-////////////////////////////////////////////////////////////////////////////////////////////////////
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+//
+// RMAC - Renamed Macro Assembler for all Atari computers
// SECT.H - Code Generation, Fixups and Section Management
-// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2021 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
-// Source Utilised with the Kind Permission of Landon Dyer
+// Source utilized with the kind permission of Landon Dyer
+//
#ifndef __SECT_H__
#define __SECT_H__
#include "rmac.h"
+#include "riscasm.h"
+
+// Macros to deposit code in the current section (in Big Endian)
+#define D_byte(b) {chcheck(1);*chptr++=(uint8_t)(b); sloc++; ch_size++; \
+ if(orgactive) orgaddr++;}
+#define D_word(w) {chcheck(2);*chptr++=(uint8_t)((w)>>8); \
+ *chptr++=(uint8_t)(w); \
+ sloc += 2; ch_size += 2; if(orgactive) orgaddr += 2;}
+#define D_long(lw) {chcheck(4);*chptr++=(uint8_t)((lw)>>24); \
+ *chptr++=(uint8_t)((lw)>>16);\
+ *chptr++=(uint8_t)((lw)>>8); \
+ *chptr++=(uint8_t)(lw); \
+ sloc += 4; ch_size += 4; if(orgactive) orgaddr += 4;}
+#define D_quad(qw) {chcheck(8);*chptr++=(uint8_t)((qw)>>56); \
+ *chptr++=(uint8_t)((qw)>>48);\
+ *chptr++=(uint8_t)((qw)>>40);\
+ *chptr++=(uint8_t)((qw)>>32);\
+ *chptr++=(uint8_t)((qw)>>24);\
+ *chptr++=(uint8_t)((qw)>>16);\
+ *chptr++=(uint8_t)((qw)>>8); \
+ *chptr++=(uint8_t)(qw); \
+ sloc += 8; ch_size += 8; if(orgactive) orgaddr += 8;}
-// Macros to deposit code in the current section
// D_rword deposits a "6502" format (low, high) word (01).
-// D_rlong deposits a MWC "canonical byte order" longword (2301).
-#define D_byte(b) {*chptr++=(char)b; ++sloc; ++ch_size; if(orgactive) ++orgaddr;}
-#define D_word(w) {chcheck(2);*chptr++=(char)(w>>8); *chptr++=(char)w; \
- sloc+=2; ch_size+=2; if(orgactive) orgaddr += 2;}
-#define D_long(lw) {*chptr++=(char)(lw>>24); *chptr++=(char)(lw>>16);\
- *chptr++=(char)(lw>>8); *chptr++=(char)lw; \
- sloc+=4; ch_size += 4; if(orgactive) orgaddr += 4;}
-#define D_rword(w) {*chptr++=(char)w; *chptr++=(char)(w>>8); \
- sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;}
-#define D_rlong(lw) {*chptr++=(char)(lw>>16);*chptr++=(char)(lw>>24);\
- *chptr++=(char)lw;*chptr++=(char)(lw>>8); \
- sloc+=4; ch_size += 4;if(orgactive) orgaddr += 4;}
-
-#define NSECTS 16 // Max. number of sections
+#define D_rword(w) {chcheck(2);*chptr++=(uint8_t)(w); \
+ *chptr++=(uint8_t)((w)>>8); \
+ sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;}
+
+// Macro for the 56001. Word size on this device is 24 bits wide. I hope that
+// orgaddr += 1 means that the addresses in the device reflect this. [A: Yes.]
+#define D_dsp(w) {chcheck(3);*chptr++=(uint8_t)(w>>16); \
+ *chptr++=(uint8_t)(w>>8); *chptr++=(uint8_t)w; \
+ sloc+=1; ch_size += 3; if(orgactive) orgaddr += 1; \
+ dsp_written_data_in_current_org=1;}
+
+// This macro expects to get an array of uint8_ts with the hi bits in a[0] and
+// the low bits in a[11] (Big Endian).
+#define D_extend(a) {chcheck(12); memcpy(chptr, a, 12); chptr+=12; sloc+=12, \
+ ch_size+=12; if (orgactive) orgaddr+=12;}
+
+// Fill n bytes with zeroes
+#define D_ZEROFILL(n) {chcheck(n); memset(chptr, 0, n); chptr+=n; sloc+=n; \
+ ch_size+=n; if (orgactive) orgaddr+=n;}
+
+//OK, this is bad, mmkay? The constants defined in rmac.h are used as indices into an array which means that this was never meant to be defined this way--at least if it was, it was a compromise that has come home to bite us all in the ass. !!! FIX !!!
+//#define NSECTS 16 // Max. number of sections
+#define NSECTS 256 // Max. number of sections
// Tunable (storage) definitions
-#define CH_THRESHOLD 64 // Minimum amount of space in code chunk
-#define CH_CODE_SIZE 2048 // Code chunk normal allocation
-#define CH_FIXUP_SIZE 1024 // Fixup chunk normal allocation
+#define CH_THRESHOLD 32 // Minimum amount of space in code chunk
+#define CH_CODE_SIZE 4096 // Code chunk normal allocation (4K)
// Section attributes (.scattr)
-#define SUSED 0x8000 // Section is used (really, valid)
-#define SBSS 0x4000 // Section can contain no data
-#define SABS 0x2000 // Section is absolute
-#define SPIC 0x1000 // Section is position-independent code
-
-// Fixup record a WORD of these bits, followed by a loc and then a pointer
-// to a symbol or an ENDEXPR-terminated postfix expression.
-//
-// SYMBOL EXPRESSION
-// ------ ----------
-// ~FU_EXPR FU_EXPR fixup type
-// loc.L loc.L location in section
-// fileno.W fileno.W file number fixup occurred in
-// lineno.W lineno.W line number fixup occurred in
-// symbol.L size.W &symbol / size of expression
-// token.L expression list
-// (etc)
-// ENDEXPR.L (end of expression)
-#define FUMASK 007 // Mask for fixup cases:
-#define FU_QUICK 000 // Fixup 3-bit quick instr field
-#define FU_BYTE 001 // Fixup byte
-#define FU_WORD 002 // Fixup word
-#define FU_WBYTE 003 // Fixup byte (at loc+1)
-#define FU_LONG 004 // Fixup long
-#define FU_BBRA 005 // Fixup byte branch
-#define FU_6BRA 007 // Fixup 6502-format branch offset
-#define FU_SEXT 010 // Ok to sign extend
-#define FU_PCREL 020 // Subtract PC first
-#define FU_EXPR 040 // Expression (not symbol) follows
-
+#define SUSED 0x8000 // Section is used (really, valid)
+#define SBSS 0x4000 // Section can contain no data
+#define SABS 0x2000 // Section is absolute
+#define SPIC 0x1000 // Section is position-independent code
+
+// FIXUP attributes
+#define FUMASK 0x000F // Mask for fixup cases:
+#define FU_QUICK 0x0000 // Fixup 3-bit quick instruction field
+#define FU_BYTE 0x0001 // Fixup byte
+#define FU_WORD 0x0002 // Fixup word
+#define FU_WBYTE 0x0003 // Fixup byte (at loc+1)
+#define FU_LONG 0x0004 // Fixup long
+#define FU_BBRA 0x0005 // Fixup byte branch
+#define FU_6BRA 0x0007 // Fixup 6502-format branch offset
+#define FU_BYTEH 0x0008 // Fixup 6502 high byte of immediate word
+#define FU_BYTEL 0x0009 // Fixup 6502 low byte of immediate word
+#define FU_QUAD 0x000A // Fixup quad-word (8 bytes, typically OP)
+#define FU_56001 0x000B // Fixup code for all 56001 modes
+
+#define FU_SEXT 0x0010 // Ok to sign extend
+#define FU_PCREL 0x0020 // Subtract PC first
+#define FU_PCRELX 0x1000000 // 030 variant
+#define FU_EXPR 0x0040 // Expression (not symbol) follows
+
+#define FU_GLOBAL 0x0080 // Mark global symbol
+
+#define FUMASKRISC 0x0F00 // Mask for RISC fixup cases
#define FU_MOVEI 0x0100
#define FU_JR 0x0200
-#define FU_MJR 0x0300
#define FU_REGONE 0x0400
#define FU_NUM15 0x0500
#define FU_NUM31 0x0600
#define FU_NUM32 0x0700
#define FU_REGTWO 0x0800
+
#define FU_SUB32 0x1000
-#define FU_ISBRA 0x2000 // Word forward fixup is a BRA or DBRA
-#define FU_LBRA 0x4000 // Long branch, for short branch detect
-#define FU_DONE 0x8000 // Fixup has been done
+#define FU_ISBRA 0x2000 // Word forward fixup is a BRA or DBRA
+#define FU_LBRA 0x4000 // Long branch, for short branch detect
+#define FU_DONE 0x8000 // Fixup has been done
+
+// FPU fixups
+#define FU_FLOATSING 0x000D // Fixup 32-bit float
+#define FU_FLOATDOUB 0x000E // Fixup 64-bit float
+#define FU_FLOATEXT 0x000F // Fixup 96-bit float
+
+// OP fixups
+#define FU_OBJLINK 0x10000 // Fixup OL link addr (bits 24-42, drop last 3)
+#define FU_OBJDATA 0x20000 // Fixup OL data addr (bits 43-63, drop last 3)
+
+// DSP56001 fixups
+#define FUMASKDSP 0xF00000 // Mask for DSP56001 fuckups^Wfixups
+#define FU_DSPIMM5 0x100000 // Fixup 5-bit immediate
+#define FU_DSPADR12 0x200000 // Fixup 12-bit address
+#define FU_DSPADR24 0x300000 // Fixup 24-bit address
+#define FU_DSPADR16 0x400000 // Fixup 16-bit address
+#define FU_DSPIMM12 0x500000 // Fixup 12-bit immediate
+#define FU_DSPIMM24 0x600000 // Fixup 24-bit immediate
+#define FU_DSPIMM8 0x700000 // Fixup 8-bit immediate
+#define FU_DSPADR06 0x800000 // Fixup 6-bit address
+#define FU_DSPPP06 0x900000 // Fixup 6 bit pp address
+#define FU_DSPIMMFL8 0xA00000 // Fixup 8-bit immediate float
+#define FU_DSPIMMFL16 0xB00000 // Fixup 16-bit immediate float
+#define FU_DSPIMMFL24 0xC00000 // Fixup 24-bit immediate float
+
// Chunks are used to hold generated code and fixup records
#define CHUNK struct _chunk
CHUNK {
- CHUNK *chnext; // Next, previous chunks in section
- CHUNK *chprev;
- LONG chloc; // Base addr of this chunk
- LONG challoc; // #bytes allocated for chunk
- LONG ch_size; // #bytes chunk actually uses
- char *chptr; // Data for this chunk
+ CHUNK * chnext; // Next, previous chunks in section
+ CHUNK * chprev;
+ uint32_t chloc; // Base addr of this chunk
+ uint32_t challoc; // # bytes allocated for chunk
+ uint32_t ch_size; // # bytes chunk actually uses
+ uint8_t * chptr; // Data for this chunk
+};
+
+// Fixup records can also hold an expression (if any)
+#define FIXUP struct _fixup
+FIXUP {
+ FIXUP * next; // Pointer to next FIXUP
+ uint32_t attr; // Fixup type
+ uint32_t loc; // Location in section
+ uint16_t fileno; // ID of current file
+ uint32_t lineno; // Current line
+ TOKEN * expr; // Pointer to stored expression (if any)
+ SYM * symbol; // Pointer to symbol (if any)
+ uint32_t orgaddr; // Fixup origin address (used for FU_JR)
};
// Section descriptor
#define SECT struct _sect
SECT {
- WORD scattr; // Section attributes
- LONG sloc; // Current loc-in / size-of section
- CHUNK *sfcode; // First chunk in section
- CHUNK *scode; // Last chunk in section
- CHUNK *sffix; // First fixup chunk
- CHUNK *sfix; // Last fixup chunk
-};
-
-// A mark is of the form:
-// .W <to+flags> section mark is relative to, and flags in upper byte
-// .L <loc> location of mark in "from" section
-// .W [from] new from section
-// .L [symbol] symbol involved in external reference
-#define MCHUNK struct _mchunk
-MCHUNK {
- MCHUNK *mcnext; // Next mark chunk
- PTR mcptr; // Vector of marks
- LONG mcalloc; // #marks allocted to mark block
- LONG mcused; // #marks used in block
+ uint16_t scattr; // Section attributes
+ uint32_t sloc; // Current loc-in / size-of section
+ uint32_t relocs; // # of relocations for this section
+ uint32_t orgaddr; // Current org'd address ***NEW***
+ CHUNK * sfcode; // First chunk in section
+ CHUNK * scode; // Last chunk in section
+ FIXUP * sffix; // First fixup
+ FIXUP * sfix; // Last fixup ***NEW***
};
-#define MWORD 0x0000 // Marked word
-#define MLONG 0x0100 // Marked long
-#define MMOVEI 0x0200
-#define MCHFROM 0x8000 // Mark includes change-to-from
-#define MSYMBOL 0x4000 // Mark includes symbol number
-#define MCHEND 0x2000 // Indicates end of mark chunk
-#define MPCREL 0x1000 // Mark is PC-relative
-
-#define MAXFWDJUMPS 1024 // Maximum forward jumps to check
-extern unsigned fwdjump[MAXFWDJUMPS];
-extern unsigned fwindex;
+// 680x0 defines
+#define CPU_68000 1
+#define CPU_68020 2
+#define CPU_68030 4
+#define CPU_68040 8
+#define CPU_68060 16
+#define FPU_NONE 0
+#define FPU_68881 1
+#define FPU_68882 2
+#define FPU_68040 4
+#define FPU_68060 8
+
+// Helper macros to test for active CPU
+#define CHECK00 if (activecpu == CPU_68000) return error(unsupport)
+#define CHECK20 if (activecpu == CPU_68020) return error(unsupport)
+#define CHECK30 if (activecpu == CPU_68030) return error(unsupport)
+#define CHECK40 if (activecpu == CPU_68040) return error(unsupport)
+#define CHECK60 if (activecpu == CPU_68060) return error(unsupport)
+#define CHECKNO00 if (activecpu != CPU_68000) return error(unsupport)
+#define CHECKNO20 if (activecpu != CPU_68020) return error(unsupport)
+#define CHECKNO30 if (activecpu != CPU_68030) return error(unsupport)
+#define CHECKNO40 if (activecpu != CPU_68040) return error(unsupport)
+#define CHECKNO60 if (activecpu != CPU_68060) return error(unsupport)
+#define CHECKNOFPU if (!activefpu) return error(unsupport)
// Globals, external etc
-extern LONG sloc;
-extern WORD scattr;
-extern char *chptr;
-extern LONG ch_size;
+extern uint32_t sloc;
+extern uint16_t scattr;
+extern uint8_t * chptr;
+extern uint8_t * chptr_opcode;
+extern uint32_t ch_size;
extern int cursect;
extern SECT sect[];
-extern LONG challoc;
-extern CHUNK *scode;
+extern uint32_t challoc;
+extern CHUNK * scode;
// Prototypes
-void init_sect(void);
-void switchsect(int);
-void savsect(void);
-int fixtest(int, LONG);
-int chcheck(LONG);
-int fixup(WORD, LONG, TOKEN *);
-int fixups(void);
-int resfix(int);
-
-#endif // __SECT_H__
\ No newline at end of file
+void InitSection(void);
+void SwitchSection(int);
+void SaveSection(void);
+int fixtest(int, uint32_t);
+void chcheck(uint32_t);
+int AddFixup(uint32_t, uint32_t, TOKEN *);
+int ResolveAllFixups(void);
+
+#endif // __SECT_H__
+