URL https://opencores.org/ocsvn/or1k_old/or1k_old/trunk

Subversion Repositories or1k_old

[/] [or1k_old/] [trunk/] [newlib/] [libgloss/] [mn10300/] [crt0.S] - Diff between revs 39 and 56

Rev 39	Rev 56
Line 23...	Line 23...

`.file "crt0.S"`	`.file "crt0.S"`

`##------------------------------------------------------------------------------`	`##------------------------------------------------------------------------------`
`## Startup code`	`## Startup code`
`#ifdef __mn10300__`
`.section .text`	`.section .text`
`.global _start`	`.global _start`
`_start:`	`_start:`
`mov _stack-8,a0 # Load up the stack pointer`	`mov _stack-8,a0 # Load up the stack pointer`
`mov a0,sp`	`mov a0,sp`
Line 53...	Line 52...
`mov d0,(4,sp)`	`mov d0,(4,sp)`
`call _main,[],0 # Call main program`	`call _main,[],0 # Call main program`
`call _exit,[],0 # All done, no need to return or`	`call _exit,[],0 # All done, no need to return or`
`# deallocate our stack.`	`# deallocate our stack.`

`.section ._stack`	`.section .stack`
`_stack: .long 1`	`_stack: .long 1`
`#else`
`.section .text`
`.global _start`
`_start:`
`mov _stack-4,a3 # Load up the stack pointer and allocate`
`# our current frame.`

`mov _edata,a0 # Get the start/end of bss`
`mov _end,a1`

`cmp a0,a1 # If no bss, then do nothing`
`beqx .L0`

`sub d0,d0 # clear d0`

`.L1:`
`movb d0,(a0) # Clear a byte and bump pointer`
`add 1,a0`
`cmp a0,a1`
`bnex .L1`

`.L0:`
`jsr ___main`
`sub d0,d0`
`mov d0,d1`
`mov d0,(a3)`
`jsr _main # Call main program`
`jmp _exit # All done, no need to return or`
`# deallocate our stack.`

`.section ._stack`
`_stack: .long 1`
`#endif`