6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2025-01-27 09:33:42 +00:00
Code Issues Projects Releases Wiki Activity

Working on the backend

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@771 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2001-06-04 12:27:16 +00:00
parent c1da7b8859
commit fe2cd767b2
9 changed files with 38 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/cc65/codegen.c
View File

@ -944,7 +944,7 @@ void g_putlocal (unsigned Flags, int Offs, long Val)
{
Offs -= oursp;
CheckLocalOffs (Offs);
if (Flags & CF_CONST) {
g_getimmed (Flags, Val, Offs);
}
@ -960,7 +960,7 @@ void g_putlocal (unsigned Flags, int Offs, long Val)
break;
case CF_LONG:
AddCode (OPC_STAEAX, AM_STACK, WordToStr (Offs), 0);
AddCode (OPC_STEAX, AM_STACK, WordToStr (Offs), 0);
break;
default:

14
src/cc65/codegen.h
View File

@ -294,20 +294,6 @@ void g_addstatic (unsigned flags, unsigned long label, unsigned offs);
/*****************************************************************************/
/* Compares of ax with a variable with fixed address */
/*****************************************************************************/
void g_cmplocal (unsigned flags, int offs);
/* Compare a local variable to ax */
void g_cmpstatic (unsigned flags, unsigned label, unsigned offs);
/* Compare a static variable to ax */
/*****************************************************************************/
/* Special op= functions */
/*****************************************************************************/

4
src/cc65/codeinfo.c
View File

@ -296,7 +296,7 @@ static unsigned char GetRegInfo2 (CodeSeg* S,
}
/* If the instruction is an RTS or RTI, we're done */
if (E->OPC == OP65_RTS || E->OPC == OP65_RTI) {
if ((E->Info & OF_RET) != 0) {
break;
}
@ -336,7 +336,7 @@ static unsigned char GetRegInfo2 (CodeSeg* S,
}
if (Index < 0) {
Index = CS_GetEntryIndex (S, E);
}
}
if ((E = CS_GetEntry (S, ++Index)) == 0) {
Internal ("GetRegInfo2: No next entry!");
}

4
src/cc65/codeseg.c
View File

@ -402,7 +402,7 @@ CodeSeg* NewCodeSeg (const char* SegName, SymEntry* Func)
void CS_AddEntry (CodeSeg* S, struct CodeEntry* E, LineInfo* LI)
void CS_AddEntry (CodeSeg* S, struct CodeEntry* E)
/* Add an entry to the given code segment */
{
/* Transfer the labels if we have any */
@ -465,7 +465,7 @@ void CS_AddLine (CodeSeg* S, LineInfo* LI, const char* Format, va_list ap)
/* If we have a code entry, transfer the labels and insert it */
if (E) {
CS_AddEntry (S, E, LI);
CS_AddEntry (S, E);
}
}

2
src/cc65/codeseg.h
View File

@ -94,7 +94,7 @@ struct CodeSeg {
CodeSeg* NewCodeSeg (const char* SegName, SymEntry* Func);
/* Create a new code segment, initialize and return it */
void CS_AddEntry (CodeSeg* S, struct CodeEntry* E, LineInfo* LI);
void CS_AddEntry (CodeSeg* S, struct CodeEntry* E);
/* Add an entry to the given code segment */
void CS_AddLine (CodeSeg* S, LineInfo* LI, const char* Format, va_list ap) attribute ((format(printf,3,0)));

37
src/cc65/opcodes.c
View File

@ -60,105 +60,112 @@ const OPCDesc OPCTable[OPCODE_COUNT] = {
/* Opcodes for the virtual stack machine */
{ OPC_CALL, /* opcode */
"call", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_NONE, /* chg */
OF_CPU_VM | OF_CALL /* flags */
},
{ OPC_ENTER, /* opcode */
"enter", /* mnemonic */
0, /* size */
1, /* size */
REG_Y, /* use */
REG_AXY, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_JMP, /* opcode */
"jump", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_NONE, /* chg */
OF_CPU_VM | OF_UBRA /* flags */
},
{ OPC_LDA, /* opcode */
"lda", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_A, /* chg */
OF_CPU_VM | OF_LOAD /* flags */
},
{ OPC_LDAX, /* opcode */
"ldax", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_AX, /* chg */
OF_CPU_VM | OF_LOAD /* flags */
},
{ OPC_LDEAX, /* opcode */
"ldeax", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_EAX, /* chg */
OF_CPU_VM | OF_LOAD /* flags */
},
{ OPC_LEA, /* opcode */
"lea", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_AX, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_LEAVE, /* opcode */
"leave", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_PHA, /* opcode */
"pha", /* mnemonic */
0, /* size */
1, /* size */
REG_A, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_PHAX, /* opcode */
"phax", /* mnemonic */
0, /* size */
1, /* size */
REG_AX, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_PHEAX, /* opcode */
"pheax", /* mnemonic */
0, /* size */
1, /* size */
REG_EAX, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_RET, /* opcode */
"ret", /* mnemonic */
1, /* size */
REG_NONE, /* use */
REG_NONE, /* chg */
OF_CPU_VM | OF_RET /* flags */
},
{ OPC_SPACE, /* opcode */
"space", /* mnemonic */
0, /* size */
1, /* size */
REG_NONE, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_STA, /* opcode */
"sta", /* mnemonic */
0, /* size */
1, /* size */
REG_A, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_STAX, /* opcode */
"stax", /* mnemonic */
0, /* size */
1, /* size */
REG_AX, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */
},
{ OPC_STEAX, /* opcode */
"steax", /* mnemonic */
0, /* size */
1, /* size */
REG_EAX, /* use */
REG_NONE, /* chg */
OF_CPU_VM /* flags */

1
src/cc65/opcodes.h
View File

@ -64,6 +64,7 @@ typedef enum {
OPC_PHA,
OPC_PHAX,
OPC_PHEAX,
OPC_RET,
OPC_SPACE,
OPC_STA,
OPC_STAX,

5
src/cc65/segments.c
View File

@ -44,6 +44,7 @@
#include "xmalloc.h"
/* cc65 */
#include "codeent.h"
#include "codeseg.h"
#include "dataseg.h"
#include "textseg.h"
@ -219,11 +220,11 @@ void AddCodeLine (const char* Format, ...)
void AddCode (struct CodeEntry* E)
void AddCode (opc_t OPC, am_t AM, const char* Arg, struct CodeLabel* JumpTo)
/* Add a code entry to the current code segment */
{
CHECK (CS != 0);
CS_AddEntry (CS->Code, E, CurTok.LI);
CS_AddEntry (CS->Code, NewCodeEntry (OPC, AM, Arg, JumpTo, CurTok.LI));
}

7
src/cc65/segments.h
View File

@ -43,6 +43,8 @@
/* common */
#include "attrib.h"
/* cc65 */
#include "opcodes.h"
/*****************************************************************************/
@ -50,8 +52,9 @@
/*****************************************************************************/
struct CodeEntry;
struct CodeLabel;
struct CodeSeg;
struct DataSeg;
struct TextSeg;
@ -123,7 +126,7 @@ void AddTextLine (const char* Format, ...) attribute ((format (printf, 1, 2)));
void AddCodeLine (const char* Format, ...) attribute ((format (printf, 1, 2)));
/* Add a line of code to the current code segment */
void AddCode (struct CodeEntry* E);
void AddCode (opc_t OPC, am_t AM, const char* Arg, struct CodeLabel* JumpTo);
/* Add a code entry to the current code segment */
void AddDataLine (const char* Format, ...) attribute ((format (printf, 1, 2)));