X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=sect.h;h=14dc65f86b046be347c32592a408f288ef10267f;hp=d64e130ee32b87ff30f327c5915eca60bd418190;hb=4205233c8397c581b4d27ab36ab81ec896ef3dd0;hpb=d0c28c349ddfb8393568037f68bddbe8979ce0df diff --git a/sect.h b/sect.h index d64e130..14dc65f 100644 --- a/sect.h +++ b/sect.h @@ -1,73 +1,95 @@ // -// 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, 2011-2020 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 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) {memset(chptr, 0, n); chptr+=n; sloc+=n; ch_size+=n;\ - if (orgactive) orgaddr+=n;} +#define D_ZEROFILL(n) {chcheck(n); memset(chptr, 0, n); chptr+=n; sloc+=n; \ + ch_size+=n; if (orgactive) orgaddr+=n;} -#define NSECTS 16 // Max. number of sections +//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 FUMASKRISC 0x0F00 // Mask for RISC fixup cases +#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_REGONE 0x0400 @@ -77,70 +99,116 @@ #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 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 +// 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 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); +void chcheck(uint32_t); +int AddFixup(uint32_t, uint32_t, TOKEN *); int ResolveAllFixups(void); #endif // __SECT_H__ +