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

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [reset.S] - Diff between revs 463 and 467

Go to most recent revision | Show entire file | Details | Blame | View Log

Rev 463	Rev 467
Line 4...	Line 4...
`#define TRAP_ON_ERROR 0`	`#define TRAP_ON_ERROR 0`
`#define LOOP_ON_ERROR 0`	`#define LOOP_ON_ERROR 0`
`#define EXIT_NOP_ON_ERROR 1`	`#define EXIT_NOP_ON_ERROR 1`
`#define PRINT_AND_RESET_ON_ERROR 1`	`#define PRINT_AND_RESET_ON_ERROR 1`

`.extern _src_beg`
`.extern _dst_beg`
`.extern _dst_end`
`.extern int_main`	`.extern int_main`
`.extern int_error`	`.extern int_error`
`.extern tick_interrupt`
`.extern _crc32`
`.extern _bstart`	`.extern _bstart`
`.extern _bend`	`.extern _bend`
`.global _calc_mycrc32`
`.global _mycrc32`
`.global _mysize`

`.section .stack, "aw", @nobits`	`.section .stack, "aw", @nobits`
`.space STACK_SIZE`	`.space STACK_SIZE`
`_stack:`	`_stack:`
`.section .crc`
`_mycrc32:`
`.word 0xcccccccc`
`_mysize:`
`.word 0xdddddddd`

`.if SELF_CHECK`
`_calc_mycrc32:`
`l.addi r3,r0,0`
`l.movhi r4,hi(_calc_mycrc32)`
`l.ori r4,r4,lo(_calc_mycrc32)`
`l.movhi r5,hi(_mysize)`
`l.ori r5,r5,lo(_mysize)`
`l.lwz r5,0(r5)`
`l.addi r1,r1,-4`
`l.sw 0(r1),r9`

`/* unsigned long crc32 (unsigned long crc, const unsigned char buf, unsigned long len); /`
`l.jal _crc32`
`l.nop`

`l.movhi r3,hi(_mycrc32)`
`l.ori r3,r3,lo(_mycrc32)`
`l.lwz r3,0(r3)`

`l.xor r11,r3,r11`
`l.lwz r9,0(r1)`
`l.jr r9`
`l.addi r1,r1,4`
`.endif`

`.org 0x100`

`.section .vectors, "ax"`	`.section .vectors, "ax"`

	`.org 0x100`
`_reset:`	`_reset:`
`l.movhi r0, 0`	`l.movhi r0, 0`
`/* Clear status register, set supervisor mode */`	`/* Clear status register, set supervisor mode */`
`l.ori r1, r0, SPR_SR_SM`	`l.ori r1, r0, SPR_SR_SM`
`l.mtspr r0, r1, SPR_SR`	`l.mtspr r0, r1, SPR_SR`
Line 272...	Line 234...
`/* Set up stack */`	`/* Set up stack */`
`l.movhi r1,hi(_stack-4)`	`l.movhi r1,hi(_stack-4)`
`l.ori r1,r1,lo(_stack-4)`	`l.ori r1,r1,lo(_stack-4)`
`l.addi r2,r0,-3`	`l.addi r2,r0,-3`
`l.and r1,r1,r2`	`l.and r1,r1,r2`
	`l.or r2,r1,r1`

`/* Clear BSS */`	`/* Clear BSS */`
`l.movhi r3, hi(_bstart)`	`l.movhi r3, hi(_bstart)`
`l.ori r3, r3, lo(_bstart)`	`l.ori r3, r3, lo(_bstart)`
`l.movhi r4, hi(_bend)`	`l.movhi r4, hi(_bend)`

Browse

Tools

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [reset.S] - Diff between revs 463 and 467