| 350,6 → 350,31 |
|---|
| ret |
| endp |
| |
| uglobal |
| sb16_buffer_allocated db 0 |
| endg |
| |
| ; Allocates [.size] bytes so that the target memory block |
| ; is inside one 64K page for 24-bit DMA controller, |
| ; that is, somewhere between 00xx0000h and 00xxFFFFh. |
| proc alloc_dma24 |
| ; Implementation note. |
| ; The only user of that function is SB16 driver, |
| ; so just return a statically allocated buffer. |
| virtual at esp |
| dd ? ; return address |
| .size dd ? |
| end virtual |
| cmp [sb16_buffer_allocated], 0 |
| jnz .fail |
| inc [sb16_buffer_allocated] |
| mov eax, SB16Buffer |
| ret 4 |
| .fail: |
| xor eax, eax |
| ret 4 |
| endp |
| |
| ; Allocates a physical page for master page table |
| ; that duplicates first Mb of OS_BASE at address 0; |
| ; used for starting APs and for shutting down, |