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* sysdeps/alpha/dl-machine.h (TRAMPOLINE_TEMPLATE): Move declaration

Browse Source 
of the trampoline function into the macro.
* sysdeps/unix/sysv/linux/alpha/clone.S: Fix ldgp for PROF.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Revert last change;
kernel 2.1.82 has this fixed.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: New file.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: New file.
This commit is contained in:
Richard Henderson 1998-01-26 22:04:53 +00:00
parent 3b56dfe148
commit 18a702a8a3
5 changed files with 123 additions and 6 deletions
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6
sysdeps/alpha/dl-machine.h
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@ -123,7 +123,9 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name, IMB) asm ( "\
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name, IMB) \
extern void tramp_name (void); \
asm ( "\
.globl " #tramp_name "
.ent " #tramp_name "
" #tramp_name ":
@ -205,8 +207,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup, imb); \
extern void _dl_runtime_resolve (void); \
extern void _dl_runtime_profile (void); \
strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
#endif

6
sysdeps/unix/sysv/linux/alpha/clone.S
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@ -28,14 +28,16 @@
.text
ENTRY(__clone)
.frame sp,0,ra,0
#ifdef PROF
ldgp gp,0(pv)
.set noat
lda AT, _mcount
jsr AT, (AT), _mcount
.set at
#endif
.prologue 1
#else
.prologue 0
#endif
/* Sanity check arguments. */
ldiq v0,EINVAL

75
sysdeps/unix/sysv/linux/alpha/rt_sigaction.S Normal file
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@ -0,0 +1,75 @@
/* Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@cygnus.com>, 1998
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
/* On Alpha we desparately want to avoid having to issue an imb. Ordinarily
the kernel would have to issue one after setting up the signal return
stack, but the Linux rt_sigaction syscall is prepared to accept a pointer
to the sigreturn syscall, instead of inlining it on the stack.
This just about halves signal delivery time. */
.text
ENTRY(__syscall_rt_sigaction)
.frame sp,0,ra,0
#ifdef PROF
ldgp gp,0(pv)
.set noat
lda AT, _mcount
jsr AT, (AT), _mcount
.set at
#endif
.prologue 1
beq a1, 0f
ldl t0, 8(a1)
lda a4, sigreturn-__syscall_rt_sigaction(pv)
lda t1, rt_sigreturn-__syscall_rt_sigaction(pv)
and t0, 0x00000040, t0 # SA_SIGINFO
cmovne t0, t1, a4
0: ldi v0,__NR_sigaction
callsys
bne a3,1f
ret
1: br gp,2f
2: ldgp gp,0(gp)
jmp __syscall_error
END(__syscall_rt_sigaction)
.align 5
.ent sigreturn
sigreturn:
.prologue 0
mov sp,a0
ldi v0,__NR_sigreturn
callsys
.end sigreturn
.align 4
.ent rt_sigreturn
rt_sigreturn:
.prologue 0
mov sp,a0
ldi v0,__NR_rt_sigreturn
callsys
.end rt_sigreturn

41
sysdeps/unix/sysv/linux/alpha/sys/ucontext.h Normal file
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@ -0,0 +1,41 @@
/* Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <signal.h>
#include <bits/sigcontext.h>
/* A machine context is exactly a sigcontext. */
typedef struct sigcontext mcontext_t;
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_links;
unsigned long __uc_osf_sigmask;
stack_t uc_stack;
mcontext_t uc_mcontext;
__sigset_t uc_sigmask;
} ucontext_t;
#endif /* sys/ucontext.h */

1
sysdeps/unix/sysv/linux/alpha/syscalls.list
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@ -16,7 +16,6 @@ semget - semget 3 __semget semget
semctl - semctl 4 __semctl semctl
osf_sigprocmask - osf_sigprocmask 2 __osf_sigprocmask
s_sigaction sigaction osf_sigaction 3 __syscall_sigaction
getpeername - getpeername 3 __getpeername getpeername
getpriority - getpriority 2 __getpriority getpriority