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Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h')
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h177
1 files changed, 117 insertions, 60 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
index c808a97fc5..29c5158b9f 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Miguel de Icaza <miguel@gnu.ai.mit.edu>, January 1997.
@@ -38,54 +38,131 @@
#undef PSEUDO
#undef PSEUDO_NOERRNO
#undef PSEUDO_ERRVAL
-#undef PSEUDO_END
#undef ENTRY
#undef END
#undef LOC
-#define ENTRY(name) \
- .align 4; \
- .global C_SYMBOL_NAME(name); \
- .type name, @function; \
-C_LABEL(name) \
- cfi_startproc;
+#define ENTRY(name) \
+ .global C_SYMBOL_NAME(name); \
+ .align 4;\
+ C_LABEL(name);\
+ .type name,@function;
-#define END(name) \
- cfi_endproc; \
+#define END(name) \
.size name, . - name
#define LOC(name) .L##name
- /* If the offset to __syscall_error fits into a signed 22-bit
- * immediate branch offset, the linker will relax the call into
- * a normal branch.
- */
-#define PSEUDO(name, syscall_name, args) \
- .text; \
- .globl __syscall_error; \
-ENTRY(name); \
- LOADSYSCALL(syscall_name); \
- ta 0x10; \
- bcc 1f; \
- mov %o7, %g1; \
- call __syscall_error; \
- mov %g1, %o7; \
-1:
-
-#define PSEUDO_NOERRNO(name, syscall_name, args)\
- .text; \
-ENTRY(name); \
- LOADSYSCALL(syscall_name); \
- ta 0x10;
-
-#define PSEUDO_ERRVAL(name, syscall_name, args) \
- .text; \
-ENTRY(name); \
- LOADSYSCALL(syscall_name); \
- ta 0x10;
-
-#define PSEUDO_END(name) \
- END(name)
+#ifdef LINKER_HANDLES_R_SPARC_WDISP22
+/* Unfortunately, we cannot do this yet. Linker doesn't seem to
+ handle R_SPARC_WDISP22 against non-STB_LOCAL symbols properly . */
+# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \
+ .section .gnu.linkonce.t.handler,"ax",@progbits; \
+ .globl handler; \
+ .hidden handler; \
+ .type handler,@function; \
+handler:
+#else
+# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \
+ .subsection 3; \
+handler:
+#endif
+
+#if RTLD_PRIVATE_ERRNO
+# define SYSCALL_ERROR_HANDLER \
+ .section .gnu.linkonce.t.__sparc_get_pic_l7,"ax",@progbits; \
+ .globl __sparc_get_pic_l7; \
+ .hidden __sparc_get_pic_l7; \
+ .type __sparc_get_pic_l7,@function; \
+__sparc_get_pic_l7: \
+ retl; \
+ add %o7, %l7, %l7; \
+ .previous; \
+SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
+ save %sp,-96,%sp; \
+ sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \
+ call __sparc_get_pic_l7; \
+ add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \
+ ld [%l7 + rtld_errno], %l0; \
+ st %i0, [%l0]; \
+ jmpl %i7+8, %g0; \
+ restore %g0, -1, %o0; \
+ .previous;
+#elif USE___THREAD
+# ifndef NOT_IN_libc
+# define SYSCALL_ERROR_ERRNO __libc_errno
+# else
+# define SYSCALL_ERROR_ERRNO errno
+# endif
+# ifdef SHARED
+# define SYSCALL_ERROR_HANDLER \
+ .section .gnu.linkonce.t.__sparc_get_pic_l7,"ax",@progbits; \
+ .globl __sparc_get_pic_l7; \
+ .hidden __sparc_get_pic_l7; \
+ .type __sparc_get_pic_l7,@function; \
+__sparc_get_pic_l7: \
+ retl; \
+ add %o7, %l7, %l7; \
+ .previous; \
+SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
+ save %sp,-96,%sp; \
+ sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %l1; \
+ sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \
+ call __sparc_get_pic_l7; \
+ add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \
+ add %l1, %tie_lo10(SYSCALL_ERROR_ERRNO), %l1; \
+ ld [%l7 + %l1], %l1, %tie_ld(SYSCALL_ERROR_ERRNO); \
+ st %i0, [%g7 + %l1], %tie_add(SYSCALL_ERROR_ERRNO); \
+ jmpl %i7+8, %g0; \
+ restore %g0, -1, %o0; \
+ .previous;
+# else
+# define SYSCALL_ERROR_HANDLER \
+SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
+ sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
+ sethi %hi(_GLOBAL_OFFSET_TABLE_), %g2; \
+ add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
+ add %g2, %lo(_GLOBAL_OFFSET_TABLE_), %g2; \
+ ld [%g2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO); \
+ st %o0, [%g7 + %g1], %tie_add(SYSCALL_ERROR_ERRNO); \
+ jmpl %o7+8, %g0; \
+ mov -1, %o0; \
+ .previous;
+# endif
+#else
+# define SYSCALL_ERROR_HANDLER \
+SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
+ .global __errno_location; \
+ .type __errno_location,@function; \
+ save %sp, -96, %sp; \
+ call __errno_location; \
+ nop; \
+ st %i0, [%o0]; \
+ jmpl %i7+8, %g0; \
+ restore %g0, -1, %o0; \
+ .previous;
+#endif
+
+#define PSEUDO(name, syscall_name, args) \
+ .text; \
+ ENTRY(name); \
+ LOADSYSCALL(syscall_name); \
+ ta 0x10; \
+ bcs __syscall_error_handler; \
+ nop; \
+ SYSCALL_ERROR_HANDLER
+
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ .text; \
+ ENTRY(name); \
+ LOADSYSCALL(syscall_name); \
+ ta 0x10
+
+#define PSEUDO_ERRVAL(name, syscall_name, args) \
+ .text; \
+ ENTRY(name); \
+ LOADSYSCALL(syscall_name); \
+ ta 0x10
#else /* __ASSEMBLER__ */
@@ -137,24 +214,4 @@ ENTRY(name); \
#endif /* __ASSEMBLER__ */
-/* Pointer mangling support. */
-#if defined NOT_IN_libc && defined IS_IN_rtld
-/* We cannot use the thread descriptor because in ld.so we use setjmp
- earlier than the descriptor is initialized. */
-#else
-# ifdef __ASSEMBLER__
-# define PTR_MANGLE(dreg, reg, tmpreg) \
- ld [%g7 + POINTER_GUARD], tmpreg; \
- xor reg, tmpreg, dreg
-# define PTR_DEMANGLE(dreg, reg, tmpreg) PTR_MANGLE (dreg, reg, tmpreg)
-# define PTR_MANGLE2(dreg, reg, tmpreg) \
- xor reg, tmpreg, dreg
-# define PTR_DEMANGLE2(dreg, reg, tmpreg) PTR_MANGLE2 (dreg, reg, tmpreg)
-# else
-# define PTR_MANGLE(var) \
- (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
-# define PTR_DEMANGLE(var) PTR_MANGLE (var)
-# endif
-#endif
-
#endif /* linux/sparc/sysdep.h */
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