64 lines
901 B
ArmAsm
64 lines
901 B
ArmAsm
.globl ___Get_PC, ___Set_PC
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! $Header$
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! This is the machine-dependant part of the ACK debugger support.
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! ___Get_PC takes a frame pointer (local base) argument and returns the
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! return address from this frame.
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! ___Set_PC takes a frame pointer (local base) argument plus a return
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! address and sets the return address of this frame to the
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! return address supplied.
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___Get_PC:
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ld [%l0],%o0
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tst %o0
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beq 3f
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nop
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cmp %o0,%l1
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bne 1f
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nop
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add %i7, 8, %o0
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3:
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retl
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nop
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1:
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ta 3
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add %l1,%g0,%o1
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2: add %o1,7,%o2
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andn %o2,7,%o2
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ld [%o2+4],%o1
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cmp %o0,%o1
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bne 2b
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nop
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ld [%o2+0x3c],%o0
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inc 8,%o0
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retl
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nop
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___Set_PC:
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ld [%l0],%o0
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tst %o0
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beq 3f
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nop
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cmp %o0,%l1
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bne 1f
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nop
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ld [%l0+4],%i7
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dec 8,%i7
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3:
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retl
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nop
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1:
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ta 3
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add %l1,%g0,%o1
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2: add %o1,7,%o2
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andn %o2,7,%o2
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ld [%o2+4],%o1
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cmp %o0,%o1
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bne 2b
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nop
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ld [%l0+4],%o0
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dec 8,%o0
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st %o0,[%o2+0x3c]
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retl
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nop
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