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| author | Kartik K. Agaram <vc@akkartik.com> | 2021-06-12 21:43:33 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2021-06-12 21:58:31 -0700 |
| commit | bda6982ba14e1e5c562d86260ad906d9fb29261b (patch) | |
| tree | eae02f7dbff05e1508c398c49f4ae225fd77d4b1 | |
| parent | 242b83ed46c0fa376535c7ef0458df1fe0e28ac0 (diff) | |
| download | mu-bda6982ba14e1e5c562d86260ad906d9fb29261b.tar.gz | |
fix a bounds check
This should have gotten cleaned up during commit e0f6dd5240 (Mar 23).
| -rw-r--r-- | 103grapheme.subx | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/103grapheme.subx b/103grapheme.subx index 269e3c02..8f1f9e61 100644 --- a/103grapheme.subx +++ b/103grapheme.subx @@ -24,13 +24,14 @@ draw-grapheme-on-real-screen: # g: grapheme, x: int, y: int, color: int, backgr 52/push-edx 53/push-ebx 56/push-esi - # var letter-bitmap/esi = font[g] + # esi = g 8b/-> *(ebp+8) 6/r32/esi + # if (g >= 128) return # characters beyond ASCII currently not supported + 81 7/subop/compare %esi 0x80/imm32 + 7d/jump-if->= $draw-grapheme-on-real-screen:end/disp8 + # var letter-bitmap/esi = font[g] 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-real-screen:end/disp8 # var ycurr/edx: int = y*16 8b/-> *(ebp+0x10) 2/r32/edx c1 4/subop/shift-left %edx 4/imm8 |