X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=sect.h;h=b3f6e0f6bfdc04acfe87555e6e763e7d4f1dcf4d;hp=7594056e165645055fc114d400db482c0d76a1a6;hb=9153334781cd2e23750f4dc002e847606c07a1f0;hpb=d28f432296e812643e236d1bfc9b556a7b11c461 diff --git a/sect.h b/sect.h index 7594056..b3f6e0f 100644 --- a/sect.h +++ b/sect.h @@ -1,43 +1,70 @@ -//////////////////////////////////////////////////////////////////////////////////////////////////// -// 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, 2011-2018 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" -// Macros to deposit code in the current section +// Macros to deposit code in the current section (in Big Endian) // 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_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;} + +// 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. +#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) {memcpy(chptr, a, 12); chptr+=12; sloc+=12, ch_size+=12;\ + if (orgactive) orgaddr+=12;} + +// 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 // 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 +// N.B.: THIS IS NO LONGER TRUE // Fixup record a WORD of these bits, followed by a loc and then a pointer // to a symbol or an ENDEXPR-terminated postfix expression. // @@ -51,96 +78,124 @@ // 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 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_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 +// 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 +}; + +// 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 section mark is relative to, and flags in upper byte -// .L 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); +int chcheck(uint32_t); +int AddFixup(uint32_t, uint32_t, TOKEN *); +int ResolveAllFixups(void); + +#endif // __SECT_H__ +