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-rw-r--r--libc/sysdeps/linux/mips/bits/syscalls.h219
1 files changed, 214 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/mips/bits/syscalls.h b/libc/sysdeps/linux/mips/bits/syscalls.h
index e1981445f..2be184527 100644
--- a/libc/sysdeps/linux/mips/bits/syscalls.h
+++ b/libc/sysdeps/linux/mips/bits/syscalls.h
@@ -4,11 +4,220 @@
# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
#endif
-#include <features.h>
+/* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel
+ * header files. It also defines the traditional `SYS_<name>' macros for older
+ * programs. */
+#include <bits/syscall.h>
-/* Do something very evil for now. Until we create our own syscall
- * macros, short circuit bits/syscall.h and use asm/unistd.h instead */
-#define _BITS_SYSCALL_H
-#include <asm/unistd.h>
+#ifndef __set_errno
+# define __set_errno(val) { (*__errno_location ()) = (val); return -1; }
+#endif
+#ifndef SYS_ify
+# define SYS_ify(syscall_name) (__NR_##syscall_name)
+#endif
+
+#ifndef __ASSEMBLER__
+
+/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+long __res, __err; \
+__asm__ volatile ("li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name) \
+ : "$2","$7","$8","$9","$10","$11","$12","$13","$14","$15", \
+ "$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+/*
+ * DANGER: This macro isn't usable for the pipe(2) call
+ * which has a unusual return convention.
+ */
+#define _syscall1(type,name,atype,a) \
+type name(atype a) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)) \
+ : "$2","$4","$7","$8","$9","$10","$11","$12","$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall2(type,name,atype,a,btype,b) \
+type name(atype a,btype b) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)) \
+ : "$2","$4","$5","$7","$8","$9","$10","$11","$12","$13", \
+ "$14","$15", "$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall3(type,name,atype,a,btype,b,ctype,c) \
+type name (atype a, btype b, ctype c) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "move\t$6,%5\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)), \
+ "r" ((long)(c)) \
+ : "$2","$4","$5","$6","$7","$8","$9","$10","$11","$12", \
+ "$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall4(type,name,atype,a,btype,b,ctype,c,dtype,d) \
+type name (atype a, btype b, ctype c, dtype d) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "move\t$6,%5\n\t" \
+ "move\t$7,%6\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)), \
+ "r" ((long)(c)), \
+ "r" ((long)(d)) \
+ : "$2","$4","$5","$6","$7","$8","$9","$10","$11","$12", \
+ "$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall5(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e) \
+type name (atype a,btype b,ctype c,dtype d,etype e) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "move\t$6,%5\n\t" \
+ "lw\t$2,%7\n\t" \
+ "move\t$7,%6\n\t" \
+ "subu\t$29,24\n\t" \
+ "sw\t$2,16($29)\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7\n\t" \
+ "addiu\t$29,24" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)), \
+ "r" ((long)(c)), \
+ "r" ((long)(d)), \
+ "m" ((long)(e)) \
+ : "$2","$4","$5","$6","$7","$8","$9","$10","$11","$12", \
+ "$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \
+type name (atype a,btype b,ctype c,dtype d,etype e,ftype f) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "move\t$6,%5\n\t" \
+ "lw\t$2,%7\n\t" \
+ "lw\t$3,%8\n\t" \
+ "move\t$7,%6\n\t" \
+ "subu\t$29,24\n\t" \
+ "sw\t$2,16($29)\n\t" \
+ "sw\t$3,20($29)\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7\n\t" \
+ "addiu\t$29,24" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)), \
+ "r" ((long)(c)), \
+ "r" ((long)(d)), \
+ "m" ((long)(e)), \
+ "m" ((long)(f)) \
+ : "$2","$3","$4","$5","$6","$7","$8","$9","$10","$11", \
+ "$12","$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+
+#define _syscall7(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f,gtype,g) \
+type name (atype a,btype b,ctype c,dtype d,etype e,ftype f,gtype g) \
+{ \
+long __res, __err; \
+__asm__ volatile ("move\t$4,%3\n\t" \
+ "move\t$5,%4\n\t" \
+ "move\t$6,%5\n\t" \
+ "lw\t$2,%7\n\t" \
+ "lw\t$3,%8\n\t" \
+ "move\t$7,%6\n\t" \
+ "subu\t$29,32\n\t" \
+ "sw\t$2,16($29)\n\t" \
+ "lw\t$2,%9\n\t" \
+ "sw\t$3,20($29)\n\t" \
+ "sw\t$2,24($29)\n\t" \
+ "li\t$2,%2\n\t" \
+ "syscall\n\t" \
+ "move\t%0, $2\n\t" \
+ "move\t%1, $7\n\t" \
+ "addiu\t$29,32" \
+ : "=r" (__res), "=r" (__err) \
+ : "i" (__NR_##name),"r" ((long)(a)), \
+ "r" ((long)(b)), \
+ "r" ((long)(c)), \
+ "r" ((long)(d)), \
+ "m" ((long)(e)), \
+ "m" ((long)(f)), \
+ "m" ((long)(g)) \
+ : "$2","$3","$4","$5","$6","$7","$8","$9","$10","$11", \
+ "$12","$13","$14","$15","$24"); \
+if (__err == 0) \
+ return (type) __res; \
+__set_errno(__res); \
+}
+#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
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