diff options
Diffstat (limited to 'sysdeps/unix')
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. */ |