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@@ -1,6 +1,7 @@
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-/* Startup code for programs linked with GNU libc.
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- Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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+/* Startup code for elf32-sparc
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+ Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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+ Contributed by Richard Henderson <[email protected]>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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@@ -17,67 +18,44 @@
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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- .section ".text"
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- .globl _start
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-_start:
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- /* Save the stack pointer, in case we're statically linked under Linux. */
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- mr 9,1
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- /* Set up an initial stack frame, and clear the LR. */
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- clrrwi 1,1,4
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- li 0,0
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- stwu 1,-16(1)
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- mtlr 0
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- stw 0,0(1)
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- bl PASCALMAIN
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-
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- .globl _haltproc
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- .type _haltproc,@function
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-_haltproc:
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- li 0,1 /* exit call */
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- lis 3,U_SYSTEM_EXITCODE@h
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- stw 3,U_SYSTEM_EXITCODE@l(3)
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- sc
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- b _haltproc
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-
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- /* Define a symbol for the first piece of initialized data. */
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- .section ".data"
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- .globl __data_start
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-__data_start:
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-data_start:
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- .globl ___fpc_brk_addr /* heap management */
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- .type ___fpc_brk_addr,@object
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- .size ___fpc_brk_addr,4
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-___fpc_brk_addr:
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- .long 0
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-/*
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- $Log$
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- Revision 1.1 2002-11-15 12:08:37 mazen
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- + SPARC support added based on PowerPc sources
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-
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- Revision 1.9 2002/09/07 16:01:20 peter
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- * old logs removed and tabs fixed
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-
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- Revision 1.8 2002/08/31 21:29:57 florian
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- * several PC related fixes
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+#include <sysdep.h>
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- Revision 1.7 2002/08/31 16:13:12 florian
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- * made _start global
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- Revision 1.6 2002/08/31 14:02:23 florian
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- * r3 renamed to 3
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-
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- Revision 1.5 2002/08/31 14:01:28 florian
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- * _haltproc to prt0.as added (Linux/PPC)
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-
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- Revision 1.4 2002/08/31 13:11:11 florian
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- * several fixes for Linux/PPC compilation
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-
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- Revision 1.3 2002/08/19 21:19:15 florian
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- * small fixes
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-
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- Revision 1.2 2002/07/26 17:09:44 florian
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- * log fixed
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+ .section ".text"
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+ .align 4
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+ .global _start
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+ .type _start,#function
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+_start:
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- Revision 1.1 2002/07/26 16:57:40 florian
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- + initial version, plain copy from glibc/sysdeps/powerpc/elf/start.S
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-*/
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+ /* Terminate the stack frame, and reserve space for functions to
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+ drop their arguments. */
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+ mov %g0, %fp
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+ sub %sp, 6*4, %sp
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+
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+ /* Extract the arguments and environment as encoded on the stack. The
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+ argument info starts after one register window (16 words) past the SP. */
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+ ld [%sp+22*4], %o1
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+ add %sp, 23*4, %o2
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+
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+ /* Load the addresses of the user entry points. */
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+ sethi %hi(main), %o0
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+ sethi %hi(_init), %o3
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+ sethi %hi(_fini), %o4
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+ or %o0, %lo(main), %o0
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+ or %o3, %lo(_init), %o3
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+ or %o4, %lo(_fini), %o4
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+
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+ /* When starting a binary via the dynamic linker, %g1 contains the
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+ address of the shared library termination function, which will be
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+ registered with atexit(). If we are statically linked, this will
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+ be NULL. */
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+ mov %g1, %o5
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+
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+ /* Let libc do the rest of the initialization, and call main. */
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+ call __libc_start_main
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+ nop
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+
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+ /* Die very horribly if exit returns. */
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+ unimp
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+
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+ .size _start, .-_start
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mazen