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Fixed possible infinite loop: width for redraw_area() cannot be 0.

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This commit is contained in:
Volker Ruppert 2018-02-12 21:07:04 +00:00
parent 6610382b31
commit e14f70088c
1 changed files with 4 additions and 2 deletions
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6
bochs/iodev/display/banshee.cc
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@ -816,7 +816,7 @@ void bx_banshee_c::mem_write_linear(Bit32u offset, Bit32u value, unsigned len)
Bit8u value8;
Bit32u start = v->banshee.io[io_vidDesktopStartAddr];
Bit32u pitch = v->banshee.io[io_vidDesktopOverlayStride] & 0x7fff;
unsigned i, x, y;
unsigned i, w, x, y;
if (offset >= v->fbi.lfb_base) {
offset -= v->fbi.lfb_base;
@ -836,7 +836,9 @@ void bx_banshee_c::mem_write_linear(Bit32u offset, Bit32u value, unsigned len)
offset -= start;
x = (offset % pitch) / (v->banshee.disp_bpp >> 3);
y = offset / pitch;
theVoodooVga->redraw_area(x, y, len / (v->banshee.disp_bpp >> 3), 1);
w = len / (v->banshee.disp_bpp >> 3);
if (w == 0) w = 1;
theVoodooVga->redraw_area(x, y, w, 1);
}
BX_UNLOCK(render_mutex);
}