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libraw2crtc.c: fix error handling

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This commit is contained in:
Thomas Bernard 2019-12-21 21:31:30 +01:00
parent 8e56c368ea
commit 3fefa78412
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GPG Key ID: 0FF11B67A5C0863C
1 changed files with 11 additions and 19 deletions
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30
src/libraw2crtc.c
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@ -15,6 +15,7 @@
#include "struct.h"
#include "loadsave.h"
#include "gfx2log.h"
#include "gfx2mem.h"
/* 6845 registers :
* R1 : Horizontal Displayed : number of character displayed per line (4, 8 or 16 pixels depending on mode)
@ -120,23 +121,21 @@ unsigned char *raw2crtc(T_IO_Context *context, unsigned char mode, unsigned char
}
default:
{
exit(4);
GFX2_Log(GFX2_ERROR, "raw2crtc() mode %d incorrect\n", (int)mode);
return NULL;
}
}
tmpBuffer = (unsigned char*)malloc(0x10000);
tmpBuffer = (unsigned char*)GFX2_malloc(0x10000);
if (tmpBuffer == NULL)
{
fprintf(stderr, "failed to allocate tmpBuffer\n");
exit(4);
}
return NULL;
memset(tmpBuffer, 0, 0x10000);
allocationBuffer = (unsigned char*)malloc(0x10000);
allocationBuffer = (unsigned char*)GFX2_malloc(0x10000);
if(allocationBuffer == NULL)
{
fprintf(stderr, "failed to allocate allocationBuffer\n");
exit(4);
free(tmpBuffer);
return NULL;
}
memset(allocationBuffer, 0, 0x10000);
@ -149,8 +148,6 @@ unsigned char *raw2crtc(T_IO_Context *context, unsigned char mode, unsigned char
for(rcc = 0; rcc <= r9; rcc++)
{
y = vcc*(r9+1) + rcc;
if (vcc > 32)
GFX2_Log(GFX2_DEBUG, "vcc=%u rcc=%u y=%d\n", vcc, rcc, y);
for(hcc = 0; hcc < *r1; hcc++)
{
for(cclk = 0; cclk < 2; cclk++)
@ -185,14 +182,9 @@ unsigned char *raw2crtc(T_IO_Context *context, unsigned char mode, unsigned char
GFX2_Log(GFX2_DEBUG, "raw2crtc() minaddr=%x maxaddr=%x\n", minAddr, maxAddr);
*outSize = (maxAddr + 1) - minAddr;
outBuffer = (unsigned char*)malloc((*outSize));
if (outBuffer == NULL)
{
fprintf(stderr, "failed to allocate outBuffer");
exit(4);
}
memcpy(outBuffer, tmpBuffer + minAddr, *outSize);
outBuffer = (unsigned char*)GFX2_malloc((*outSize));
if (outBuffer != NULL)
memcpy(outBuffer, tmpBuffer + minAddr, *outSize);
free(tmpBuffer);
tmpBuffer = NULL;