diff options
Diffstat (limited to '103grapheme.subx')
-rw-r--r-- | 103grapheme.subx | 35 |
1 files changed, 11 insertions, 24 deletions
diff --git a/103grapheme.subx b/103grapheme.subx index 4364206f..269e3c02 100644 --- a/103grapheme.subx +++ b/103grapheme.subx @@ -18,19 +18,6 @@ draw-grapheme-on-real-screen: # g: grapheme, x: int, y: int, color: int, backgr # . prologue 55/push-ebp 89/<- %ebp 4/r32/esp - # - (draw-grapheme-on-screen-buffer *Video-memory-addr *(ebp+8) *(ebp+0xc) *(ebp+0x10) *(ebp+0x14) *(ebp+0x18)) -$draw-grapheme-on-real-screen:end: - # . epilogue - 89/<- %esp 5/r32/ebp - 5d/pop-to-ebp - c3/return - -# 'buffer' here is not a valid Mu type: a naked address without a length. -draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y: int, color: int, background-color: int - # . prologue - 55/push-ebp - 89/<- %ebp 4/r32/esp # . save registers 50/push-eax 51/push-ecx @@ -38,17 +25,17 @@ draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y: 53/push-ebx 56/push-esi # var letter-bitmap/esi = font[g] - 8b/-> *(ebp+0xc) 6/r32/esi + 8b/-> *(ebp+8) 6/r32/esi c1 4/subop/shift-left %esi 4/imm8 81 0/subop/add %esi Font/imm32 # if (letter-bitmap >= 0x9400) return # characters beyond ASCII currently not supported 81 7/subop/compare %esi 0x9400/imm32 - 7d/jump-if->= $draw-grapheme-on-screen-buffer:end/disp8 + 7d/jump-if->= $draw-grapheme-on-real-screen:end/disp8 # var ycurr/edx: int = y*16 - 8b/-> *(ebp+0x14) 2/r32/edx + 8b/-> *(ebp+0x10) 2/r32/edx c1 4/subop/shift-left %edx 4/imm8 # var ymax/ebx: int = ycurr + 16 - 8b/-> *(ebp+0x14) 3/r32/ebx + 8b/-> *(ebp+0x10) 3/r32/ebx c1 4/subop/shift-left %ebx 4/imm8 81 0/subop/add %ebx 0x10/imm32 { @@ -56,11 +43,11 @@ draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y: 39/compare %edx 3/r32/ebx 7d/jump-if->= break/disp8 # var xcurr/eax: int = x*8 + 7 - 8b/-> *(ebp+0x10) 0/r32/eax # font-width - 1 + 8b/-> *(ebp+0xc) 0/r32/eax # font-width - 1 c1 4/subop/shift-left %eax 3/imm8 05/add-to-eax 7/imm32 # var xmin/ecx: int = x*8 - 8b/-> *(ebp+0x10) 1/r32/ecx + 8b/-> *(ebp+0xc) 1/r32/ecx c1 4/subop/shift-left %ecx 3/imm8 # var row-bitmap/ebx: int = *letter-bitmap 53/push-ebx @@ -74,12 +61,12 @@ draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y: # if LSB, draw a pixel in the given color { 73/jump-if-not-CF break/disp8 - (pixel-on-screen-buffer *(ebp+8) %eax %edx *(ebp+0x18)) - eb/jump $draw-grapheme-on-screen-buffer:continue/disp8 + (pixel-on-real-screen %eax %edx *(ebp+0x14)) + eb/jump $draw-grapheme-on-real-screen:continue/disp8 } # otherwise use the background color - (pixel-on-screen-buffer *(ebp+8) %eax %edx *(ebp+0x1c)) -$draw-grapheme-on-screen-buffer:continue: + (pixel-on-real-screen %eax %edx *(ebp+0x18)) +$draw-grapheme-on-real-screen:continue: # --x 48/decrement-eax # @@ -94,7 +81,7 @@ $draw-grapheme-on-screen-buffer:continue: # eb/jump loop/disp8 } -$draw-grapheme-on-screen-buffer:end: +$draw-grapheme-on-real-screen:end: # . restore registers 5e/pop-to-esi 5b/pop-to-ebx |