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Diffstat (limited to 'libgloss/cr16/crt1.S')
| -rw-r--r-- | libgloss/cr16/crt1.S | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/libgloss/cr16/crt1.S b/libgloss/cr16/crt1.S deleted file mode 100644 index eee6fc10b..000000000 --- a/libgloss/cr16/crt1.S +++ /dev/null @@ -1,98 +0,0 @@ - ############################################################################## - # crt0.s -- CR16 default start-up routine # - # # - # Copyright (c) 2004 National Semiconductor Corporation # - # # - # The authors hereby grant permission to use, copy, modify, distribute, # - # and license this software and its documentation for any purpose, provided # - # that existing copyright notices are retained in all copies and that this # - # notice is included verbatim in any distributions. No written agreement, # - # license, or royalty fee is required for any of the authorized uses. # - # Modifications to this software may be copyrighted by their authors # - # and need not follow the licensing terms described here, provided that # - # the new terms are clearly indicated on the first page of each file where # - # they apply. # - # # - # This is the start routine of your CR16 program. # - # It is linked with your application automatically. You can use # - # this routine as a template and modify it to your needs, yet this # - # file must be supplied for the compiler. # - # It is assumed that the following symbols are defined in your linker # - # script: __STACK_START, __ISTACK_START # - ############################################################################## - - .text -#ifdef __CR16CP__ - .align 4 -#else - .align 2 -#endif - .global _main - .global _atexit - .global _exit - .global _start - .global __fini - .global __init - .global __STACK_START - .global __ISTACK_START - -_start: - - #----------------------------------------------------------------------------# - # Initialize the stack pointers. The constants __STACK_START and # - # __ISTACK_START should be defined in the linker script. # - - movd $__STACK_START, (sp) - - movd $__ISTACK_START, (r1,r0) - lprd (r1,r0), isp - - #----------------------------------------------------------------------------# - # Initialize the default sections according to the linker script. # - -# bal (ra), __init_bss_data - - #----------------------------------------------------------------------# - # Set the Extended Dispatch bit in the CFG register. This is the # - # default configuration for CR16C. # - - spr cfg, r0 # Set dispatch table width - orw $0x100, r0 - lpr r0, cfg - - #----------------------------------------------------------------------------# - - - #----------------------------------------------------------------------------# - # Handle global and static constructurs execution and setup # - # destructors to be called from exit. # - - bal (ra),__init - movd $__fini@c, (r3,r2) - bal (ra), _atexit - - #----------------------------------------------------------------------------# - # Jump to the main function in your application. # - -#ifdef __INT32__ - movd $0, (r3,r2) # Number of arguments - movd $0, (r5,r4) # conatins pointer to argument string. -#else - movw $0, r2 # Number of arguments - movd $0, (r4,r3) # conatins pointer to argument string. -#endif - bal (ra), _main - - #----------------------------------------------------------------------------# - # Upon returning from the main function (if it isn't an infinite loop), # - # jump to the exit function. The exit function is located in the # - # library 'libc.a'. # - -#ifdef __INT32__ - movd (r1,r0), (r3,r2) # _main return value gets forwarded. -#else - movw r0, r2 # _main return value gets forwarded. -#endif - br _exit # returns control to the functional simulator. - - |