#include "sam8.hpp" #include #include extern "C" processor_t LPH; /* * Kernel event handler * * @param msgid Message ID to handle * @param ... Variable list of arguments * @return 1 on success */ static int notify(processor_t::idp_notify msgid, ...) { va_list va; va_start(va, msgid); // do IDA callbacks int code = invoke_callbacks(HT_IDP, msgid, va); if (code) return code; // deal with notification codes switch(msgid) { case ph.init: inf.mf = 1; // Set big endian mode in the IDA kernel break; case ph.newfile: { segment_t seg; // create a new segment for code data memset(&seg, 0, sizeof(segment_t)); seg.startEA = SAM8_CODESEG_START; seg.endEA = SAM8_CODESEG_START + SAM8_CODESEG_SIZE; seg.sel = allocate_selector(seg.startEA >> 4); seg.type = SEG_NORM; add_segm_ex(&seg, "code", NULL, ADDSEG_NOSREG|ADDSEG_OR_DIE); // create a new segment for the external data memset(&seg, 0, sizeof(segment_t)); seg.startEA = SAM8_EDATASEG_START; seg.endEA = SAM8_EDATASEG_START + SAM8_EDATASEG_SIZE; seg.sel = allocate_selector(seg.startEA >> 4); seg.flags = SFL_HIDDEN; seg.type = SEG_BSS; add_segm_ex(&seg, "emem", NULL, ADDSEG_NOSREG|ADDSEG_OR_DIE); break; } default: break; } va_end(va); // OK return(1); } //----------------------------------------------------------------------- // Condition codes char *ccNames[] = { "F", "LT", "LE", "ULE", "OV", "MI", "EQ", "C", "T", "GE", "GT", "UGT", "NOV", "PL", "NE", "NC", }; /************************************************************************/ /* Register names */ /************************************************************************/ static char *RegNames[] = { "cs","ds" }; /************************************************************************/ /* Samsung Assembler - Version 1.42 */ /* Copyright © 1995,96 M.Y.Chong SAMSUNG ASIA PTE LTD */ /* Semiconductor Division */ /************************************************************************/ /************************************************************************/ /* File headers for SAMA assembler */ /************************************************************************/ static char *sama_headers[] = { "", "; Filename of DEF file describing the chip in use", "CHIP ", "", "; External memory EQU definitions", "; These will appear here when output using the samaout plugin", NULL }; /************************************************************************/ /* Definition of SAMA assembler */ /************************************************************************/ static asm_t sama = { AS_COLON, 0, "Samsung Assembler (SAMA) by Samsung Semiconductor Division", 0, (const char**) sama_headers, // no headers NULL, // no bad instructions "org", "end", ";", // comment string '\'', // string delimiter '\'', // char delimiter "+_*/%&|^()<>!+$@#.,\'\"?", // special symbols in char+string constants "db", // ascii string directive "db", // byte directive "dw", // word directive NULL, // dword (4 bytes) NULL, // qword (8 bytes) NULL, // oword (16 bytes) NULL, // float (4 bytes) NULL, // double (8 bytes) NULL, // tbyte (10/12 bytes) NULL, // packed decimal real NULL, // arrays (#h,#d,#v,#s(...) NULL, // uninited arrays "equ", // equ NULL, // seg prefix NULL, NULL, NULL, NULL, "$", NULL, // func_header NULL, // func_footer NULL, // public NULL, // weak NULL, // extrn NULL, // comm NULL, // get_type_name NULL, // align '(', ')', // lbrace, rbrace NULL, // mod NULL, // and NULL, // or NULL, // xor "~", // not NULL, // shl NULL, // shr NULL, // sizeof 0, }; /************************************************************************/ /* Assemblers supported by this module */ /************************************************************************/ static asm_t *asms[] = { &sama, NULL }; /************************************************************************/ /* Short names of processor */ /************************************************************************/ static char *shnames[] = { "SAM8", NULL }; /************************************************************************/ /* Long names of processor */ /************************************************************************/ static char *lnames[] = { "Samsung SAM8-based processors", NULL }; //-------------------------------------------------------------------------- // Opcodes of "return" instructions. This information will be used in 2 ways: // - if an instruction has the "return" opcode, its autogenerated label // will be "locret" rather than "loc". // - IDA will use the first "return" opcode to create empty subroutines. static uchar retcode_1[] = { 0xAF }; static uchar retcode_2[] = { 0xBF }; static bytes_t retcodes[] = { { sizeof(retcode_1), retcode_1 }, { sizeof(retcode_2), retcode_2 }, { 0, NULL } // NULL terminated array }; //----------------------------------------------------------------------- // Processor Definition //----------------------------------------------------------------------- processor_t LPH = { IDP_INTERFACE_VERSION,// version PLFM_SAM8, // id PR_RNAMESOK | PR_BINMEM, // can use register names for byte names 8, // 8 bits in a byte for code segments 8, // 8 bits in a byte for other segments shnames, // array of short processor names // the short names are used to specify the processor // with the -p command line switch) lnames, // array of long processor names // the long names are used to build the processor type // selection menu asms, // array of target assemblers notify, // the kernel event notification callback header, // generate the disassembly header footer, // generate the disassembly footer segstart, // generate a segment declaration (start of segment) std_gen_segm_footer, // generate a segment footer (end of segment) NULL, // generate 'assume' directives ana, // analyze an instruction and fill the 'cmd' structure emu, // emulate an instruction out, // generate a text representation of an instruction outop, // generate a text representation of an operand out_data, // generate a text representation of a data item NULL, // compare operands NULL, // can an operand have a type? qnumber(RegNames), // Number of registers RegNames, // Register names NULL, // get abstract register 0, // Number of register files NULL, // Register file names NULL, // Register descriptions NULL, // Pointer to CPU registers rVcs,rVds, 0, // size of a segment register rVcs,rVds, NULL, // No known code start sequences retcodes, 0,SAM8_last, Instructions };