mirror of https://github.com/cc65/cc65.git
63 lines
1.3 KiB
ArmAsm
63 lines
1.3 KiB
ArmAsm
;
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; int cscanf(const char* format, ...);
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;
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; 2000-12-01, Ullrich von Bassewitz
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; 2005-01-01, Greg King
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;
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.export _cscanf
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.import pushax, addysp, _vcscanf
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.macpack generic
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.include "zeropage.inc"
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; ----------------------------------------------------------------------------
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; Code
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;
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_cscanf:
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sty ArgSize ; Number of argument bytes passed in .Y
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dey ; subtract size of format pointer
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dey
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tya
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; Now, calculate the va_list pointer -- which points to format.
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ldx sp+1
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add sp
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bcc @L1
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inx
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@L1: sta ptr1
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stx ptr1+1
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; Push a copy of the format pointer onto the stack.
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ldy #1
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lda (ptr1),y
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tax
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dey
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lda (ptr1),y
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jsr pushax
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; Load va_list [last and __fastcall__ argument for vcscanf()].
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lda ptr1
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ldx ptr1+1
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; Call vcscanf().
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jsr _vcscanf
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; Clean up the stack. We will return what we got from vcscanf().
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ldy ArgSize
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jmp addysp
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; ----------------------------------------------------------------------------
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; Data
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;
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.bss
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ArgSize:
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.res 1 ; Number of argument bytes
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