X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=sect.h;h=14dc65f86b046be347c32592a408f288ef10267f;hp=ccb81b1c0ec7a785fe218eda3bfe83468c863341;hb=4205233c8397c581b4d27ab36ab81ec896ef3dd0;hpb=9207a38ed4a09c60a1e9b9995a92bcd4580e3662 diff --git a/sect.h b/sect.h index ccb81b1..14dc65f 100644 --- a/sect.h +++ b/sect.h @@ -1,44 +1,66 @@ // -// 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, 2017 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 -// 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++=(uint8_t)(b); sloc++; ch_size++; \ - if(orgactive) orgaddr++;} +// 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) {*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_rword(w) {*chptr++=(uint8_t)w; *chptr++=(uint8_t)(w>>8); \ - sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;} -//#define D_rlong(lw) {*chptr++=(uint8_t)(lw>>16);*chptr++=(uint8_t)(lw>>24);\ -// *chptr++=(uint8_t)lw;*chptr++=(uint8_t)(lw>>8); \ -// sloc+=4; ch_size += 4;if(orgactive) orgaddr += 4;} + *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;} + +// D_rword deposits a "6502" format (low, high) word (01). +#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) @@ -46,19 +68,7 @@ #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) +// 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 @@ -69,9 +79,12 @@ #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 @@ -90,29 +103,93 @@ #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; - 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 + 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 { - 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 + 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*** }; +// 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 uint32_t sloc; extern uint16_t scattr; @@ -129,8 +206,8 @@ void InitSection(void); void SwitchSection(int); void SaveSection(void); int fixtest(int, uint32_t); -int chcheck(uint32_t); -int AddFixup(uint16_t, uint32_t, TOKEN *); +void chcheck(uint32_t); +int AddFixup(uint32_t, uint32_t, TOKEN *); int ResolveAllFixups(void); #endif // __SECT_H__