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authorRichard Henderson <rth@redhat.com>1998-01-26 22:04:53 +0000
committerRichard Henderson <rth@redhat.com>1998-01-26 22:04:53 +0000
commit0b833ff44bd66007da7f86aa98cc87519d31e1e3 (patch)
treef10a4e7f26b41e0d60738aea64df433bf9708451 /sysdeps
parent2498cdcc850fc379d01edc6310270bbd7287d758 (diff)
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* sysdeps/alpha/dl-machine.h (TRAMPOLINE_TEMPLATE): Move declaration 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.
1998-01-26 Richard Henderson <rth@cygnus.com> * sysdeps/alpha/dl-machine.h (TRAMPOLINE_TEMPLATE): Move declaration 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.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/alpha/dl-machine.h6
-rw-r--r--sysdeps/unix/sysv/linux/alpha/clone.S6
-rw-r--r--sysdeps/unix/sysv/linux/alpha/rt_sigaction.S75
-rw-r--r--sysdeps/unix/sysv/linux/alpha/sys/ucontext.h41
-rw-r--r--sysdeps/unix/sysv/linux/alpha/syscalls.list1
5 files changed, 123 insertions, 6 deletions
diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h
index e42ed3d..455fd7b 100644
--- a/sysdeps/alpha/dl-machine.h
+++ b/sysdeps/alpha/dl-machine.h
@@ -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
diff --git a/sysdeps/unix/sysv/linux/alpha/clone.S b/sysdeps/unix/sysv/linux/alpha/clone.S
index 3f097fe..930e379 100644
--- a/sysdeps/unix/sysv/linux/alpha/clone.S
+++ b/sysdeps/unix/sysv/linux/alpha/clone.S
@@ -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
diff --git a/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S b/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
new file mode 100644
index 0000000..bcb2be0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
@@ -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
diff --git a/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h b/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
new file mode 100644
index 0000000..349dd1e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
@@ -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 */
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index 9b67618..17c55f0 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -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