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git.lizzy.rs Git - plan9front.git/blobdiff - sys/src/boot/pc/e820.s
TEXT e820(SB), $0
MOVL bx+4(SP), BX
MOVL p+8(SP), DI
-
- MOVL $0xe820, AX
+ MOVL $0xE820, AX
MOVL $0x534D4150, DX
CALL rmode16(SB)
LWI(24, rCX)
BIOSCALL(0x15)
JC _bad
CALL16(pmode32(SB))
+ CMPB CL, $24
+ JZ _ret
+ MOVL $1, AX
+ MOVL p+8(SP), DI
+ MOVL AX, 20(DI)
+_ret:
MOVL BX, AX
RET
_bad:
CALL16(pmode32(SB))
XORL AX, AX
+ MOVL p+8(SP), DI
+ MOVL AX, 0(DI)
+ MOVL AX, 4(DI)
+ MOVL AX, 8(DI)
+ MOVL AX, 12(DI)
+ MOVL AX, 16(DI)
+ MOVL AX, 20(DI)
RET