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Update.

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2003-01-05  Kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* sysdeps/unix/sysv/linux/sh/clone.S (__clone): Use
	SYSCALL_ERROR_HANDLER.
	* sysdeps/unix/sysv/linux/sh/pipe.S (__libc_pipe): Likewise.
	* sysdeps/unix/sysv/linux/sh/socket.S (__socket): Likewise.
	Add support for cancellation handling.
	* sysdeps/unix/sysv/linux/sh/syscall.S (__syscall): Use
	SYSCALL_ERROR_HANDLER.
	* sysdeps/unix/sysv/linux/sh/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep.h (PSEUDO): Likewise.
	Add support for cancellation handling.
	(SYSCALL_ERROR_HANDLER): Define PIC variants.
This commit is contained in:
Ulrich Drepper
2003-01-05 11:26:28 +00:00
parent bdee30cfe4
commit bbd1745596
10 changed files with 223 additions and 225 deletions
Download Patch File Download Diff File Expand all files Collapse all files

131
sysdeps/unix/sysv/linux/sh/sysdep.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1992,93,95-99,2000,02 Free Software Foundation, Inc.
/* Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.
@ -45,9 +45,9 @@
returns a value in -1 .. -4095 as a valid result so we can savely
test with -4095. */
#define _IMM1 #-1
#define _IMM12 #-12
#undef PSEUDO
#ifdef SHARED
#define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name); \
@ -57,50 +57,99 @@
shad r2,r1; \
not r1,r1; \
tst r1,r1; \
bf 1f; \
mov r0,r4; \
mov.l r12,@-r15; \
sts.l pr,@-r15; \
mov.l 0f,r12; \
mova 0f,r0; \
add r0,r12; \
mov.l 2f,r1; \
mova 2f,r0; \
add r0,r1; \
jsr @r1; \
nop; \
lds.l @r15+,pr; \
rts; \
mov.l @r15+,r12; \
.align 2; \
2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \
0: .long _GLOBAL_OFFSET_TABLE_; \
1:
#else
#define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name); \
DO_CALL (syscall_name, args); \
mov r0,r1; \
mov _IMM12,r2; \
shad r2,r1; \
not r1,r1; \
tst r1,r1; \
bf 1f; \
mov.l 2f,r1; \
jmp @r1; \
mov r0, r4; \
.align 2; \
2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \
1:
#endif
bf .Lpseudo_end; \
SYSCALL_ERROR_HANDLER; \
.Lpseudo_end:
#undef PSEUDO_END
#define PSEUDO_END(name) \
SYSCALL_ERROR_HANDLER \
END (name)
#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
#ifndef PIC
# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
#else
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
neg r0,r1; \
mov.l 0f,r12; \
mova 0f,r0; \
add r0,r12; \
mov.l 1f,r0; \
mov.l r1,@(r0,r12)
bra .Lpseudo_end; \
mov _IMM1,r0; \
.align 2; \
0: .long _GLOBAL_OFFSET_TABLE_; \
1: .long errno@GOTOFF
# elif defined _LIBC_REENTRANT
# if USE___THREAD
# ifndef NOT_IN_libc
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
# define SYSCALL_ERROR_HANDLER \
neg r0,r1; \
mov r12,r2; \
mov.l 0f,r12; \
mova 0f,r0; \
add r0,r12; \
mov.l 1f,r0; \
stc gbr, r4; \
mov.l @(r0,r12),r0; \
mov r2,r12; \
add r4,r0; \
mov.l r1,@r0; \
bra .Lpseudo_end; \
mov _IMM1,r0; \
.align 2; \
0: .long _GLOBAL_OFFSET_TABLE_; \
1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF
# else
# define SYSCALL_ERROR_HANDLER \
neg r0,r1; \
mov.l r12,@-r15; \
mov.l r1,@-r15; \
mov.l 0f,r12; \
mova 0f,r0; \
add r0,r12; \
sts.l pr,@-r15; \
mov.l 1f,r1; \
bsrf r1; \
nop; \
2: lds.l @r15+,pr; \
mov.l @r15+,r1; \
mov.l r1,@r0; \
mov.l @r15+,r12; \
bra .Lpseudo_end; \
mov _IMM1,r0; \
.align 2; \
0: .long _GLOBAL_OFFSET_TABLE_; \
1: .long PLTJMP(C_SYMBOL_NAME(__errno_location))-(2b+2-.)
/* A quick note: it is assumed that the call to `__errno_location' does
not modify the stack! */
# endif
# else
/* Store (-r0) into errno through the GOT. */
# define SYSCALL_ERROR_HANDLER \
neg r0,r1; \
mov r12,r2; \
mov.l 0f,r12; \
mova 0f,r0; \
add r0,r12; \
mov.l 1f,r0; \
mov.l @(r0,r12),r0; \
mov r2,r12; \
mov.l r1,@r0; \
bra .Lpseudo_end; \
mov _IMM1,r0; \
.align 2; \
0: .long _GLOBAL_OFFSET_TABLE_; \
1: .long errno@GOT
# endif /* _LIBC_REENTRANT */
#endif /* PIC */
#define SYSCALL_INST0 trapa #0x10
#define SYSCALL_INST1 trapa #0x11