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Diffstat (limited to 'gcc/config/spu/crt0.c')
| -rw-r--r-- | gcc/config/spu/crt0.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/gcc/config/spu/crt0.c b/gcc/config/spu/crt0.c deleted file mode 100644 index eee1592..0000000 --- a/gcc/config/spu/crt0.c +++ /dev/null @@ -1,131 +0,0 @@ -/* Copyright (C) 2006 Free Software Foundation, Inc. - - This file is free software; you can redistribute it and/or modify it under - the terms of the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at your option) - any later version. - - This file 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 General Public License - for more details. - - You should have received a copy of the GNU General Public License - along with this file; see the file COPYING. If not, write to the Free - Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301, USA. */ - -/* As a special exception, if you link this library with files compiled with - GCC to produce an executable, this does not cause the resulting executable - to be covered by the GNU General Public License. The exception does not - however invalidate any other reasons why the executable file might be covered - by the GNU General Public License. */ - -extern int main(int, unsigned long long, unsigned long long); -void _start(int, unsigned long long, unsigned long long) __attribute__((__naked__)); - -extern void exit(int); - -void _exit(int) __attribute__((__naked__)); - -typedef void (*func_ptr) (void); -typedef __attribute__ ((__vector_size__(16))) unsigned int vec_uint4; - -extern vec_uint4 __stack[]; -register vec_uint4 si_sp __asm__("$sp"); -register unsigned int si_r2 __asm__("$2"); - -extern char _end[]; - -/* If we want these aligned we need to do it in the linker script. */ -func_ptr __CTOR_LIST__[1] - __attribute__ ((__section__(".ctors"), __aligned__(4))) - = { (func_ptr) (-1) }; - -static func_ptr __DTOR_LIST__[1] - __attribute__((__section__(".dtors"), __aligned__(4))) - = { (func_ptr) (-1) }; - -void *__dso_handle = 0; - -/* According to the BE Linux ABI an SPU module is called with these - * parameters. Also, $2 is set to the Available Stack Size. */ -void -_start(int spu_id, - unsigned long long param, - unsigned long long env) -{ - unsigned int stack_size; - unsigned int sp = (unsigned int)(__stack - 2); - - /* Initialize the stack. __stack has been set to point to the top - quadword of the stack. The ABI requires at least a NULL terminated - back chain and lr save area. For example: - +----------------+ - | 0 | - +----------------+ <- __stack (e.g., 0x3fff0) - | space for $lr | - +----------------+ - | back chain | - +----------------+ <- $sp (e.g., __stack - 32, 0x3ffd0) - */ - __stack[0] = (vec_uint4){0, 0, 0, 0}; - __stack[-1] = (vec_uint4){0, 0, 0, 0}; - - /* Initialize the Available Stack Size word of the Stack Pointer - * information register. The BE Linux ABI passes the stack size in - * $2, or use everything up to _end if $2 == 0. */ - stack_size = si_r2 == 0 ? sp - (unsigned int)_end : si_r2; - - __stack[-2] = (vec_uint4){(unsigned int)__stack, stack_size, 0, 0}; - - si_sp = (vec_uint4){sp, stack_size, 0, 0}; - - - { - extern func_ptr __CTOR_END__[]; - func_ptr *p; - - /* The compiler assumes all symbols are 16 byte aligned, which is - * not the case for __CTOR_END__. This inline assembly makes sure - * the address is loaded into a register for which the compiler does - * not assume anything about alignment. */ - __asm__ ("\n" : "=r" (p) : "0" (__CTOR_END__ - 1)); - - for (; *p != (func_ptr) -1; p--) - (*p) (); - } - - exit(main(spu_id, param, env)); - __asm__ volatile ( " stop 0x20ff"); -} - -/* C99 requires _Exit */ -void _Exit(int) __attribute__((__weak__, __alias__("_exit"))); - -void -_exit(int rc) -{ - { - static func_ptr *p = 0; - if (!p) - { - /* See comment for __CTOR_END__ above. */ - __asm__ ("" : "=r" (p) : "0" (__DTOR_LIST__ + 1)); - for (; *p; p++) - (*p) (); - } - } - /* Some self modifying code to return 'rc' in the 'stop' insn. */ - __asm__ volatile ( - " ori $3, %0,0\n" - " lqr $4, 1f\n" - " cbd $5, 1f+3($sp)\n" - " shufb $0, %0, $4, $5\n" - " stqr $0, 1f\n" - " sync\n" - "1:\n" - " stop 0x2000\n" - : : "r" (rc) ); -} - |