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authorRoland McGrath <roland@gnu.org>1996-06-19 06:54:12 +0000
committerRoland McGrath <roland@gnu.org>1996-06-19 06:54:12 +0000
commita1470b6f839addde3f8ee2c29a237aca21e62565 (patch)
treee57a088836e66c6784c7e48cbe01d61621d37f34 /sysdeps/unix
parent6990326c21e6d767e3531a00782af1e091eab4fe (diff)
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Thu Jun 13 17:25:11 1996 David Mosberger-Tang <davidm@azstarnet.com>cvs/libc-960619
* sysdeps/generic/memcmp.c: Add prototype decls for internal fns. * locale/programs/locale.c: Include string.h. * sunrpc/xdr_stdio.c (xdrstdio_getlong), sunrpc/xdr_rec.c (xdrrec_getlong), sunrpc/xdr_mem.c (xdrmem_getlong): Make sure appropriate sign-extension is performed on machines with sizeof(long) > 4. * sunrpc/xdr.c (xdr_int, xdr_u_int): If sizeof(long)==8 and sizeof(int)<sizeof(long), we need to go through a temporary variable. * locale/programs/ld-numeric.c: Include <alloca.h> * libio/stdio.h (__libc_fatal): Add prototype. * libio/cleanup.c: Use __P() to declare prototype when __STDC__ is in efect. * libio/iopopen.c (read_or_write, parent_end, child_end): Declare volatile to avoid "might get clobbered by longjmp" warning. * features.h (__KERNEL_STRICT_NAMES): Define __KERNEL_STRICT_NAMES unless _LOOSE_KERNEL_NAMES is in effect (which, with high probability is a sure loser). * sysdeps/unix/sysv/linux/gnu/types.h (__KERNEL_STRICT_NAMES): Remove. * sysdeps/unix/bsd/osf/alpha/start.S (errno): Removed. * sysdeps/unix/sysv/linux/alpha/start.S: Ditto. * misc/paths.h (_PATH_MAN): Change from /usr/share/man to /usr/man to be Linux FSSTND compliant. Mon Jun 10 17:50:31 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/pipe.S: Use PSEUDO. * sysdeps/unix/sysv/linux/alpha/sysdep.S, sysdeps/unix/sysv/linux/alpha/brk.S, sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S, sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S, sysdeps/unix/sysv/linux/alpha/llseek.S, sysdeps/unix/sysv/linux/alpha/sigsuspend.S, sysdeps/unix/sysv/linux/alpha/syscall.S: Rename syscall_error to __syscall_error to avoid intruding application name space. * sysdeps/unix/sysv/linux/alpha/sysdep.h: Rename __NR_get?id to SYS_get?id so that syscall stubs in sysdeps/unix define these syscalls in terms of getxpid/getxuid/getxgid. * sysdeps/unix/_exit.S, sysdeps/unix/getegid.S, sysdeps/unix/geteuid.S, sysdeps/unix/getppid.S, sysdeps/unix/execve.S, sysdeps/unix/fork.S, sysdeps/unix/syscall.S: Terminate syscall with PSEUDO_END. * sysdeps/unix/make-syscalls.sh, sysdeps/unix/sysdep.h (PSEUDO_END): Rename END() to PSEUDO_END(). * sysdeps/unix/alpha/sysdep.h: Move error-handling code in PSEUDO to PSEUDO_END to improve branch-prediction. Include .frame directive to make syscalls debugabble. (PSEUDO_END): New macro. * sysdeps/unix/alpha/sysdep.h, sysdeps/alpha/bb_init_func.S, sysdeps/unix/sysv/linux/alpha/brk.S: Use ldiq instead of ldi since latter is illegal under DEC Unix. * sysdeps/unix/alpha/sysdep.S: Renamed from sysdeps/unix/sysv/linux/alpha/sysdep.S. This file works for OSF/1 as well. * sysdeps/unix/bsd/osf/alpha/sysdep.S: Remove (note that the EWOULDBLOCK -> EAGAIN mapping was unnecessary since EWOULDBLOCK==EAGAIN under DEC Unix and Linux/Alpha). * sysdeps/alpha/divrem.h: Use retaddr instead of ra as the return address register in the .frame directive. * sysdeps/alpha/copysign.c: Remove. * sunrpc/rpc/types.h: Include <sys/param.h> and <netinet/in.h> to avoid RPC definitions of INADDR_LOOPBACK and/or MAXHOSTNAMELEN. * errno.h: Move __END_DECLS to correct place to make file compilable under c++. * dirent/dirent.h: Document _DIRENT_HAVE_D_OFF macro. Define d_ino only if <direntry.h> hasn't defined d_fileno. * configure.in (HAVE_ASM_WEAKEXT_DIRECTIVE): Reverse order of arguments to weakext to make .weakext detection work on ECOFF systems. * FAQ: Add Linux/Alpha to list of supported platforms. Mention that _validuser() has been replaced by __ivaliduser(). Thu Jun 6 21:39:38 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/bsd/sun/sunos4/tcsetattr.c (tcsetattr): Declare cmd as unsigned long, not as int (to avoid incorrect int->long promotion).
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/_exit.S1
-rw-r--r--sysdeps/unix/alpha/sysdep.S (renamed from sysdeps/unix/sysv/linux/alpha/sysdep.S)9
-rw-r--r--sysdeps/unix/alpha/sysdep.h50
-rw-r--r--sysdeps/unix/bsd/osf/alpha/start.S2
-rw-r--r--sysdeps/unix/bsd/osf/alpha/sysdep.S40
-rw-r--r--sysdeps/unix/bsd/sun/sunos4/tcsetattr.c2
-rw-r--r--sysdeps/unix/execve.S1
-rw-r--r--sysdeps/unix/fork.S1
-rw-r--r--sysdeps/unix/getegid.S1
-rw-r--r--sysdeps/unix/geteuid.S1
-rw-r--r--sysdeps/unix/getppid.S1
-rw-r--r--sysdeps/unix/make-syscalls.sh2
-rw-r--r--sysdeps/unix/syscall.S1
-rw-r--r--sysdeps/unix/sysdep.h6
-rw-r--r--sysdeps/unix/sysv/linux/alpha/brk.S4
-rw-r--r--sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S4
-rw-r--r--sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S4
-rw-r--r--sysdeps/unix/sysv/linux/alpha/llseek.S10
-rw-r--r--sysdeps/unix/sysv/linux/alpha/pipe.S16
-rw-r--r--sysdeps/unix/sysv/linux/alpha/sigsuspend.S4
-rw-r--r--sysdeps/unix/sysv/linux/alpha/start.S95
-rw-r--r--sysdeps/unix/sysv/linux/alpha/syscall.S18
-rw-r--r--sysdeps/unix/sysv/linux/alpha/sysdep.h12
-rw-r--r--sysdeps/unix/sysv/linux/gnu/types.h7
24 files changed, 129 insertions, 163 deletions
diff --git a/sysdeps/unix/_exit.S b/sysdeps/unix/_exit.S
index a171689473..50eb687d68 100644
--- a/sysdeps/unix/_exit.S
+++ b/sysdeps/unix/_exit.S
@@ -20,3 +20,4 @@ Cambridge, MA 02139, USA. */
PSEUDO (_exit, exit, 1)
/* Shouldn't get here. */
+PSEUDO_END(_exit)
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.S b/sysdeps/unix/alpha/sysdep.S
index 84582f404e..3e7666ff61 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep.S
+++ b/sysdeps/unix/alpha/sysdep.S
@@ -20,7 +20,12 @@ Cambridge, MA 02139, USA. */
#define _ERRNO_H
#include <errnos.h>
-LEAF(syscall_error, 0)
+ .comm errno, 4
+#ifdef __ELF__
+ .type errno, @object
+#endif
+
+LEAF(__syscall_error, 0)
.prologue 1
/* Store return value in errno... */
@@ -31,4 +36,4 @@ LEAF(syscall_error, 0)
ldi v0, -1
ret
- .end syscall_error
+ END(__syscall_error)
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
index 6fed4a6adf..4b3f9aa5d8 100644
--- a/sysdeps/unix/alpha/sysdep.h
+++ b/sysdeps/unix/alpha/sysdep.h
@@ -58,25 +58,27 @@ Cambridge, MA 02139, USA. */
.frame sp, 0, ra
#endif
-/* Note that while it's better structurally, going back to set errno
- can make things confusing if you're debugging---it looks like it's jumping
- backwards into the previous fn. */
+/* Mark the end of function SYM. */
+#undef END
+#define END(sym) .end sym
+
+/* Note that PSEUDO/PSEUDO_END use label number 1996---do not use a
+ label of that number between those two macros! */
+
#ifdef __STDC__
#define PSEUDO(name, syscall_name, args) \
.globl name; \
.align 3; \
.ent name,0; \
\
-1: br gp, 2f; \
-2: ldgp gp, 0(gp); \
- jmp zero, syscall_error; \
- \
name##: \
- ldi v0, SYS_ify(syscall_name); \
+ .frame sp, 0, ra \
+ .prologue 1; /* yes, we do use gp */ \
+ ldiq v0, SYS_ify(syscall_name); \
.set noat; \
call_pal PAL_callsys; \
.set at; \
- bne a3, 1b; \
+ bne a3, 1996f; \
3:
#else
#define PSEUDO(name, syscall_name, args) \
@@ -84,21 +86,35 @@ name##: \
.align 3; \
.ent name,0; \
\
-1: br gp, 2f; \
-2: ldgp gp, 0(gp); \
- jmp zero, syscall_error; \
- \
name/**/: \
- ldi v0, SYS_ify(syscall_name); \
+ .frame sp, 0, ra \
+ .prologue 1; /* yes, we do use gp */ \
+ ldiq v0, SYS_ify(syscall_name); \
.set noat; \
call_pal PAL_callsys; \
.set at; \
- bne a3, 1b; \
+ bne a3, 1996f; \
3:
#endif
-#undef END
-#define END(sym) .end sym
+#undef PSEUDO_END
+
+#ifdef PIC
+/* When building a shared library, we can use a branch since the text
+ section of the library is much smaller than 4MB. If we ever break
+ this assumption, the linker will tell us. */
+# define PSEUDO_END(sym) \
+1996: \
+ br zero, __syscall_error; \
+ END(sym)
+#else
+# define PSEUDO_END(sym) \
+1996: \
+ br gp, 2f; \
+2: ldgp gp, 0(gp); \
+ jmp zero, __syscall_error; \
+ END(sym)
+#endif
#define r0 v0
#define r1 a4
diff --git a/sysdeps/unix/bsd/osf/alpha/start.S b/sysdeps/unix/bsd/osf/alpha/start.S
index f3995a2fd6..d5ff14055b 100644
--- a/sysdeps/unix/bsd/osf/alpha/start.S
+++ b/sysdeps/unix/bsd/osf/alpha/start.S
@@ -18,8 +18,6 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
-.comm errno, 4
-
#if 0
.sdata
.globl STARTFRM
diff --git a/sysdeps/unix/bsd/osf/alpha/sysdep.S b/sysdeps/unix/bsd/osf/alpha/sysdep.S
deleted file mode 100644
index bc4865cef2..0000000000
--- a/sysdeps/unix/bsd/osf/alpha/sysdep.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright (C) 1993 Free Software Foundation, Inc.
- Contributed by Brendan Kehoe (brendan@zen.org).
-
-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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <sysdep.h>
-#define _ERRNO_H
-#include <errnos.h>
-
-ENTRY(syscall_error)
-#ifdef EWOULDBLOCK_sys
- /* We translate the system's EWOULDBLOCK error into EAGAIN.
- The GNU C library always defines EWOULDBLOCK==EAGAIN.
- EWOULDBLOCK_sys is the original number. */
- subq v0, EWOULDBLOCK_sys, t0
- cmoveq t0, EAGAIN, v0
-#endif
-
- /* Store it in errno... */
-! ldgp gp, 0(t12)
- stl v0, errno
-
- /* And just kick back a -1. */
- ldil v0, -1
- ret
-
- .end syscall_error
diff --git a/sysdeps/unix/bsd/sun/sunos4/tcsetattr.c b/sysdeps/unix/bsd/sun/sunos4/tcsetattr.c
index 4ae139a1f8..f88951ff9d 100644
--- a/sysdeps/unix/bsd/sun/sunos4/tcsetattr.c
+++ b/sysdeps/unix/bsd/sun/sunos4/tcsetattr.c
@@ -27,7 +27,7 @@ int
DEFUN(tcsetattr, (fd, optional_actions, termios_p),
int fd AND int optional_actions AND CONST struct termios *termios_p)
{
- int cmd;
+ unsigned long cmd;
switch (optional_actions)
{
diff --git a/sysdeps/unix/execve.S b/sysdeps/unix/execve.S
index 7a4fc139ec..5d48bc63d8 100644
--- a/sysdeps/unix/execve.S
+++ b/sysdeps/unix/execve.S
@@ -28,5 +28,6 @@ Cambridge, MA 02139, USA. */
SYSCALL__ (execve, 3)
ret
+PSEUDO_END(execve)
weak_alias (__execve, execve)
diff --git a/sysdeps/unix/fork.S b/sysdeps/unix/fork.S
index 1c360c6ed2..b8b99720b1 100644
--- a/sysdeps/unix/fork.S
+++ b/sysdeps/unix/fork.S
@@ -28,5 +28,6 @@ SYSCALL__ (fork, 0)
subl #1, r1
andl r1, r0
ret
+PSEUDO_END(fork)
weak_alias (__fork, fork)
diff --git a/sysdeps/unix/getegid.S b/sysdeps/unix/getegid.S
index 1bd447b623..aff66bb555 100644
--- a/sysdeps/unix/getegid.S
+++ b/sysdeps/unix/getegid.S
@@ -25,5 +25,6 @@ PSEUDO (__getegid, getgid, 0)
MOVE(r1, r0)
#endif
ret
+PSEUDO_END(__getegid)
weak_alias (__getegid, getegid)
diff --git a/sysdeps/unix/geteuid.S b/sysdeps/unix/geteuid.S
index 339eb536f5..db4087f831 100644
--- a/sysdeps/unix/geteuid.S
+++ b/sysdeps/unix/geteuid.S
@@ -25,5 +25,6 @@ PSEUDO (__geteuid, getuid, 0)
MOVE(r1, r0)
#endif
ret
+PSEUDO_END(__geteuid)
weak_alias (__geteuid, geteuid)
diff --git a/sysdeps/unix/getppid.S b/sysdeps/unix/getppid.S
index 132c3740a0..3f0c7456b5 100644
--- a/sysdeps/unix/getppid.S
+++ b/sysdeps/unix/getppid.S
@@ -25,5 +25,6 @@ PSEUDO (__getppid, getpid, 0)
MOVE(r1, r0)
#endif
ret
+PSEUDO_END(__getppid)
weak_alias (__getppid, getppid)
diff --git a/sysdeps/unix/make-syscalls.sh b/sysdeps/unix/make-syscalls.sh
index 5251e84cb9..260769ed7b 100644
--- a/sysdeps/unix/make-syscalls.sh
+++ b/sysdeps/unix/make-syscalls.sh
@@ -62,7 +62,7 @@ EOF
(echo '#include <sysdep.h>'; \\
echo 'PSEUDO ($strong, $syscall, $nargs)'; \\
echo ' ret'; \\
- echo 'END($strong)'; \\"
+ echo 'PSEUDO_END($strong)'; \\"
# Append any weak aliases defined for this syscall function.
for name in $weak; do
diff --git a/sysdeps/unix/syscall.S b/sysdeps/unix/syscall.S
index e3ef1775dc..d3f13dcc4f 100644
--- a/sysdeps/unix/syscall.S
+++ b/sysdeps/unix/syscall.S
@@ -27,3 +27,4 @@ Cambridge, MA 02139, USA. */
SYSCALL (syscall, 1)
ret
+PSEUDO_END(syscall)
diff --git a/sysdeps/unix/sysdep.h b/sysdeps/unix/sysdep.h
index 0dde0b04a6..24be0063e0 100644
--- a/sysdeps/unix/sysdep.h
+++ b/sysdeps/unix/sysdep.h
@@ -55,6 +55,6 @@ Cambridge, MA 02139, USA. */
#define SYS_ify(syscall_name) SYS_/**/syscall_name
#endif
-/* Terminate a function named SYM. This is used on some platforms to
- generate correct debugging information. */
-#define END(sym)
+/* Terminate a system call named SYM. This is used on some platforms
+ to generate correct debugging information. */
+#define PSEUDO_END(sym)
diff --git a/sysdeps/unix/sysv/linux/alpha/brk.S b/sysdeps/unix/sysv/linux/alpha/brk.S
index 1c4a4f9217..26bf97f2bd 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk.S
+++ b/sysdeps/unix/sysv/linux/alpha/brk.S
@@ -30,7 +30,7 @@ LEAF(__brk, 0)
ldgp gp, 0(t12)
.prologue 1
- ldi v0, __NR_brk
+ ldiq v0, __NR_brk
call_pal PAL_callsys
/* Correctly handle the brk(0) query case. */
@@ -46,7 +46,7 @@ LEAF(__brk, 0)
/* What a horrible way to die. */
error: ldi v0, ENOMEM
- jmp zero, syscall_error
+ jmp zero, __syscall_error
END(__brk)
diff --git a/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S b/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
index 52c945aec2..e09fa738e2 100644
--- a/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
+++ b/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
@@ -24,7 +24,7 @@ Cambridge, MA 02139, USA. */
LEAF(__ieee_get_fp_control, 8)
lda sp, -8(sp)
- .prologue 0
+ .prologue 1
mov sp, a1
ldi a0, GSI_IEEE_FP_CONTROL
@@ -39,7 +39,7 @@ LEAF(__ieee_get_fp_control, 8)
error: lda sp, 8(sp)
br gp, 1f
1: ldgp gp, 0(gp)
- jmp zero, syscall_error
+ jmp zero, __syscall_error
END(__ieee_get_fp_control)
diff --git a/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S b/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
index d72585daf1..d748c81142 100644
--- a/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
+++ b/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
@@ -22,7 +22,7 @@ Cambridge, MA 02139, USA. */
LEAF(__ieee_set_fp_control, 8)
lda sp, -8(sp)
- .prologue 0
+ .prologue 1
stq a0, 0(sp)
mov sp, a1
@@ -37,7 +37,7 @@ LEAF(__ieee_set_fp_control, 8)
error: br gp, 1f
1: ldgp gp, 0(gp)
- jmp zero, syscall_error
+ jmp zero, __syscall_error
END(__ieee_set_fp_control)
diff --git a/sysdeps/unix/sysv/linux/alpha/llseek.S b/sysdeps/unix/sysv/linux/alpha/llseek.S
index bd8c6595c9..6020f263cd 100644
--- a/sysdeps/unix/sysv/linux/alpha/llseek.S
+++ b/sysdeps/unix/sysv/linux/alpha/llseek.S
@@ -18,19 +18,17 @@ Cambridge, MA 02139, USA. */
/* For compatibility only: a "long" is 64 bits on the Alpha, so
llseek() isn't really needed. But there are some programs out
- there who may depend on it being around.
-*/
+ there who may depend on it being around. */
#include <sysdep.h>
.text
ENTRY(llseek)
- .prologue 0
-
- mov a3, t0 /* save result address */
+ .prologue 1
sll a1, 32, a1 /* build a 64 bit ofs out of 32 bit operands */
zap a2, 0xf0, a2
+ mov a3, t0 /* save result address */
bis a2, a1, a1
mov a4, a2 /* shift down whence */
@@ -44,6 +42,6 @@ ENTRY(llseek)
error: br gp, 1f
1: ldgp gp, 0(gp)
- jmp zero, syscall_error
+ jmp zero, __syscall_error
END(llseek)
diff --git a/sysdeps/unix/sysv/linux/alpha/pipe.S b/sysdeps/unix/sysv/linux/alpha/pipe.S
index b23803cecd..60334adb45 100644
--- a/sysdeps/unix/sysv/linux/alpha/pipe.S
+++ b/sysdeps/unix/sysv/linux/alpha/pipe.S
@@ -20,23 +20,11 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
- .text
-LEAF(__pipe, 0)
- .prologue 0
-
- ldi v0, __NR_pipe
- call_pal PAL_callsys
- bne a3, error
-
+PSEUDO (__pipe, pipe, 0)
stl r0, 0(a0)
stl r1, 4(a0)
mov zero, v0
ret
-
-error: br gp, 1f
-1: ldgp gp, 0(gp)
- jmp zero, syscall_error
-
- END(__pipe)
+PSEUDO_END(__pipe)
weak_alias (__pipe, pipe)
diff --git a/sysdeps/unix/sysv/linux/alpha/sigsuspend.S b/sysdeps/unix/sysv/linux/alpha/sigsuspend.S
index 26a1869783..aaae9a308a 100644
--- a/sysdeps/unix/sysv/linux/alpha/sigsuspend.S
+++ b/sysdeps/unix/sysv/linux/alpha/sigsuspend.S
@@ -24,7 +24,7 @@ Cambridge, MA 02139, USA. */
.text
LEAF(sigsuspend, 0)
- .prologue 0
+ .prologue 1
ldq a0, 0(a0)
ldi v0, __NR_sigsuspend
@@ -34,6 +34,6 @@ LEAF(sigsuspend, 0)
error: br gp, 1f
1: ldgp gp, 0(gp)
- jmp zero, syscall_error
+ jmp zero, __syscall_error
END(sigsuspend)
diff --git a/sysdeps/unix/sysv/linux/alpha/start.S b/sysdeps/unix/sysv/linux/alpha/start.S
index a7099f6840..bffa913538 100644
--- a/sysdeps/unix/sysv/linux/alpha/start.S
+++ b/sysdeps/unix/sysv/linux/alpha/start.S
@@ -1,5 +1,5 @@
/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
- Contributed by Brendan Kehoe (brendan@zen.org).
+ Contributed by Richard Henderson <rth@tamu.edu>
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
@@ -18,81 +18,76 @@ Cambridge, MA 02139, USA. */
#include <sysdep.h>
- .comm errno, 4
-#ifdef __ELF__
- .type errno, @object
-#endif
-
.text
-LEAF(__start, 16)
- lda sp, -16(sp)
- .prologue 0
-
- stq zero, 8(sp) /* terminate frame chain */
-
- br t0, 1f
-1: ldgp gp, 0(t0)
-
- mov zero, a0 /* establish __fpu_control w/kernel */
- jsr ra, __setfpucw
+ .globl __start
+ .align 3
+ .ent __start, 0
+__start:
+ .frame fp, 0, zero
+ mov zero, fp
+ br gp, 1f
+1: ldgp gp, 0(gp)
+ .prologue 1
+
+ /* Save v0. When starting a binary via the dynamic linker, s0
+ contains the address of the shared library termination function,
+ which we will register below with atexit() to be called by exit().
+ If we are statically linked, this will be NULL. */
+ mov v0, s0
+
+ /* Do essential libc initialization (sp points to argc, argv, and envp) */
+ jsr ra, __libc_init_first
ldgp gp, 0(ra)
- /* clear out errno. */
- stl zero, (errno)
+ /* Now that we have the proper stack frame, register library termination
+ function, if there is any: */
- ldl a0, 16(sp) /* get argc */
- lda a1, 24(sp) /* get argv */
+ beq s0, 1f
+ mov s0, a0
+ jsr ra, atexit
+ ldgp gp, 0(ra)
+1:
- /* initialize environ: */
- lda t0, environ
- s8addq a0, a1, a2
- addq a2, 0x8, a2
- stq a2, 0(t0)
+ /* Extract the arguments and environment as encoded on the stack. */
+ ldl a0, 0(sp) /* get argc */
+ lda a1, 8(sp) /* get argv */
+ s8addq a0, a1, a2 /* get envp */
+ addq a2, 8, a2
+ stq a2, _environ
- mov a0, s0
+ mov a0, s0 /* tuck them away */
mov a1, s1
mov a2, s2
#ifdef HAVE_INITFINI
- /* register the _fini sections to ensure destructors get run: */
- lda a0, _fini
- jsr ra, atexit
- ldgp gp, 0(ra)
-
- /* Now run the _init section of the program itself. The _init
- sections of shared libraries will be run by the dynamic linker. */
+ /* Call _init, the entry point to our own .init section. */
jsr ra, _init
ldgp gp, 0(ra)
- /* initialize constructors: */
- jsr ra, __main
+ /* Register our .fini section with atexit. */
+ lda a0, _fini
+ jsr ra, atexit
ldgp gp, 0(ra)
#else
- jsr ra, __libc_init
+ /* initialize constructors: */
+ jsr ra, __main
ldgp gp, 0(ra)
#endif
-
mov s0, a0
mov s1, a1
mov s2, a2
+ /* Call the user's main and exit with its return value. */
jsr ra, main
ldgp gp, 0(ra)
mov v0, a0
+ jsr ra, exit
- lda pv, exit
- jsr ra, (pv), 1
- ldgp gp, 0(ra)
-
- /* in case exit returns: */
-
-1: ldi v0, __NR_exit
- call_pal PAL_callsys
- br 1b
-
- .end __start
-
+ /* Die very horribly if exit returns. Call_pal hlt is callable from
+ kernel mode only; this will result in an illegal instruction trap. */
+ call_pal 0
+END(__start)
/* Define a symbol for the first piece of initialized data. */
.data
diff --git a/sysdeps/unix/sysv/linux/alpha/syscall.S b/sysdeps/unix/sysv/linux/alpha/syscall.S
index c80a523239..f1b36e9312 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscall.S
+++ b/sysdeps/unix/sysv/linux/alpha/syscall.S
@@ -42,19 +42,19 @@ Cambridge, MA 02139, USA. */
LEAF(__syscall, 0)
- bis a0, a0, v0 # Syscall number -> v0
- bis a1, a1, a0 # arg1-arg5 -> a0-a4
- bis a2, a2, a1
- bis a3, a3, a2
- bis a4, a4, a3
- bis a5, a5, a4
-
- call_pal PAL_callsys # Invoke system call
+ mov a0, v0 /* Syscall number -> v0 */
+ mov a1, a0 /* arg1-arg5 -> a0-a4 */
+ mov a2, a1
+ mov a3, a2
+ mov a4, a3
+ mov a5, a4
+
+ call_pal PAL_callsys /* Invoke system call */
bne a3, error
ret
error: br gp, 2f
2: ldgp gp, 0(gp)
- jmp zero, syscall_error
+ jmp zero, __syscall_error
weak_alias(__syscall, syscall)
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.h b/sysdeps/unix/sysv/linux/alpha/sysdep.h
index 627b37e4fb..8f5f5dde61 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep.h
@@ -38,15 +38,15 @@ Cambridge, MA 02139, USA. */
# define SYS_ify(syscall_name) __NR_/**/syscall_name
#endif
-/*
- * Define some aliases for syscalls that return two values (in r0 and r1):
- */
+/* Define some aliases to make automatic syscall generation work
+ properly. The SYS_* variants are for the benefit of the files in
+ sysdeps/unix. */
#define __NR_getpid __NR_getxpid
-#define __NR_getppid __NR_getxpid
#define __NR_getuid __NR_getxuid
-#define __NR_geteuid __NR_getxuid
#define __NR_getgid __NR_getxgid
-#define __NR_getegid __NR_getxgid
+#define SYS_getpid __NR_getxpid
+#define SYS_getuid __NR_getxuid
+#define SYS_getgid __NR_getxgid
/*
* Some syscalls no Linux program should know about:
diff --git a/sysdeps/unix/sysv/linux/gnu/types.h b/sysdeps/unix/sysv/linux/gnu/types.h
index 402df2aa4c..0bc072b092 100644
--- a/sysdeps/unix/sysv/linux/gnu/types.h
+++ b/sysdeps/unix/sysv/linux/gnu/types.h
@@ -19,10 +19,9 @@ Cambridge, MA 02139, USA. */
#ifndef _GNU_TYPES_H
#define _GNU_TYPES_H 1
-/* Get actual type definitions for architecture from kernel headers.
- This #define tells <linux/types.h> not to define `dev_t' et al itself. */
-#define __KERNEL_STRICT_NAMES
-#define _LINUX_TYPES_DONT_EXPORT
+#include <features.h>
+
+/* Get actual type definitions for architecture from kernel headers. */
#include <linux/types.h>
/* Convenience types. */