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-rw-r--r--sysdeps/unix/sparc/brk.S55
-rw-r--r--sysdeps/unix/sparc/fork.S30
-rw-r--r--sysdeps/unix/sparc/pipe.S29
-rw-r--r--sysdeps/unix/sparc/start.c184
-rw-r--r--sysdeps/unix/sparc/sysdep.S47
-rw-r--r--sysdeps/unix/sparc/sysdep.h50
-rw-r--r--sysdeps/unix/sparc/vfork.S34
7 files changed, 429 insertions, 0 deletions
diff --git a/sysdeps/unix/sparc/brk.S b/sysdeps/unix/sparc/brk.S
new file mode 100644
index 0000000000..7906695890
--- /dev/null
+++ b/sysdeps/unix/sparc/brk.S
@@ -0,0 +1,55 @@
+/* Copyright (C) 1993, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdep.h>
+
+#ifndef SYS_brk
+#define SYS_brk 17
+#endif
+
+#ifndef C_SYMBOL_NAME
+#define C_SYMBOL_NAME(name) _##name
+#endif
+
+.data
+.global C_SYMBOL_NAME(__curbrk)
+C_LABEL(__curbrk)
+#ifdef HAVE_GNU_LD
+ .long C_SYMBOL_NAME(_end)
+#else
+ .long C_SYMBOL_NAME(end)
+#endif
+
+.text
+ENTRY (__brk)
+ add %o0, 7, %o0
+ andn %o0, 7, %o0
+ mov SYS_brk, %g1
+ mov %o0, %o1 /* Save rounded value. */
+ ta %g0
+ bcs error
+ sethi %hi(C_SYMBOL_NAME(__curbrk)), %g1
+ st %o1, [%g1 + %lo(C_SYMBOL_NAME(__curbrk))]
+ ret
+error: sethi %hi(C_SYMBOL_NAME(errno)), %g1
+ st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
+ sub %g0, 1, %o0
+ retl
+ nop /* Fill the delay slot. */
+
+weak_alias (__brk, brk)
diff --git a/sysdeps/unix/sparc/fork.S b/sysdeps/unix/sparc/fork.S
new file mode 100644
index 0000000000..dee15ad701
--- /dev/null
+++ b/sysdeps/unix/sparc/fork.S
@@ -0,0 +1,30 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdep.h>
+
+SYSCALL__ (fork, 0)
+ /* %o1 is now 0 for the parent and 1 for the child. Decrement it to
+ make it -1 (all bits set) for the parent, and 0 (no bits set)
+ for the child. Then AND it with %o0, so the parent gets
+ %o0&-1==0, and the child gets %o0&0==0. */
+ sub %o1, 1, %o1
+ retl
+ and %o0, %o1, %o0
+
+weak_alias (__fork, fork)
diff --git a/sysdeps/unix/sparc/pipe.S b/sysdeps/unix/sparc/pipe.S
new file mode 100644
index 0000000000..3929413783
--- /dev/null
+++ b/sysdeps/unix/sparc/pipe.S
@@ -0,0 +1,29 @@
+/* Copyright (C) 1991, 1992, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdep.h>
+
+ENTRY (__pipe)
+ mov %o0, %o2 /* Save PIPEDES. */
+PSEUDO (__Spipe, pipe, 1)
+ st %o0, [%o2] /* PIPEDES[0] = %o0; */
+ st %o1, [%o2 + 4] /* PIPEDES[1] = %o1; */
+ retl /* return 0; */
+ clr %o0
+
+weak_alias (__pipe, pipe)
diff --git a/sysdeps/unix/sparc/start.c b/sysdeps/unix/sparc/start.c
new file mode 100644
index 0000000000..e0f39f5b73
--- /dev/null
+++ b/sysdeps/unix/sparc/start.c
@@ -0,0 +1,184 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#ifndef NO_SHLIB
+#include <sys/exec.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <link.h>
+#include <syscall.h>
+#endif
+
+#if !defined (__GNUC__) || __GNUC__ < 2
+ #error This file uses GNU C extensions; you must compile with GCC version 2.
+#endif
+
+/* The first piece of initialized data. */
+int __data_start = 0;
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__data_start, data_start)
+#endif
+
+VOLATILE int errno;
+
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__environ, environ)
+#else
+#undef environ
+#define __environ environ
+#endif
+
+char **__environ;
+
+extern void EXFUN(__libc_init, (int argc, char **argv, char **envp));
+extern int EXFUN(main, (int argc, char **argv, char **envp));
+
+register long int sp asm("%sp"), fp asm("%fp");
+
+#ifndef NO_SHLIB
+static void EXFUN(init_shlib, (NOARGS));
+#endif
+
+#ifndef NO_EXPLICIT_START
+/* Declare _start with an explicit assembly symbol name of `start'
+ (note no leading underscore). This is the name Sun's crt0.o uses,
+ and programs are often linked with `ld -e start'. */
+void _start (void) asm ("start");
+#endif
+
+void
+_start (void)
+{
+ /* It is important that these be declared `register'.
+ Otherwise, when compiled without optimization, they are put on the
+ stack, which loses completely after we zero the FP. */
+ register int argc;
+ register char **argv, **envp;
+
+ /* Unwind the frame built when we entered the function. */
+ asm("restore");
+
+ /* And clear the frame pointer. */
+ fp = 0;
+
+ /* The argument info starts after one register
+ window (64 bytes) past the SP. */
+ argc = ((int *) sp)[16];
+ argv = (char **) &((int *) sp)[17];
+ envp = &argv[argc + 1];
+ __environ = envp;
+
+#ifndef NO_SHLIB
+ init_shlib ();
+#endif
+
+ /* Allocate 24 bytes of stack space for the register save area. */
+ sp -= 24;
+ __libc_init (argc, argv, envp);
+
+ exit (main (argc, argv, envp));
+}
+
+#ifndef NO_SHLIB
+
+/* System calls for use by the bootstrap routine.
+ These are defined here since the usual calls may be dynamically linked. */
+
+int syscall (int sysno, ...) asm ("init_syscall");
+asm ("init_syscall:\n"
+ " clr %g1\n"
+ " ta 0\n"
+ " bcc 1f\n"
+ " sethi %hi(_errno), %g1\n"
+ " st %o0, [%g1 + %lo(_errno)]\n"
+ " sub %g0, 1, %o0\n"
+ "1:retl\n"
+ " nop");
+
+static void
+DEFUN_VOID(init_shlib)
+{
+ extern struct link_dynamic _DYNAMIC;
+ int so, zf;
+ caddr_t somap;
+ caddr_t sodmap;
+ caddr_t sobssmap;
+ void (*ldstart) (int, int);
+ struct exec soexec;
+ struct
+ {
+ caddr_t crt_ba;
+ int crt_dzfd;
+ int crt_ldfd;
+ struct link_dynamic *crt_dp;
+ char **crt_ep;
+ caddr_t crt_bp;
+ } soarg;
+
+ /* If not dynamically linked, do nothing. */
+ if (&_DYNAMIC == 0)
+ return;
+
+ /* Map in the dynamic linker. */
+ so = syscall (SYS_open, "/usr/lib/ld.so", O_RDONLY);
+ if (syscall (SYS_read, so, &soexec, sizeof (soexec)) != sizeof (soexec)
+ || soexec.a_magic != ZMAGIC)
+ {
+ static CONST char emsg[] = "crt0: no /usr/lib/ld.so\n";
+
+ syscall (SYS_write, 2, emsg, sizeof (emsg) - 1);
+ syscall (SYS_exit, 127);
+ }
+ somap = (caddr_t) syscall (SYS_mmap, 0,
+ soexec.a_text + soexec.a_data + soexec.a_bss,
+ PROT_READ | PROT_EXEC, _MAP_NEW | MAP_PRIVATE,
+ so, 0);
+ sodmap = (caddr_t) syscall (SYS_mmap, somap + soexec.a_text, soexec.a_data,
+ PROT_READ | PROT_WRITE | PROT_EXEC,
+ _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
+ so, soexec.a_text);
+ zf = syscall (SYS_open, "/dev/zero", O_RDONLY);
+ if (soexec.a_bss != 0)
+ sobssmap = (caddr_t) syscall (SYS_mmap,
+ somap + soexec.a_text + soexec.a_data,
+ soexec.a_bss,
+ PROT_READ | PROT_WRITE | PROT_EXEC,
+ _MAP_NEW | MAP_FIXED | MAP_PRIVATE,
+ zf, 0);
+
+ /* Call the entry point of the dynamic linker. */
+ soarg.crt_ba = somap;
+ soarg.crt_dzfd = zf;
+ soarg.crt_ldfd = so;
+ soarg.crt_dp = &_DYNAMIC;
+ soarg.crt_ep = __environ;
+ soarg.crt_bp = (caddr_t) &&retaddr;
+
+ ldstart = (__typeof (ldstart)) (somap + soexec.a_entry);
+ (*ldstart) (1, (char *) &soarg - (char *) sp);
+
+ retaddr:
+}
+
+#endif
diff --git a/sysdeps/unix/sparc/sysdep.S b/sysdeps/unix/sparc/sysdep.S
new file mode 100644
index 0000000000..d04a778794
--- /dev/null
+++ b/sysdeps/unix/sparc/sysdep.S
@@ -0,0 +1,47 @@
+/* Copyright (C) 1994 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdep.h>
+#define _ERRNO_H
+#include <errnos.h>
+
+.global C_SYMBOL_NAME(errno)
+.global syscall_error
+
+.text
+.align 2
+#undef syscall_error
+#ifdef NO_UNDERSCORES
+__syscall_error:
+#else
+syscall_error:
+#endif
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+ /* We translate the system's EWOULDBLOCK error into EAGAIN.
+ The GNU C library always defines EWOULDBLOCK==EAGAIN.
+ EWOULDBLOCK_sys is the original number. */
+ cmp %o0, EWOULDBLOCK_sys
+ be,a notblock
+ mov EAGAIN, %o0
+#endif
+notblock: /* Store the error code in `errno'. */
+ sethi %hi(C_SYMBOL_NAME(errno)), %g1
+ st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
+ /* And return -1. */
+ retl
+ mov -1, %o0
diff --git a/sysdeps/unix/sparc/sysdep.h b/sysdeps/unix/sparc/sysdep.h
new file mode 100644
index 0000000000..eab661c1ab
--- /dev/null
+++ b/sysdeps/unix/sparc/sysdep.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 1993, 1994, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdeps/unix/sysdep.h>
+
+#ifdef ASSEMBLER
+
+#ifdef NO_UNDERSCORES
+/* Since C identifiers are not normally prefixed with an underscore
+ on this system, the asm identifier `syscall_error' intrudes on the
+ C name space. Make sure we use an innocuous name. */
+#define syscall_error C_SYMBOL_NAME(__syscall_error)
+#endif
+
+#define ENTRY(name) \
+ .global C_SYMBOL_NAME(name); \
+ .align 2; \
+ C_LABEL(name)
+
+#define PSEUDO(name, syscall_name, args) \
+ .global syscall_error; \
+ ENTRY (name) \
+ mov SYS_ify(syscall_name), %g1; \
+ ta 0; \
+ bcc 1f; \
+ sethi %hi(syscall_error), %g1; \
+ jmp %g1 + %lo(syscall_error); nop; \
+1:
+
+#define ret retl; nop
+#define r0 %o0
+#define r1 %o1
+#define MOVE(x,y) mov x, y
+
+#endif /* ASSEMBLER */
diff --git a/sysdeps/unix/sparc/vfork.S b/sysdeps/unix/sparc/vfork.S
new file mode 100644
index 0000000000..aeee3785f6
--- /dev/null
+++ b/sysdeps/unix/sparc/vfork.S
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sysdep.h>
+
+#ifndef SYS_vfork
+#define SYS_vfork 66
+#endif
+
+SYSCALL__ (vfork, 0)
+ /* %o1 is now 0 for the parent and 1 for the child. Decrement it to
+ make it -1 (all bits set) for the parent, and 0 (no bits set)
+ for the child. Then AND it with %o0, so the parent gets
+ %o0&-1==0, and the child gets %o0&0==0. */
+ sub %o1, 1, %o1
+ retl
+ and %o0, %o1, %o0
+
+weak_alias (__vfork, vfork)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 16:42:17 +0000