_ERROR_P (result_var, err)) \
+ { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
+ result_var = -1 ; \
+ } \
+ result_var; \
+ })
+
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
-#define __issue_syscall(syscall_name) \
-" syscall " Y(syscall_name) "; \n"
-
-#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
-(__extension__ \
-({ \
- register long __result __asm__("$r0"); \
- register long _sys_num __asm__("$r8"); \
- \
- LOAD_ARGS_##nr (name, args) \
- _sys_num = (name); \
- \
- __asm__ volatile ( \
- __issue_syscall (name) \
- : "=r" (__result) \
- : "r"(_sys_num) ASM_ARGS_##nr \
- : "$lp", "memory"); \
- __result; \
-}) \
-)
-
-/* Macros for setting up inline __asm__ input regs */
-#define ASM_ARGS_0
-#define ASM_ARGS_1 ASM_ARGS_0, "r" (__result)
-#define ASM_ARGS_2 ASM_ARGS_1, "r" (_arg2)
-#define ASM_ARGS_3 ASM_ARGS_2, "r" (_arg3)
-#define ASM_ARGS_4 ASM_ARGS_3, "r" (_arg4)
-#define ASM_ARGS_5 ASM_ARGS_4, "r" (_arg5)
-#define ASM_ARGS_6 ASM_ARGS_5, "r" (_arg6)
-#define ASM_ARGS_7 ASM_ARGS_6, "r" (_arg7)
-
-/* Macros for converting sys-call wrapper args into sys call args */
-#define LOAD_ARGS_0(name, arg) \
- _sys_num = (long) (name); \
-
-#define LOAD_ARGS_1(name, arg1) \
- __result = (long) (arg1); \
- LOAD_ARGS_0 (name, arg1)
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...) internal_syscall##nr(__NR_##name, err, args)
/*
- * Note that the use of _tmpX might look superflous, however it is needed
- * to ensure that register variables are not clobbered if arg happens to be
- * a function call itself. e.g. sched_setaffinity() calling getpid() for arg2
- *
- * Also this specific order of recursive calling is important to segregate
- * the tmp args evaluation (function call case described above) and assigment
- * of register variables
- */
-#define LOAD_ARGS_2(name, arg1, arg2) \
- long _tmp2 = (long) (arg2); \
- LOAD_ARGS_1 (name, arg1) \
- register long _arg2 __asm__ ("$r1") = _tmp2;
-
-#define LOAD_ARGS_3(name, arg1, arg2, arg3) \
- long _tmp3 = (long) (arg3); \
- LOAD_ARGS_2 (name, arg1, arg2) \
- register long _arg3 __asm__ ("$r2") = _tmp3;
-
-#define LOAD_ARGS_4(name, arg1, arg2, arg3, arg4) \
- long _tmp4 = (long) (arg4); \
- LOAD_ARGS_3 (name, arg1, arg2, arg3) \
- register long _arg4 __asm__ ("$r3") = _tmp4;
-
-#define LOAD_ARGS_5(name, arg1, arg2, arg3, arg4, arg5) \
- long _tmp5 = (long) (arg5); \
- LOAD_ARGS_4 (name, arg1, arg2, arg3, arg4) \
- register long _arg5 __asm__ ("$r4") = _tmp5;
-
-#define LOAD_ARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \
- long _tmp6 = (long) (arg6); \
- LOAD_ARGS_5 (name, arg1, arg2, arg3, arg4, arg5) \
- register long _arg6 __asm__ ("$r5") = _tmp6;
-
-#define LOAD_ARGS_7(name, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
- long _tmp7 = (long) (arg7); \
- LOAD_ARGS_6 (name, arg1, arg2, arg3, arg4, arg5, arg6) \
- register long _arg7 __asm__ ("$r6") = _tmp7;
+ The _NCS variant allows non-constant syscall numbers but it is not
+ possible to use more than four parameters.
+*/
+#undef INTERNAL_SYSCALL_NCS
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) internal_syscall_ncs##nr(name, err, args)
+
+
+#define internal_syscall0(name, err, dummy...) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall1(name, err, arg1) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall2(name, err, arg1, arg2) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall3(name, err, arg1, arg2, arg3) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ register long __arg3 __asm__("$r2") = (long) (arg3); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall4(name, err, arg1, arg2, arg3, arg4) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ register long __arg3 __asm__("$r2") = (long) (arg3); \
+ register long __arg4 __asm__("$r3") = (long) (arg4); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__arg4) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall5(name, err, arg1, arg2, arg3, arg4, arg5) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ register long __arg3 __asm__("$r2") = (long) (arg3); \
+ register long __arg4 __asm__("$r3") = (long) (arg4); \
+ register long __arg5 __asm__("$r4") = (long) (arg5); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__arg4) /* input operands */ \
+ , "r" (__arg5) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall6(name, err, arg1, arg2, arg3, arg4, arg5, arg6) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ register long __arg3 __asm__("$r2") = (long) (arg3); \
+ register long __arg4 __asm__("$r3") = (long) (arg4); \
+ register long __arg5 __asm__("$r4") = (long) (arg5); \
+ register long __arg6 __asm__("$r5") = (long) (arg6); \
+ __asm__ volatile ( \
+ __issue_syscall (name) \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__arg4) /* input operands */ \
+ , "r" (__arg5) /* input operands */ \
+ , "r" (__arg6) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+#define internal_syscall7(name, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
+ ({ \
+ register long ___res __asm__("$r0"); \
+ register long __arg1 __asm__("$r0") = (long) (arg1); \
+ register long __arg2 __asm__("$r1") = (long) (arg2); \
+ register long __arg3 __asm__("$r2") = (long) (arg3); \
+ register long __arg4 __asm__("$r3") = (long) (arg4); \
+ register long __arg5 __asm__("$r4") = (long) (arg5); \
+ register long __arg6 __asm__("$r5") = (long) (arg6); \
+ __asm__ volatile ( \
+ "addi10.sp\t #-4\n\t" \
+ CFI_ADJUST_CFA_OFFSET(4)"\n\t" \
+ "push\t %7\n\t" \
+ CFI_ADJUST_CFA_OFFSET(4)"\n\t" \
+ __issue_syscall (name) \
+ "addi10.sp\t #4\n\t" \
+ CFI_ADJUST_CFA_OFFSET(-4)"\n\t" \
+ "pop\t %7\n\t" \
+ CFI_ADJUST_CFA_OFFSET(-4)"\n\t" \
+ : "=r" (___res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__arg4) /* input operands */ \
+ , "r" (__arg5) /* input operands */ \
+ , "r" (__arg6) /* input operands */ \
+ , "r" (arg7) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ ___res; \
+ })
+
+#define internal_syscall_ncs0(name, err, dummy...) \
+ ({ \
+ register long __res __asm__("$r0"); \
+ register long __no __asm__("$r0") = (long) (name); \
+ __asm__ volatile ( \
+ __issue_syscall (LIB_SYSCALL) \
+ : "=r" (__res) /* output operands */ \
+ : "r" (__no) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ __res; \
+ })
+
+#define internal_syscall_ncs1(name, err, arg1) \
+ ({ \
+ register long __res __asm__("$r0"); \
+ register long __no __asm__("$r0") = (long) (name); \
+ register long __arg1 __asm__("$r1") = (long) (arg1); \
+ __asm__ volatile ( \
+ __issue_syscall (LIB_SYSCALL) \
+ : "=r" (__res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__no) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ __res; \
+ })
+
+#define internal_syscall_ncs2(name, err, arg1, arg2) \
+ ({ \
+ register long __res __asm__("$r0"); \
+ register long __no __asm__("$r0") = (long) (name); \
+ register long __arg1 __asm__("$r1") = (long) (arg1); \
+ register long __arg2 __asm__("$r2") = (long) (arg2); \
+ __asm__ volatile ( \
+ __issue_syscall (LIB_SYSCALL) \
+ : "=r" (__res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__no) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ __res; \
+ })
+
+#define internal_syscall_ncs3(name, err, arg1, arg2, arg3) \
+ ({ \
+ register long __res __asm__("$r0"); \
+ register long __no __asm__("$r0") = (long) (name); \
+ register long __arg1 __asm__("$r1") = (long) (arg1); \
+ register long __arg2 __asm__("$r2") = (long) (arg2); \
+ register long __arg3 __asm__("$r3") = (long) (arg3); \
+ __asm__ volatile ( \
+ __issue_syscall (LIB_SYSCALL) \
+ : "=r" (__res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__no) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ __res; \
+ })
+
+#define internal_syscall_ncs4(name, err, arg1, arg2, arg3, arg4) \
+ ({ \
+ register long __res __asm__("$r0"); \
+ register long __no __asm__("$r0") = (long) (name); \
+ register long __arg1 __asm__("$r1") = (long) (arg1); \
+ register long __arg2 __asm__("$r2") = (long) (arg2); \
+ register long __arg3 __asm__("$r3") = (long) (arg3); \
+ register long __arg4 __asm__("$r4") = (long) (arg4); \
+ __asm__ volatile ( \
+ __issue_syscall (LIB_SYSCALL) \
+ : "=r" (__res) /* output operands */ \
+ : "r" (__arg1) /* input operands */ \
+ , "r" (__arg2) /* input operands */ \
+ , "r" (__arg3) /* input operands */ \
+ , "r" (__arg4) /* input operands */ \
+ , "r" (__no) /* input operands */ \
+ : __SYSCALL_CLOBBERS); /* list of clobbered registers */ \
+ __res; \
+ })
+#define __SYSCALL_CLOBBERS "$lp", "memory"
#endif /* ! __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */