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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/alpha/sysdep.h
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/alpha/sysdep.h')
-rw-r--r--sysdeps/unix/alpha/sysdep.h50
1 files changed, 33 insertions, 17 deletions
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