X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=sect.h;h=b3f6e0f6bfdc04acfe87555e6e763e7d4f1dcf4d;hp=ccb81b1c0ec7a785fe218eda3bfe83468c863341;hb=9153334781cd2e23750f4dc002e847606c07a1f0;hpb=9207a38ed4a09c60a1e9b9995a92bcd4580e3662 diff --git a/sect.h b/sect.h index ccb81b1..b3f6e0f 100644 --- a/sect.h +++ b/sect.h @@ -1,9 +1,9 @@ // -// 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, 2011-2018 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__ @@ -11,9 +11,8 @@ #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++=(uint8_t)(b); sloc++; ch_size++; \ if(orgactive) orgaddr++;} #define D_word(w) {chcheck(2);*chptr++=(uint8_t)((w)>>8); \ @@ -24,11 +23,30 @@ *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); \ +#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_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;} + +// 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;} @@ -46,6 +64,7 @@ #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. // @@ -90,29 +109,74 @@ #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; - 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; @@ -130,7 +194,7 @@ void SwitchSection(int); void SaveSection(void); int fixtest(int, uint32_t); int chcheck(uint32_t); -int AddFixup(uint16_t, uint32_t, TOKEN *); +int AddFixup(uint32_t, uint32_t, TOKEN *); int ResolveAllFixups(void); #endif // __SECT_H__