41 lines
397 B
ArmAsm
41 lines
397 B
ArmAsm
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.set break,17
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.globl _sbrk
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.globl _brk
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.globl _end
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.globl cerror
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_sbrk:
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.word 0x0000
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movl nd,r0
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tstl 4(ap)
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jeql out
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addl3 r0,4(ap),-(sp)
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bcs ovfl
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pushl $1
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movl ap,r3
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movl sp,ap
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chmk $break
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bcc ok
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ovfl:
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jmp cerror
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ok:
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movl nd,r0
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addl2 4(r3),nd
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out:
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ret
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.globl _brk
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_brk:
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.word 0x0000
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chmk $break
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bcc ok2
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jmp cerror
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ok2:
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movl 4(ap),nd
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clrl r0
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ret
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.data
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nd: .long _end
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