//
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Reboot's 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, 2011-2017 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
-// Source Utilised with the Kind Permission of Landon Dyer
+// Source utilised with the kind permission of Landon Dyer
//
#ifndef __SECT_H__
// 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; \
+#define D_byte(b) {*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) {*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) {*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;}
+#define D_rword(w) {*chptr++=(uint8_t)(w); *chptr++=(uint8_t)((w)>>8); \
+ sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;}
+#define D_single(w) {chcheck(4);*chptr++ = ((char *)&w)[3]; \
+ *chptr++ = ((char *)&w)[2]; \
+ *chptr++ = ((char *)&w)[1]; \
+ *chptr++=((char *)&w)[0]; \
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 D_double(w) {chcheck(8);*chptr++=(char)((*(unsigned long long *)&w)); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>8); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>16); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>24); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>32); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>40); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>48); \
+ *chptr++=(char)((*(unsigned long long *)&w)>>56); \
+ sloc+=8; ch_size += 8; if(orgactive) orgaddr += 8;}
+#ifdef _MSC_VER
+#define D_extend(w) {chcheck(12); *chptr++ = (char)((*(unsigned long long *)&w) >> 56); \
+*chptr++ = (char)(((*(unsigned long long *)&w) >> (52)) & 0xf); \
+*chptr++ = (char)(0); \
+*chptr++ = (char)(0); \
+*chptr++ = (char)(((*(unsigned long long *)&w) >> (48 - 3))|0x80 /* assume that the number is normalised */); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (40 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (32 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (24 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (16 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (8 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w << 3)); \
+*chptr++=(char)(0); \
+ sloc+=12; ch_size += 12; if(orgactive) orgaddr += 12;}
+#elif defined(LITTLE_ENDIAN)
+#define D_extend(w) {chcheck(12);*chptr++=((char *)&w)[0]; \
+ *chptr++=((char *)&w)[1]; \
+ *chptr++=((char *)&w)[2]; \
+ *chptr++=((char *)&w)[3]; \
+ *chptr++=((char *)&w)[4]; \
+ *chptr++=((char *)&w)[5]; \
+ *chptr++=((char *)&w)[6]; \
+ *chptr++=((char *)&w)[7]; \
+ *chptr++=((char *)&w)[8]; \
+ *chptr++=((char *)&w)[9]; \
+ *chptr++=((char *)&w)[10]; \
+ *chptr++=((char *)&w)[11]; \
+ sloc+=12; ch_size += 12; if(orgactive) orgaddr += 12;}
+
+#else
+
+#error Please implement a non-byte swapped D_extend!
+
+#endif
// Fill n bytes with zeroes
#define D_ZEROFILL(n) {memset(chptr, 0, n); chptr+=n; sloc+=n; ch_size+=n;\
if (orgactive) orgaddr+=n;}
-#define NSECTS 16 // Max. number of sections
+#define NSECTS 16 // 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 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
// 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
+#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.
// 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 FUMASKRISC 0x0F00 // Mask for RISC fixup cases
+#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_SEXT 0x0010 // Ok to sign extend
+#define FU_PCREL 0x0020 // Subtract PC first
+#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_REGONE 0x0400
#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
+// TODO: these are obviously bogus for now!
+#define FU_FLOATSING 0x0D0B // Fixup 32-bit float
+#define FU_FLOATDOUB 0x0E0B // Fixup 64-bit float
+#define FU_FLOATEXT 0x0F0B // Fixup 96-bit 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
};
// 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
+ uint16_t scattr; // Section attributes
+ uint32_t sloc; // Current loc-in / size-of section
+ uint32_t relocs; // # of relocations for this 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
-};
+// 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
+
+// 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 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
// 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 uint32_t challoc;
extern CHUNK * scode;
// Prototypes
void InitSection(void);
void SwitchSection(int);
void SaveSection(void);
-int fixtest(int, LONG);
-int chcheck(LONG);
-int AddFixup(WORD, LONG, TOKEN *);
+int fixtest(int, uint32_t);
+int chcheck(uint32_t);
+int AddFixup(uint16_t, uint32_t, TOKENPTR);
int ResolveAllFixups(void);
#endif // __SECT_H__
+
projects / rmac / blobdiff