| /boot/trunk/arch/ppc32/loader/asm.S |
|---|
| 37,11 → 37,75 |
| .text |
| .global halt |
| .global memcpy |
| .global jump_to_kernel |
| halt: |
| b halt |
| memcpy: |
| srwi. r7, r5, 3 |
| addi r6, r3, -4 |
| addi r4, r4, -4 |
| beq 2f |
| andi. r0, r6, 3 |
| mtctr r7 |
| bne 5f |
| 1: |
| lwz r7, 4(r4) |
| lwzu r8, 8(r4) |
| stw r7, 4(r6) |
| stwu r8, 8(r6) |
| bdnz 1b |
| andi. r5, r5, 7 |
| 2: |
| cmplwi 0, r5, 4 |
| blt 3f |
| lwzu r0, 4(r4) |
| addi r5, r5, -4 |
| stwu r0, 4(r6) |
| 3: |
| cmpwi 0, r5, 0 |
| beqlr |
| mtctr r5 |
| addi r4, r4, 3 |
| addi r6, r6, 3 |
| 4: |
| lbzu r0, 1(r4) |
| stbu r0, 1(r6) |
| bdnz 4b |
| blr |
| 5: |
| subfic r0, r0, 4 |
| mtctr r0 |
| 6: |
| lbz r7, 4(r4) |
| addi r4, r4, 1 |
| stb r7, 4(r6) |
| addi r6, r6, 1 |
| bdnz 6b |
| subf r5, r0, r5 |
| rlwinm. r7, r5, 32-3, 3, 31 |
| beq 2b |
| mtctr r7 |
| b 1b |
| jump_to_kernel: |
| # r3 = memmap (pa) |