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Merge pull request #2099 from bbbradsmith/split2092-sim65-fix

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sim65 fix platform-dependent issues
This commit is contained in:
Bob Andrews 2023-05-06 20:36:59 +02:00 committed by GitHub
commit 7b40515506
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5 changed files with 27 additions and 5 deletions
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13
src/sim65/main.c
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@ -36,6 +36,7 @@
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
/* common */
#include "abend.h"
@ -63,6 +64,12 @@ const char* ProgramFile;
/* exit simulator after MaxCycles Cycles */
unsigned long MaxCycles;
/* maximum number of cycles that can be tested,
** requires overhead for longest possible instruction,
** which should be 7, using 16 for safety.
*/
#define MAXCYCLES_LIMIT (ULONG_MAX-16)
/* Header signature 'sim65' */
static const unsigned char HeaderSignature[] = {
0x73, 0x69, 0x6D, 0x36, 0x35
@ -72,7 +79,6 @@ static const unsigned char HeaderSignature[] = {
static const unsigned char HeaderVersion = 2;
/*****************************************************************************/
/* Code */
/*****************************************************************************/
@ -140,6 +146,10 @@ static void OptQuitXIns (const char* Opt attribute ((unused)),
/* quit after MaxCycles cycles */
{
MaxCycles = strtoul(Arg, NULL, 0);
/* Guard against overflow. */
if (MaxCycles >= MAXCYCLES_LIMIT) {
Error("'-x parameter out of range. Max: %lu",MAXCYCLES_LIMIT);
}
}
static unsigned char ReadProgramFile (void)
@ -184,6 +194,7 @@ static unsigned char ReadProgramFile (void)
}
/* Get load address */
Val2 = 0; /* suppress uninitialized variable warning */
if (((Val = fgetc(F)) == EOF) ||
((Val2 = fgetc(F)) == EOF)) {
Error ("'%s': Header missing load address", ProgramFile);

10
src/sim65/paravirt.c
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@ -242,7 +242,15 @@ static void PVClose (CPURegs* Regs)
Print (stderr, 2, "PVClose ($%04X)\n", FD);
RetVal = close (FD);
if (FD != 0xFFFF) {
RetVal = close (FD);
} else {
/* test/val/constexpr.c "abuses" close, expecting close(-1) to return -1.
** This behaviour is not the same on all target platforms.
** MSVC's close treats it as a fatal error instead and terminates.
*/
RetVal = 0xFFFF;
}
SetAX (Regs, RetVal);
}

3
test/asm/val/Makefile
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@ -22,7 +22,8 @@ ifdef QUIET
NULLERR = 2>$(NULLDEV)
endif
SIM65FLAGS = -x 5000000000
# sim65 can support 64-bit cycle counts on some platforms, but not all. This must fit in 32-bit.
SIM65FLAGS = -x 4000000000
CA65 := $(if $(wildcard ../../../bin/ca65*),..$S..$S..$Sbin$Sca65,ca65)
LD65 := $(if $(wildcard ../../../bin/ld65*),..$S..$S..$Sbin$Sld65,ld65)

3
test/standard/Makefile
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@ -22,7 +22,8 @@ ifdef QUIET
NULLERR = 2>$(NULLDEV)
endif
SIM65FLAGS = -x 5000000000 -c
# sim65 can support 64-bit cycle counts on some platforms, but not all. This must fit in 32-bit.
SIM65FLAGS = -x 4000000000 -c
CC65 := $(if $(wildcard ../../bin/cc65*),..$S..$Sbin$Scc65,cc65)
CA65 := $(if $(wildcard ../../bin/ca65*),..$S..$Sbin$Sca65,ca65)

3
test/val/Makefile
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@ -24,7 +24,8 @@ ifdef QUIET
NULLERR = 2>$(NULLDEV)
endif
SIM65FLAGS = -x 5000000000 -c
# sim65 can support 64-bit cycle counts on some platforms, but not all. This must fit in 32-bit.
SIM65FLAGS = -x 4000000000 -c
CC65 := $(if $(wildcard ../../bin/cc65*),..$S..$Sbin$Scc65,cc65)
CA65 := $(if $(wildcard ../../bin/ca65*),..$S..$Sbin$Sca65,ca65)