URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [newlib/] [libgloss/] [i960/] [crt0.c] - Diff between revs 39 and 56

Rev 39	Rev 56
Line 18...	Line 18...
`: "d" (mask));`	`: "d" (mask));`
`}`	`}`

`#define STACK_ALIGN 64`	`#define STACK_ALIGN 64`

`__inline static void *`	`__inline static void`
`set_stack (void* ptr)`	`set_stack (void* ptr)`
`{`	`{`
`ptr = (((int)ptr & (STACK_ALIGN-1))==0)`	`ptr = (void *)(((int)ptr + STACK_ALIGN - 1) & ~(STACK_ALIGN - 1));`
`? (void*)((int)ptr & (~(STACK_ALIGN-1)))`	`/* SP must be 64 bytes larger than FP at start. */`
`: (void*)((int)ptr & (~(STACK_ALIGN-1)))+STACK_ALIGN;`
`__asm__ volatile ("mov %0,sp"`	`__asm__ volatile ("mov %0,sp"`
`:`	`:`
`: "d" (ptr));`	`: "d" (ptr+STACK_ALIGN));`
`__asm__ volatile ("mov %0,fp"`	`__asm__ volatile ("mov %0,fp"`
`:`	`:`
`: "d" (ptr));`	`: "d" (ptr));`
`return ptr;`
`}`	`}`

`__inline static void`	`__inline static void`
`init_Cregs (void)`	`init_Cregs (void)`
`{`	`{`
Line 51...	Line 49...
`}`	`}`

`void`	`void`
`_start(void)`	`_start(void)`
`{`	`{`
`void *stack;`
`char *p;`	`char *p;`

`enable_tracing ();`	`enable_tracing ();`
`stack = set_stack (&end + 4096);`	`set_stack (&end);`
`init_Cregs ();`	`init_Cregs ();`
`brk (stack);`	`/* The stack grows upwards, so this makes the heap start after a 256K`
	`stack area. PlumHall known to fail with less than 73K of stack. */`
	`brk (&end+0x40000);`
`/* clear bss */`	`/* clear bss */`
`memset (&bss_start, 0, &end - &bss_start);`	`memset (&bss_start, 0, &end - &bss_start);`
`main(0, 0, 0);`	`main(0, 0, 0);`
`_exit(0);`	`exit(0);`
`}`	`}`

`No newline at end of file`	`No newline at end of file`