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Fixed a bug introduced by recent changes.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4065 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2009-08-28 17:38:24 +00:00
parent 2a2c0fbaf1
commit cd568ef898
1 changed files with 35 additions and 15 deletions
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50
src/cc65/coptstop.c
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@ -52,17 +52,19 @@
/* LoadRegInfo flags set by DirectOp */
#define LI_NONE 0x00
#define LI_DIRECT 0x01 /* Direct op may be used */
#define LI_RELOAD_Y 0x02 /* Reload index register Y */
#define LI_REMOVE 0x04 /* Load may be removed */
typedef enum {
LI_NONE = 0x00,
LI_DIRECT = 0x01, /* Direct op may be used */
LI_RELOAD_Y = 0x02, /* Reload index register Y */
LI_REMOVE = 0x04, /* Load may be removed */
} LI_FLAGS;
/* Structure that tells us how to load the lhs values */
typedef struct LoadRegInfo LoadRegInfo;
struct LoadRegInfo {
int LoadIndex; /* Index of load insn, -1 if invalid */
CodeEntry* LoadEntry; /* The actual entry, 0 if invalid */
unsigned char Flags; /* Tells us how to load */
LI_FLAGS Flags; /* Tells us how to load */
unsigned char Offs; /* Stack offset if data is on stack */
};
@ -453,6 +455,24 @@ static void CheckDirectOp (StackOpData* D)
static void AddStoreA (StackOpData* D)
/* Add a store to zero page after the push insn */
{
CodeEntry* X = NewCodeEntry (OP65_STA, AM65_ZP, D->ZPLo, 0, D->PushEntry->LI);
InsertEntry (D, X, D->PushIndex+1);
}
static void AddStoreX (StackOpData* D)
/* Add a store to zero page after the push insn */
{
CodeEntry* X = NewCodeEntry (OP65_STX, AM65_ZP, D->ZPHi, 0, D->PushEntry->LI);
InsertEntry (D, X, D->PushIndex+1);
}
static void ReplacePushByStore (StackOpData* D)
/* Replace the call to the push subroutine by a store into the zero page
* location (actually, the push is not replaced, because we need it for
@ -460,18 +480,14 @@ static void ReplacePushByStore (StackOpData* D)
* end of each routine).
*/
{
CodeEntry* X;
/* Store the value into the zeropage instead of pushing it. Check high
* byte first so that the store is later in A/X order.
*/
if ((D->Lhs.X.Flags & LI_DIRECT) == 0) {
X = NewCodeEntry (OP65_STX, AM65_ZP, D->ZPHi, 0, D->PushEntry->LI);
InsertEntry (D, X, D->PushIndex+1);
AddStoreX (D);
}
if ((D->Lhs.A.Flags & LI_DIRECT) == 0) {
X = NewCodeEntry (OP65_STA, AM65_ZP, D->ZPLo, 0, D->PushEntry->LI);
InsertEntry (D, X, D->PushIndex+1);
AddStoreA (D);
}
}
@ -661,7 +677,8 @@ static unsigned Opt___bzero (StackOpData* D)
/* Check if we're using a register variable */
if (!IsRegVar (D)) {
/* Store the value into the zeropage instead of pushing it */
ReplacePushByStore (D);
AddStoreX (D);
AddStoreA (D);
}
/* If the return value of __bzero is used, we have to add code to reload
@ -752,7 +769,8 @@ static unsigned Opt_staspidx (StackOpData* D)
/* Check if we're using a register variable */
if (!IsRegVar (D)) {
/* Store the value into the zeropage instead of pushing it */
ReplacePushByStore (D);
AddStoreX (D);
AddStoreA (D);
}
/* Replace the store subroutine call by a direct op */
@ -776,7 +794,8 @@ static unsigned Opt_staxspidx (StackOpData* D)
/* Check if we're using a register variable */
if (!IsRegVar (D)) {
/* Store the value into the zeropage instead of pushing it */
ReplacePushByStore (D);
AddStoreX (D);
AddStoreA (D);
}
/* Inline the store */
@ -854,7 +873,8 @@ static unsigned Opt_tosaddax (StackOpData* D)
int Signed = (strcmp (N->Arg, "ldaidx") == 0);
/* Store the value into the zeropage instead of pushing it */
ReplacePushByStore (D);
AddStoreX (D);
AddStoreA (D);
/* Replace the ldy by a tay. Be sure to create the new entry before
* deleting the ldy, since we will reference the line info from this