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make float X= const work, and a test for that

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This commit is contained in:
mrdudz 2023-08-31 05:04:02 +02:00
parent 26a3aa9fb7
commit abe65d524d
3 changed files with 100 additions and 14 deletions
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9
src/cc65/assignment.c
View File

@ -809,20 +809,11 @@ void OpAddSubAssign (const GenDesc* Gen, ExprDesc *Expr, const char* Op)
/* Value on the stack */
if (IsClassFloat (Expr->Type)) {
LOG(("OpAddSubAssign '%s' stack, float\n", Op));
#if 0
/* FIXME: what triggers this? */
if (Gen->Tok == TOK_PLUS_ASSIGN) {
g_addeqlocal (lflags, Expr->IVal, FP_D_As32bitRaw(Expr2.V.FVal));
} else {
g_subeqlocal (lflags, Expr->IVal, FP_D_As32bitRaw(Expr2.V.FVal));
}
#else
if (Gen->Tok == TOK_PLUS_ASSIGN) {
g_addeqlocal (lflags, Expr->IVal, Expr2.IVal);
} else {
g_subeqlocal (lflags, Expr->IVal, Expr2.IVal);
}
#endif
} else {
LOG(("OpAddSubAssign '%s' stack, int\n", Op));
if (Gen->Tok == TOK_PLUS_ASSIGN) {

47
src/cc65/codegen.c
View File

@ -31,7 +31,7 @@
/* */
/*****************************************************************************/
//#define DEBUG
#include <inttypes.h>
#include <limits.h>
@ -39,8 +39,6 @@
#include <string.h>
#include <stdarg.h>
//#define DEBUG
/* common */
#include "addrsize.h"
#include "attrib.h"
@ -2095,6 +2093,27 @@ void g_addeqlocal (unsigned flags, int Offs, unsigned long val)
AddCodeLine ("jsr laddeqysp");
break;
case CF_FLOAT:
if (flags & CF_CONST) {
ASMLOG(("nop ; g_addeqlocal float const")); // FIXME: remove
g_getimmed (flags, val, 0);
}
ASMLOG(("nop ; g_addeqlocal float (Offs:%08x Val:%08x)", Offs, val)); // FIXME: remove
// value to add is in primary (a/x/sreg/sgreg+1)
AddCodeLine ("jsr pusheax");
// variable to add to is at sp+y
AddCodeLine ("ldy #$%02X", Offs+4+3);
AddCodeLine ("jsr ldeaxysp");
AddCodeLine ("jsr ftosaddeax");
// result is in primary
// store primary to stack offset
AddCodeLine ("ldy #$%02X", Offs);
AddCodeLine ("jsr steaxysp");
break;
default:
typeerror (flags);
}
@ -2308,6 +2327,28 @@ void g_subeqlocal (unsigned flags, int Offs, unsigned long val)
AddCodeLine ("jsr lsubeqysp");
break;
case CF_FLOAT:
// variable to add to is at sp+y
if (flags & CF_CONST) {
ASMLOG(("nop ; g_subeqlocal float const")); // FIXME: remove
g_getimmed (flags, val, 0);
}
ASMLOG(("nop ; g_subeqlocal float (Offs:%08x Val:%08x)", Offs, val)); // FIXME: remove
// value to add is in primary (a/x/sreg/sgreg+1)
AddCodeLine ("jsr pusheax");
AddCodeLine ("ldy #$%02X", Offs+4+3);
AddCodeLine ("jsr ldeaxysp");
AddCodeLine ("jsr ftosrsubeax");
// result is in primary
// store primary to stack offset
AddCodeLine ("ldy #$%02X", Offs);
AddCodeLine ("jsr steaxysp");
break;
default:
typeerror (flags);
}

58
test/val/float-basic-var-const.c
View File

@ -55,6 +55,7 @@ void test1(float f, char *str)
}
}
#if 1
void varconst(void)
{
printf("\n*** variable vs constant\n\n");
@ -138,18 +139,71 @@ void varconst2(void)
printf(" fp1:0x%08lx [0x41500000] %s (exp:13.0)", *((uint32_t*)&fp1), _ftostr(buf, fp1));
test1(fp1, "41500000");
}
#endif
void varconst3(void)
{
float localfp3;
float localfp2;
float localfp1;
float localfp4;
float localfp5;
printf("\n*** local variable vs constant\n\n");
#if 1 // compiles, wrong result
/* addition, variable + constant */
localfp1 = 64.75f;
localfp1 += 2.25f;
printf("addition: %s+%s=%s\n", _ftostr(buf, 64.75f), _ftostr(buf3, 2.25f), _ftostr(buf2, localfp1));
printf(" localfp1:0x%08lx [0x42860000] %s (exp:67.0)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "42860000");
#endif
#if 1 // compiles, wrong result
/* subtraction, variable - constant */
localfp1 = 16.25f;
localfp1 -= 8.5f;
printf("substraction: %s-%s=%s\n", _ftostr(buf, 16.25f), _ftostr(buf2, 8.5f), _ftostr(buf3, localfp1));
printf(" localfp1:0x%08lx [0x40f80000] %s (exp:7.75)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "40f80000");
localfp1 = 0.3f;
localfp1 -= 0.1f;
printf("localfp1:0x%08lx [0x3e4cccce] %s (0.2)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "3e4cccce");
localfp1 = 0.1f;
localfp1 -= 0.3f;
printf("localfp1:0x%08lx [0xbe4cccce] %s (-0.2)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "be4cccce");
#endif
#if 1
/* multiplication, variable * constant */
localfp1 = 16.25f;
localfp1 *= 2.5f;
printf("multiplication: %s*%s=%s\n", _ftostr(buf, 16.25f), _ftostr(buf2, 2.5f), _ftostr(buf3, localfp1));
printf(" localfp1:0x%08lx [0x42228000] %s (exp:40.625)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "42228000");
/* division, variable / constant */
localfp1 = 32.5f;
localfp1 /= 2.5f;
printf("division: %s/%s=%s\n", _ftostr(buf, 32.5f), _ftostr(buf2, 2.5f), _ftostr(buf3, localfp1));
printf(" localfp1:0x%08lx [0x41500000] %s (exp:13.0)", *((uint32_t*)&localfp1), _ftostr(buf, localfp1));
test1(localfp1, "41500000");
#endif
}
int main(void)
{
float fp2 = 43.21f;
printf("float-basic-var-const\n");
printf("fp1:0x%08lx [0x414570a4] %s (12.340000)\n", *((uint32_t*)&fp1), _ftostr(buf, fp1));
printf("fp2:0x%08lx [0x422cd70a] %s (43.209999)\n", *((uint32_t*)&fp2), _ftostr(buf, fp2));
varconst();
varconst2();
varconst3();
WAIT();
printf("\nfloat-basic-var-const (res:%d)\n", result);