; Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
; See https://llvm.org/LICENSE.txt for license information.
; SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
;
; iigsToolboxExtra.s — hand-written toolbox wrappers that don't fit the
; standard genToolbox.py shape and therefore aren't auto-generated.
; Anything in this file is preserved across regenerations of
; iigsToolbox.s.
;
; Keep it small.  Each wrapper should justify its custom existence in
; the leading comment block (typically: struct-returning toolbox call
; whose Pascal-on-stack result needs explicit memcpy into a caller
; buffer).

	.text

; iigsReadTimeHex(unsigned char *buf8) -> void
; tool 0x0D03, set 0x03 (MiscTools).  Returns 8 bytes of broken-down
; time via a stack-allocated result area: second, minute, hour, (pad),
; year-1900, day, month, weekday.  ORCA's misctool.h declares this as
; returning a TimeRec struct, so genToolbox.py skips it (no inline()
; macro on the prototype).  We expose a C-friendly wrapper that copies
; the 8 bytes into a caller-provided buffer.
;
; ABI: arg0 (the destination pointer) arrives in A/X (lo word in A,
; hi word in X), matching the LLVM W65816 first-arg-in-AX convention.
; We stash A/X to DP $E0..$E3 to form a 32-bit pointer and use
; sta [dp],y (DP-indirect-long-Y) so writes reach the buffer's bank.
	.section .text.iigsReadTimeHex,"ax"
	.globl iigsReadTimeHex
iigsReadTimeHex:
	; --- stash arg0 (destination pointer) at DP $E0..$E3 ---
	sta 0xE0                ; A -> $E0:$E1 (lo16 of pointer)
	stx 0xE2                ; X -> $E2:$E3 (hi16; only $E2 = bank used)
	; --- 8-byte result space (4 words) ---
	pea 0
	pea 0
	pea 0
	pea 0
	ldx #0x0D03
	jsl 0xe10000
	; --- copy 8 bytes from stack into the caller's buffer ---
	; PLA at M=16 pops the 4 result words in reverse push order, which
	; is the same order as the TimeRec layout (lowest-addr word first).
	ldy #0
	pla
	sta [0xE0], y           ; bytes 0,1: second, minute
	iny
	iny
	pla
	sta [0xE0], y           ; bytes 2,3: hour, pad
	iny
	iny
	pla
	sta [0xE0], y           ; bytes 4,5: year-1900, day
	iny
	iny
	pla
	sta [0xE0], y           ; bytes 6,7: month, weekday
	rtl