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revamped 32X draw arm asm code

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This commit is contained in:
kub 2019-03-22 23:02:11 +01:00
parent 064cc6d103
commit 23eef37f25
2 changed files with 26 additions and 22 deletions
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46
pico/32x/draw_arm.s → pico/32x/draw_arm.S
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@ -6,9 +6,10 @@
@* See COPYING file in the top-level directory.
@*
#include "pico/pico_int_o32.h"
.extern Pico32x
.extern PicoDraw2FB
.extern HighPal
.extern Pico
.equiv P32XV_PRI, (1<< 7)
@ -22,11 +23,11 @@ Pico32xNativePal:
.align 2
.macro call_scan_prep cond
.macro call_scan_prep cond est @ &Pico.est
.if \cond
ldr r4, =PicoScan32xBegin
ldr r5, =PicoScan32xEnd
ldr r6, =DrawLineDest
ldr r6, [\est, #OFS_EST_DrawLineDest]
ldr r4, [r4]
ldr r5, [r5]
stmfd sp!, {r4,r5,r6}
@ -70,19 +71,20 @@ Pico32xNativePal:
\name:
stmfd sp!, {r4-r11,lr}
ldr lr,=Pico
ldr r10,=Pico32x
ldr r11,=PicoDraw2FB
ldr r11, [lr, #OFS_Pico_est+OFS_EST_Draw2FB]
ldr r10,[r10, #0x40] @ Pico32x.vdp_regs[0]
ldr r11,[r11]
ldr r9, =HighPal @ palmd
add r9, lr, #OFS_Pico_est+OFS_EST_HighPal @ palmd
and r4, r2, #0xff
mov r5, #328
lsl r3, #26 @ mdbg << 26
mov r3, r3, lsl #26 @ mdbg << 26
mla r11,r4,r5,r11 @ r11 = pmd = PicoDraw2FB + offs*328: md data
tst r10,#P32XV_PRI
moveq r10,#0
movne r10,#0x8000 @ r10 = inv_bit
call_scan_prep \call_scan
call_scan_prep \call_scan lr
mov r4, #0 @ line
b 1f @ loop_outer_entry
@ -139,16 +141,17 @@ Pico32xNativePal:
\name:
stmfd sp!, {r4-r11,lr}
ldr r11,=PicoDraw2FB
ldr lr,=Pico
ldr r10,=Pico32xNativePal
ldr r11,[r11]
ldr r11, [lr, #OFS_Pico_est+OFS_EST_Draw2FB]
ldr r10,[r10]
ldr r9, =HighPal @ palmd
add r9, lr, #OFS_Pico_est+OFS_EST_HighPal @ palmd
and r4, r2, #0xff
mov r5, #328
lsl r3, #26 @ mdbg << 26
mov r3, r3, lsl #26 @ mdbg << 26
mla r11,r4,r5,r11 @ r11 = pmd = PicoDraw2FB + offs*328: md data
call_scan_prep \call_scan
call_scan_prep \call_scan lr
mov r4, #0 @ line
b 1f @ loop_outer_entry
@ -179,8 +182,8 @@ Pico32xNativePal:
ldrneb r8, [r5, #2]! @ r7,r8 - pixel 0,1 index
subs r6, r6, #1
blt 0b @ loop_outer
cmp r7, r8
beq 5f @ check_fill @ +8
@ cmp r7, r8 @ is this really improving things?
@ beq 5f @ check_fill @ +8
3: @ no_fill:
mov r12,r7, lsl #1
@ -297,16 +300,17 @@ Pico32xNativePal:
\name:
stmfd sp!, {r4-r11,lr}
ldr r11,=PicoDraw2FB
ldr lr,=Pico
ldr r10,=Pico32xNativePal
ldr r11,[r11]
ldr r11, [lr, #OFS_Pico_est+OFS_EST_Draw2FB]
ldr r10,[r10]
ldr r9, =HighPal @ palmd
add r9, lr, #OFS_Pico_est+OFS_EST_HighPal @ palmd
and r4, r2, #0xff
mov r5, #328
lsl r3, #26 @ mdbg << 26
mov r3, r3, lsl #26 @ mdbg << 26
mla r11,r4,r5,r11 @ r11 = pmd = PicoDraw2FB + offs*328: md data
call_scan_prep \call_scan
call_scan_prep \call_scan lr
mov r4, #0 @ line
b 1f @ loop_outer_entry