mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-21 11:27:43 +02:00
3f494f8d22
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4672 3c298f89-4303-0410-b956-a3cf2f4a3e73
224 lines
8.2 KiB
Diff
224 lines
8.2 KiB
Diff
diff -Nur uClibc-0.9.28/libc/sysdeps/linux/powerpc/bits/syscalls.h uClibc-0.9.28-owrt/libc/sysdeps/linux/powerpc/bits/syscalls.h
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--- uClibc-0.9.28/libc/sysdeps/linux/powerpc/bits/syscalls.h 2005-08-18 00:49:41.000000000 +0200
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+++ uClibc-0.9.28-owrt/libc/sysdeps/linux/powerpc/bits/syscalls.h 2006-08-25 17:58:21.000000000 +0200
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@@ -5,67 +5,164 @@
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# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
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#endif
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+#include <errno.h>
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+
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/* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel
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* header files. It also defines the traditional `SYS_<name>' macros for older
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* programs. */
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#include <bits/sysnum.h>
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-
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-#define __STRINGIFY(s) __STRINGIFY2 (s)
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-#define __STRINGIFY2(s) #s
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-
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-#undef JUMPTARGET
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-#ifdef __PIC__
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-#define __MAKE_SYSCALL __STRINGIFY(__uClibc_syscall@plt)
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+/* Define a macro which expands inline into the wrapper code for a system
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+ call. This use is for internal calls that do not need to handle errors
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+ normally. It will never touch errno.
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+ On powerpc a system call basically clobbers the same registers like a
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+ function call, with the exception of LR (which is needed for the
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+ "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
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+ an error return status). */
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+
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+# undef INLINE_SYSCALL
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+#if 1
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+# define INLINE_SYSCALL(name, nr, args...) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (sc_err); \
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+ long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
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+ if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
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+ { \
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+ __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
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+ sc_ret = -1L; \
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+ } \
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+ sc_ret; \
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+ })
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#else
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-#define __MAKE_SYSCALL __STRINGIFY(__uClibc_syscall)
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+# define INLINE_SYSCALL(name, nr, args...) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (sc_err); \
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+ long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
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+ if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
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+ { \
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+ sc_ret = __syscall_error(INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err));\
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+ } \
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+ sc_ret; \
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+ })
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#endif
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-#define unified_syscall_body(name) \
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- __asm__ ( \
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- ".section \".text\"\n\t" \
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- ".align 2\n\t" \
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- ".globl " __STRINGIFY(name) "\n\t" \
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- ".type " __STRINGIFY(name) ",@function\n\t" \
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- #name":\tli 0," __STRINGIFY(__NR_##name) "\n\t" \
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- "b " __MAKE_SYSCALL "\n\t" \
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- ".size\t" __STRINGIFY(name) ",.""-" __STRINGIFY(name) "\n" \
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- )
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+/* Define a macro which expands inline into the wrapper code for a system
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+ call. This use is for internal calls that do not need to handle errors
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+ normally. It will never touch errno.
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+ On powerpc a system call basically clobbers the same registers like a
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+ function call, with the exception of LR (which is needed for the
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+ "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
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+ an error return status). */
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+
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+# undef INTERNAL_SYSCALL_DECL
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+# define INTERNAL_SYSCALL_DECL(err) long int err
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+
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+# undef INTERNAL_SYSCALL
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+# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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+ ({ \
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+ register long int r0 __asm__ ("r0"); \
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+ register long int r3 __asm__ ("r3"); \
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+ register long int r4 __asm__ ("r4"); \
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+ register long int r5 __asm__ ("r5"); \
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+ register long int r6 __asm__ ("r6"); \
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+ register long int r7 __asm__ ("r7"); \
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+ register long int r8 __asm__ ("r8"); \
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+ register long int r9 __asm__ ("r9"); \
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+ register long int r10 __asm__ ("r10"); \
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+ register long int r11 __asm__ ("r11"); \
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+ register long int r12 __asm__ ("r12"); \
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+ LOADARGS_##nr(name, args); \
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+ __asm__ __volatile__ \
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+ ("sc \n\t" \
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+ "mfcr %0" \
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+ : "=&r" (r0), \
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+ "=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
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+ "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
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+ : ASM_INPUT_##nr \
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+ : "cr0", "ctr", "memory"); \
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+ err = r0; \
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+ (int) r3; \
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+ })
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+# define INTERNAL_SYSCALL(name, err, nr, args...) \
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+ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
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+
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+# undef INTERNAL_SYSCALL_ERROR_P
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+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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+ ((void) (val), __builtin_expect ((err) & (1 << 28), 0))
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+
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+# undef INTERNAL_SYSCALL_ERRNO
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+# define INTERNAL_SYSCALL_ERRNO(val, err) (val)
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+
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+# define LOADARGS_0(name, dummy) \
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+ r0 = (long int)name
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+# define LOADARGS_1(name, __arg1) \
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+ LOADARGS_0(name, 0); \
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+ r3 = (long int)__arg1
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+# define LOADARGS_2(name, __arg1, __arg2) \
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+ LOADARGS_1(name, __arg1); \
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+ r4 = (long int)__arg2
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+# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
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+ LOADARGS_2(name, __arg1, __arg2); \
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+ r5 = (long int)__arg3
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+# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \
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+ LOADARGS_3(name, __arg1, __arg2, __arg3); \
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+ r6 = (long int)__arg4
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+# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \
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+ LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \
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+ r7 = (long int)__arg5
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+# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \
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+ LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \
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+ r8 = (long int)__arg6
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+
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+# define ASM_INPUT_0 "0" (r0)
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+# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
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+# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
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+# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
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+# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
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+# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
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+# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)
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#undef _syscall0
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-#define _syscall0(type,name) \
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-type name(void); \
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-unified_syscall_body(name)
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+#define _syscall0(type,name) \
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+type name(void){ \
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+ return (type) INLINE_SYSCALL(name, 0); \
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+}
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#undef _syscall1
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#define _syscall1(type,name,type1,arg1) \
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-type name(type1 arg1); \
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-unified_syscall_body(name)
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+type name(type1 arg1){ \
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+ return (type) INLINE_SYSCALL(name, 1, arg1); \
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+}
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#undef _syscall2
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#define _syscall2(type,name,type1,arg1,type2,arg2) \
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-type name(type1 arg1, type2 arg2); \
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-unified_syscall_body(name)
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+type name(type1 arg1, type2 arg2){ \
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+ return (type) INLINE_SYSCALL(name, 2, arg1, arg2); \
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+}
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#undef _syscall3
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#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
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-type name(type1 arg1, type2 arg2, type3 arg3); \
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-unified_syscall_body(name)
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+type name(type1 arg1, type2 arg2, type3 arg3){ \
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+ return (type) INLINE_SYSCALL(name, 3, arg1, arg2, arg3); \
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+}
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#undef _syscall4
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#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
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-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4); \
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-unified_syscall_body(name)
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+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4){ \
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+ return (type) INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4); \
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+}
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#undef _syscall5
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#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
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-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5); \
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-unified_syscall_body(name)
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+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5){ \
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+ return (type) INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5); \
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+}
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#undef _syscall6
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#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5,type6,arg6) \
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-type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6); \
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-unified_syscall_body(name)
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+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6){ \
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+ return (type) INLINE_SYSCALL(name, 6, arg1, arg2, arg3, arg4, arg5, arg6); \
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+}
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#endif /* _BITS_SYSCALLS_H */
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diff -urP uClibc-0.9.28/libc/sysdeps/linux/powerpc/sys/procfs.h uClibc-0.9.28-uint128/libc/sysdeps/linux/powerpc/sys/procfs.h
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--- uClibc-0.9.28/libc/sysdeps/linux/powerpc/sys/procfs.h 2005-08-18 00:49:41.000000000 +0200
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+++ uClibc-0.9.28-uint128/libc/sysdeps/linux/powerpc/sys/procfs.h 2005-08-22 17:27:17.000000000 +0200
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@@ -42,15 +42,10 @@
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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-/* gcc 3.1 and newer support __uint128_t. */
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-#if !__GNUC_PREREQ(3,1)
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-typedef struct {
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- unsigned long u[4];
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-} __attribute((aligned(16))) __uint128_t;
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-#endif
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-
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/* Altivec registers */
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-typedef __uint128_t elf_vrreg_t;
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+typedef struct {
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+ unsigned int u[4];
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+} __attribute((aligned (16))) elf_vrreg_t;
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typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG];
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struct elf_siginfo
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