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82 lines
1.2 KiB
ArmAsm
82 lines
1.2 KiB
ArmAsm
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; Ullrich von Bassewitz, 11.08.1998
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; char* DbgMemDump (unsigend Addr, char* Buf, unsigned char Length);
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;
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.export _DbgMemDump
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.import addysp1
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.import __hextab
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.importzp sp, tmp2, tmp3, tmp4, ptr3, ptr4
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_DbgMemDump:
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ldy #0
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lda (sp),y ; Get length
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sta tmp4
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iny
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lda (sp),y ; Get the string buffer
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sta ptr3
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iny
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lda (sp),y
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sta ptr3+1
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iny
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lda (sp),y ; Get the address
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sta ptr4
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iny
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lda (sp),y
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sta ptr4+1
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jsr addysp1 ; Drop the parameters
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lda #0
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sta tmp2 ; String index
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sta tmp3 ; Byte index
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; Print the address
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lda ptr4+1 ; Hi address byte
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jsr dump ; Print address
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lda ptr4 ; Lo address byte
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jsr dump
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jsr putspace ; Add a space
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dump1: dec tmp4 ; Bytes left?
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bmi dump9 ; Jump if no
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jsr putspace ; Add a space
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ldy tmp3
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inc tmp3
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lda (ptr4),y
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jsr dump
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jmp dump1
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dump9: lda #0
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ldy tmp2
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sta (ptr3),y ; Add string terminator
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lda ptr3
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ldx ptr3+1 ; We assume this is not zero
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rts
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; Dump one hex byte
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dump: pha
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lsr a
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lsr a
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lsr a
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lsr a
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tax
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lda __hextab,x
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jsr putc
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pla
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and #$0F
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tax
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lda __hextab,x
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putc: ldy tmp2
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inc tmp2
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sta (ptr3),y
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rts
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putspace:
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lda #$20
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bne putc
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