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* gencode.c (process_instructions): Generate word64 and uword64 

instead of `long long' and `unsigned long long' data types.
	* interp.c:  #include sysdep.h to get signals, and define default
	for SIGBUS.
	* (Convert):  Work around for Visual-C++ compiler bug with type
	conversion.
	* support.h:  Make things compile under Visual-C++ by using
	__int64 instead of `long long'.  Change many refs to long long
	into word64/uword64 typedefs.
This commit is contained in:
Stu Grossman 1996-07-18 01:21:16 +00:00
parent 2ba0d82d52
commit 4fa14cf71c
2 changed files with 22 additions and 13 deletions
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18
sim/mips/gencode.c
View File

@ -1017,13 +1017,17 @@ process_instructions(doarch,features)
case ADD:
case SUB:
{
char *basetype = "unknown";
char *signed_basetype = "unknown";
char *unsigned_basetype = "unknown";
switch (GETDATASIZE()) {
case WORD :
basetype = "int";
signed_basetype = "signed int";
unsigned_basetype = "unsigned int";
break;
case DOUBLEWORD :
basetype = "long long";
signed_basetype = "word64";
unsigned_basetype = "uword64";
break;
default :
fprintf(stderr,"Opcode table error: size of ADD/SUB operands not known (%d)\n",GETDATASIZE());
@ -1031,8 +1035,8 @@ process_instructions(doarch,features)
}
if ((MIPS_DECODE[loop].type) == ADD) {
printf(" unsigned %s temp = (unsigned %s)(op1 + op2);\n",basetype,basetype);
printf(" signed %s tempS = (signed %s)temp;\n",basetype,basetype);
printf(" %s temp = (%s)(op1 + op2);\n", unsigned_basetype, unsigned_basetype);
printf(" %s tempS = (%s)temp;\n", signed_basetype, signed_basetype);
if (MIPS_DECODE[loop].flags & OVERFLOW) {
printf(" if (((op1 < 0) == (op2 < 0)) && ((tempS < 0) != (op1 < 0)))\n");
printf(" SignalException(IntegerOverflow);\n");
@ -1043,8 +1047,8 @@ process_instructions(doarch,features)
else /* only sign-extend when placing 32bit result in 64bit processor */
printf(" GPR[destreg] = SIGNEXTEND(((%s)temp),32);\n",regtype);
} else { /* SUB */
printf(" unsigned %s temp = (unsigned %s)(op1 - op2);\n",basetype,basetype);
printf(" signed %s tempS = (signed %s)temp;\n",basetype,basetype);
printf(" %s temp = (%s)(op1 - op2);\n", unsigned_basetype, unsigned_basetype);
printf(" %s tempS = (%s)temp;\n", signed_basetype, signed_basetype);
if (MIPS_DECODE[loop].flags & OVERFLOW) { /* different signs => overflow if result_sign != arg_sign */
printf(" if (((op1 < 0) != (op2 < 0)) && ((tempS < 0) == (op1 < 0)))\n");
printf(" SignalException(IntegerOverflow);\n");

17
sim/mips/support.h
View File

@ -30,10 +30,15 @@
architectures if desired. */
/* Control via a build boolean for the moment */
#if defined(__GNUC__)
#if defined(__GNUC__) || defined(__WIN32__)
#ifdef __WIN32__
typedef signed __int64 word64;
typedef unsigned __int64 uword64;
#else
typedef long long word64;
typedef unsigned long long uword64;
#endif
#define WORD64LO(t) (unsigned int)((t)&0xFFFFFFFF)
#define WORD64HI(t) (unsigned int)(((uword64)(t))>>32)
@ -43,13 +48,13 @@ typedef unsigned long long uword64;
/* Sign-extend the given value (e) as a value (b) bits long. We cannot
assume the HI32bits of the operand are zero, so we must perform a
mask to ensure we can use the simple subtraction to sign-extend. */
#define SIGNEXTEND(e,b) (((e) & ((unsigned long long)1 << ((b) - 1))) ? (((e) & (((unsigned long long)1 << (b)) - 1)) - ((unsigned long long)1 << (b))) : (e))
#define SIGNEXTEND(e,b) (((e) & ((uword64)1 << ((b) - 1))) ? (((e) & (((uword64)1 << (b)) - 1)) - ((uword64)1 << (b))) : (e))
/* Check if a value will fit within a word (unsigned int): */
#define NOTWORDVALUE(v) ((((((unsigned long long)(v)>>32) == 0) && !((v) & ((unsigned)1 << 31))) || ((((unsigned long long)(v)>>32) == 0xFFFFFFFF) && ((v) & ((unsigned)1 << 31)))) ? (1 == 0) : (1 == 1))
#define NOTWORDVALUE(v) ((((((uword64)(v)>>32) == 0) && !((v) & ((unsigned)1 << 31))) || ((((uword64)(v)>>32) == 0xFFFFFFFF) && ((v) & ((unsigned)1 << 31)))) ? (1 == 0) : (1 == 1))
/* Check if a value will fit within a halfword: */
#define NOTHALFWORDVALUE(v) ((((((unsigned long long)(v)>>16) == 0) && !((v) & ((unsigned)1 << 15))) || (((((unsigned long long)(v)>>32) == 0xFFFFFFFF) && ((((unsigned long long)(v)>>16) & 0xFFFF) == 0xFFFF)) && ((v) & ((unsigned)1 << 15)))) ? (1 == 0) : (1 == 1))
#define NOTHALFWORDVALUE(v) ((((((uword64)(v)>>16) == 0) && !((v) & ((unsigned)1 << 15))) || (((((uword64)(v)>>32) == 0xFFFFFFFF) && ((((uword64)(v)>>16) & 0xFFFF) == 0xFFFF)) && ((v) & ((unsigned)1 << 15)))) ? (1 == 0) : (1 == 1))
/* The following should be executed once at the start of day in the
main emulator control function. The simulator assumes char is
@ -57,8 +62,8 @@ typedef unsigned long long uword64;
#define CHECKSIM() {\
if (sizeof(int) != (4 * sizeof(char)))\
SignalException(SimulatorFault,"sizeof(int) != 4");\
if (sizeof(long long) != (8 * sizeof(char)))\
SignalException(SimulatorFault,"sizeof(long long) != 8");\
if (sizeof(word64) != (8 * sizeof(char)))\
SignalException(SimulatorFault,"sizeof(word64) != 8");\
}
#else /* non-GCC build */