diff options
Diffstat (limited to 'sysdeps/standalone/i960/start.S')
| -rw-r--r-- | sysdeps/standalone/i960/start.S | 148 |
1 files changed, 73 insertions, 75 deletions
diff --git a/sysdeps/standalone/i960/start.S b/sysdeps/standalone/i960/start.S index c14449d3ff..d86fb1440f 100644 --- a/sysdeps/standalone/i960/start.S +++ b/sysdeps/standalone/i960/start.S @@ -1,23 +1,22 @@ -/* Copyright (C) 1994 Free Software Foundation, Inc. +/* Copyright (C) 1994, 1997 Free Software Foundation, Inc. Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), On-Line Applications Research Corporation. - -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. */ + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ /* entry.s * @@ -28,66 +27,66 @@ Cambridge, MA 02139, USA. */ * */ - .text - .globl start # GNU960 default entry point + .text + .globl start # GNU960 default entry point start: - mov 3, r12 - modpc r12, r12, r12 # enable tracing/trace faults - mov g5, g5 # NOP - mov 0, g14 # initialize constant for C - - /* - * zero out uninitialized data area - */ + mov 3, r12 + modpc r12, r12, r12 # enable tracing/trace faults + mov g5, g5 # NOP + mov 0, g14 # initialize constant for C + + /* + * zero out uninitialized data area + */ zerobss: - lda _end, r4 /* find end of .bss */ - lda _bss_start, r5 /* find beginning of .bss */ - ldconst 0, r6 + lda _end, r4 /* find end of .bss */ + lda _bss_start, r5 /* find beginning of .bss */ + ldconst 0, r6 loop: st r6, (r5) /* to zero out uninitialized */ - addo 4, r5, r5 /* data area */ - cmpobl r5, r4, loop /* loop until _end reached */ + addo 4, r5, r5 /* data area */ + cmpobl r5, r4, loop /* loop until _end reached */ - lda heap_memory, r12 /* tell C lib where heap is */ - st r12,___C_heap_start - lda heap_size, r12 /* tell C lib how big heap is */ - st r12,___C_heap_size - lda stack_memory,r12 /* set up stack pointer: */ - mov r12, sp - mov 0, g14 /* initialize constant for C */ + lda heap_memory, r12 /* tell C lib where heap is */ + st r12,___C_heap_start + lda heap_size, r12 /* tell C lib how big heap is */ + st r12,___C_heap_size + lda stack_memory,r12 /* set up stack pointer: */ + mov r12, sp + mov 0, g14 /* initialize constant for C */ - call init_frames - ret /* return to monitor */ + call init_frames + ret /* return to monitor */ init_frames: - ldconst 0x3b001000, g0 - ldconst 0x00009107, g1 - modac g1, g0, g0 /* set AC controls */ - - /* - * Call application mainline. - * Someday, real values of argc and argv will be set up. - * For now, they are set to 0. - */ - - callx __Board_Initialize /* Initialize the board */ - - ldconst 0,g0 - ldconst 0,g1 - ldconst 0,g2 - callx ___libc_init /* initialize the library and */ - /* call main */ - /* - * if we return from main, we have "fallen" off the end - * of the program, therefore status is 0 - * so move 0 to g0 (exit parameter) - */ - - mov 0, g0 - callx __exit - ret + ldconst 0x3b001000, g0 + ldconst 0x00009107, g1 + modac g1, g0, g0 /* set AC controls */ + + /* + * Call application mainline. + * Someday, real values of argc and argv will be set up. + * For now, they are set to 0. + */ + + callx __Board_Initialize /* Initialize the board */ + + ldconst 0,g0 + ldconst 0,g1 + ldconst 0,g2 + callx ___libc_init /* initialize the library and */ + /* call main */ + /* + * if we return from main, we have "fallen" off the end + * of the program, therefore status is 0 + * so move 0 to g0 (exit parameter) + */ + + mov 0, g0 + callx __exit + ret /* @@ -95,13 +94,13 @@ init_frames: */ #define DECLARE_SPACE(_name,_space,_align) \ - .globl _name ; \ - .align _align ; \ + .globl _name ; \ + .align _align ; \ .comm _name##,_space #define DECLARE_LABEL(_name) \ - .globl _name ; \ -_name##: + .globl _name ; \ +_name##: #define DECLARE_PTR(_name) DECLARE_SPACE(_name,4,2) #define DECLARE_U32(_name) DECLARE_SPACE(_name,4,2) @@ -121,7 +120,7 @@ DECLARE_U32(errno) * Stack Size and Space */ - .set stack_size, 0x20000 + .set stack_size, 0x20000 DECLARE_SPACE(stack_memory,stack_size,4) DECLARE_LABEL(stack_end) @@ -130,8 +129,7 @@ DECLARE_LABEL(stack_end) * Heap Size and Space */ - .set heap_size, 0x20000 + .set heap_size, 0x20000 DECLARE_SPACE(heap_memory,heap_size,4) DECLARE_LABEL(heap_end) - |