560 lines
16 KiB
C++
560 lines
16 KiB
C++
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#include "dsp56k.hpp"
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#include <diskio.hpp>
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int data_id;
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//--------------------------------------------------------------------------
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static const char *const register_names[] =
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{
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// data arithmetic logic unit
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"x", "x0", "x1",
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"y", "y0", "y1",
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// accumulator registers
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"a", "a0", "a1", "a2",
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"b", "b0", "b1", "b2",
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"ab", // a1:b1
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"ba", // b1:a1
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"a10", // a1:a0
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"b10", // b1:b0
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// address generation unit (AGU)
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"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", // pointers
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"n0", "n1", "n2", "n3", "n4", "n5", "n6", "n7", // offsets
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"m0", "m1", "m2", "m3", "m4", "m5", "m6", "m7", // modifiers
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// Program Control Unit
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"pc", // Program Counter (16 Bits)
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"mr", // Mode Register (8 Bits)
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"ccr", // Condition Code Register (8 Bits)
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"sr", // Status Register (MR:CCR, 16 Bits)
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"omr", // Operating Mode Register (8 Bits)
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"la", // Hardware Loop Address Register (16 Bits)
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"lc", // Hardware Loop Counter (16 Bits)
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"sp", // System Stack Pointer (6 Bits)
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"ss", // System Stack RAM (15X32 Bits)
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"ssh", // Upper 16 Bits of the Contents of the Current Top of Stack
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"ssl", // Lower 16 Bits of the Contents of the Current Top of Stack
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"sz", // Stack Size register
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"sc", // Stack Counter register
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"ep", // Extension Pointer register
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"vba", // Vector Base Address Register
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"cs","ds", // virtual registers for code and data segments
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};
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//--------------------------------------------------------------------------
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// 6x
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static const uchar retcode_0[] = { 0x0C, 0x00, 0x00 };
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static const uchar retcode_1[] = { 0x04, 0x00, 0x00 };
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// 61
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static const uchar retcode_2[] = { 0x06, 0x00 };
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static const uchar retcode_3[] = { 0x07, 0x00 };
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static const bytes_t retcodes6x[] =
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{
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{ sizeof(retcode_0), retcode_0 },
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{ sizeof(retcode_1), retcode_1 },
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{ 0, NULL }
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};
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static const bytes_t retcodes61[] =
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{
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{ sizeof(retcode_2), retcode_2 },
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{ sizeof(retcode_3), retcode_3 },
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{ 0, NULL }
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};
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//-----------------------------------------------------------------------
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// Motorola DSP56000 Assembler
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//-----------------------------------------------------------------------
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static const asm_t motasm =
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{
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// AS_ASCIIC
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ASH_HEXF4 // $34
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|ASD_DECF0 // 34
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|ASB_BINF2 // %01010
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|ASO_OCTF1 // 0123
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|AS_COLON
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|AS_N2CHR
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|AS_NCMAS
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|AS_ONEDUP,
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0,
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"Motorola DSP56K Assembler",
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0,
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NULL, // header lines
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"org", // org
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"end", // end
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";", // comment string
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'"', // string delimiter
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'\'', // char delimiter
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"\"'", // special symbols in char and string constants
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"dc", // ascii string directive
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"dcb", // byte directive
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"dc", // word directive
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NULL, // double words
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NULL, // qwords
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NULL, // oword (16 bytes)
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NULL, // float (4 bytes)
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NULL, // double (8 bytes)
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NULL, // tbyte (10/12 bytes)
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NULL, // packed decimal real
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"bs#s(c,) #d, #v", // arrays (#h,#d,#v,#s(...)
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"ds %s", // uninited arrays
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"equ", // equ
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NULL, // 'seg' prefix (example: push seg seg001)
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"*", // current IP (instruction pointer)
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NULL, // func_header
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NULL, // func_footer
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"global", // "public" name keyword
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NULL, // "weak" name keyword
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"xref", // "extrn" name keyword
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// .extern directive requires an explicit object size
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NULL, // "comm" (communal variable)
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NULL, // get_type_name
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NULL, // "align" keyword
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'(', ')', // lbrace, rbrace
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"%", // mod
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"&", // and
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"|", // or
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"^", // xor
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"~", // not
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"<<", // shl
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">>", // shr
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NULL, // sizeof
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AS2_BYTE1CHAR,// One symbol per processor byte
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};
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//-----------------------------------------------------------------------
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// GNU ASM
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//-----------------------------------------------------------------------
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static const asm_t gas =
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{
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AS_ASCIIC
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|ASH_HEXF4 // $34
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|ASD_DECF0 // 34
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|ASB_BINF3 // 0b01010
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|ASO_OCTF1 // 0123
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|AS_COLON
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|AS_N2CHR
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|AS_NCMAS
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|AS_ONEDUP,
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UAS_GNU,
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"GNU-like hypothetical assembler",
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0,
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NULL, // header lines
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".org", // org
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NULL, // end
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";", // comment string
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'"', // string delimiter
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'\'', // char delimiter
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"\"'", // special symbols in char and string constants
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".string", // ascii string directive
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".byte", // byte directive
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".short", // word directive
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".long", // double words
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NULL, // qwords
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NULL, // oword (16 bytes)
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NULL, // float (4 bytes)
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NULL, // double (8 bytes)
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NULL, // tbyte (10/12 bytes)
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NULL, // packed decimal real
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".ds.#s(b,w,l,d) #d, #v", // arrays (#h,#d,#v,#s(...)
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".space %s", // uninited arrays
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"=", // equ
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NULL, // 'seg' prefix (example: push seg seg001)
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".", // current IP (instruction pointer)
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NULL, // func_header
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NULL, // func_footer
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".global", // "public" name keyword
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NULL, // "weak" name keyword
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".extern", // "extrn" name keyword
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// .extern directive requires an explicit object size
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".comm", // "comm" (communal variable)
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NULL, // get_type_name
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".align", // "align" keyword
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'(', ')', // lbrace, rbrace
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"mod", // mod
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"and", // and
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"or", // or
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"xor", // xor
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"not", // not
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"shl", // shl
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"shr", // shr
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NULL, // sizeof
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AS2_BYTE1CHAR,// One symbol per processor byte
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NULL, // cmnt2
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NULL, // low8
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NULL, // high8
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NULL, // low16
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NULL, // high16
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"#include \"%s\"", // a_include_fmt
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};
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static const asm_t *const asms[] = { &motasm, &gas, NULL };
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//----------------------------------------------------------------------
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ea_t dsp56k_t::AdditionalSegment(asize_t size, int offset, const char *name) const
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{
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segment_t s;
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int step = is561xx() ? 0xF : 0x1000000-1;
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s.start_ea = free_chunk(0x1000000, size, step);
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s.end_ea = s.start_ea + size;
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s.sel = allocate_selector((s.start_ea-offset) >> 4);
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s.type = SEG_DATA;
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s.bitness = ph.dnbits > 16;
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add_segm_ex(&s, name, "DATA", ADDSEG_NOSREG|ADDSEG_OR_DIE);
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return s.start_ea - offset;
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}
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inline ea_t get_start(const segment_t *s)
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{
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return s ? s->start_ea : BADADDR;
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}
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//--------------------------------------------------------------------------
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const char *dsp56k_iohandler_t::iocallback(const ioports_t &iop, const char *line)
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{
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int size;
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if ( qsscanf(line, "XMEMSIZE = %i", &size) == 1 )
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{
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pm.xmemsize = size;
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RETOK:
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pm.ioh.deviceparams.sprnt("XMEM=0x%X YMEM=0x%X", pm.xmemsize, pm.ymemsize);
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return NULL;
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}
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if ( !pm.is561xx() && qsscanf(line, "YMEMSIZE = %i", &size) == 1 )
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{
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pm.ymemsize = size;
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goto RETOK;
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}
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return pm.ioh.standard_callback(iop, line);
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}
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const ioport_t *dsp56k_t::find_port(ea_t address)
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{
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return find_ioport(ioh.ports, address);
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}
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//--------------------------------------------------------------------------
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void dsp56k_t::create_xmem_ymem(void)
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{
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if ( xmem == BADADDR )
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{
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xmem = AdditionalSegment(xmemsize, 0, "XMEM");
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if ( !is561xx() )
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ymem = AdditionalSegment(ymemsize, 0, "YMEM");
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}
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}
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//--------------------------------------------------------------------------
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void dsp56k_t::select_device(const char *dname, int resp_info)
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{
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ioh.set_device_name(dname, resp_info);
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create_xmem_ymem();
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for ( int i=0; i < ioh.ports.size(); i++ )
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{
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const ioport_t &p = ioh.ports[i];
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ea_t ea = xmem + p.address;
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const char *name = p.name.c_str();
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ea_t nameea = get_name_ea(BADADDR, name);
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if ( nameea != ea )
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{
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set_name(nameea, "");
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if ( !set_name(ea, name, SN_NOCHECK|SN_NOWARN|SN_NODUMMY) )
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set_cmt(ea, name, 0);
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}
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}
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}
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//--------------------------------------------------------------------------
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const char *dsp56k_t::set_idp_options(
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const char *keyword,
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int /*value_type*/,
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const void * /*value*/,
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bool /*idb_loaded*/)
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{
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if ( keyword != NULL )
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return IDPOPT_BADKEY;
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char cfgfile[QMAXFILE];
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ioh.get_cfg_filename(cfgfile, sizeof(cfgfile));
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if ( choose_ioport_device(&ioh.device, cfgfile) )
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select_device(ioh.device.c_str(), IORESP_INT);
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return IDPOPT_OK;
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}
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//-----------------------------------------------------------------------
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// We always return "yes" because of the messy problem that
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// there are additional operands with a wrong operand number (always 1)
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static bool idaapi can_have_type(const op_t &)
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{
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return true;
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}
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//--------------------------------------------------------------------------
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void dsp56k_t::set_cpu(int procno)
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{
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procnum = procno;
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ph.cnbits = (is561xx() ) ? 16 : 24;
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ph.dnbits = (is561xx() || is566xx()) ? 16 : 24;
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ph.retcodes = (is561xx() ) ? retcodes61 : retcodes6x;
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}
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//----------------------------------------------------------------------
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void dsp56k_t::load_from_idb()
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{
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xmem = get_start(get_segm_by_name("XMEM"));
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if ( !is561xx() )
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ymem = get_start(get_segm_by_name("YMEM"));
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ioh.restore_device();
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}
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//----------------------------------------------------------------------
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// This old-style callback only returns the processor module object.
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static ssize_t idaapi notify(void *, int msgid, va_list)
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{
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if ( msgid == processor_t::ev_get_procmod )
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return size_t(SET_MODULE_DATA(dsp56k_t));
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return 0;
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}
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//--------------------------------------------------------------------------
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ssize_t idaapi dsp56k_t::on_event(ssize_t msgid, va_list va)
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{
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int code = 0;
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switch ( msgid )
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{
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case processor_t::ev_init:
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helper.create(PROCMOD_NODE_NAME);
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break;
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case processor_t::ev_term:
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clr_module_data(data_id);
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break;
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case processor_t::ev_newfile: // new file loaded
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{
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// data memory could already be present, check it
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xmem = get_start(get_segm_by_name("XMEM"));
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if ( !is561xx() )
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ymem = get_start(get_segm_by_name("YMEM"));
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char cfgfile[QMAXFILE];
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ioh.get_cfg_filename(cfgfile, sizeof(cfgfile));
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iohandler_t::parse_area_line0_t cb(ioh);
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if ( choose_ioport_device2(&ioh.device, cfgfile, &cb) )
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select_device(ioh.device.c_str(), IORESP_AREA|IORESP_INT);
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else
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create_xmem_ymem();
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}
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break;
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case processor_t::ev_ending_undo:
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// restore ptype
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set_cpu(ph.get_proc_index());
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//fall through
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case processor_t::ev_oldfile: // old file loaded
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load_from_idb();
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break;
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case processor_t::ev_newprc: // new processor type
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{
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int n = va_arg(va, int);
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// bool keep_cfg = va_argi(va, bool);
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if ( procnum == -1 )
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{
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set_cpu(n);
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}
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else if ( procnum != n ) // can't change the processor type
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{ // after the initial set up
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warning("Sorry, processor type cannot be changed after loading");
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code = -1;
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break;
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}
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}
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break;
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case processor_t::ev_is_sane_insn:
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{
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const insn_t &insn = *va_arg(va, const insn_t *);
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int nocrefs = va_arg(va, int);
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return is_sane_insn(insn, nocrefs) == 1 ? 1 : -1;
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}
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case processor_t::ev_out_mnem:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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out_mnem(*ctx);
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return 1;
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}
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case processor_t::ev_out_header:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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header(*ctx);
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return 1;
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}
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case processor_t::ev_out_footer:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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footer(*ctx);
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return 1;
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}
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case processor_t::ev_out_segstart:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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segment_t *seg = va_arg(va, segment_t *);
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segstart(*ctx, seg);
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return 1;
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}
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case processor_t::ev_out_segend:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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segment_t *seg = va_arg(va, segment_t *);
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segend(*ctx, seg);
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return 1;
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}
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case processor_t::ev_ana_insn:
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{
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insn_t *out = va_arg(va, insn_t *);
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return ana(out);
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}
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case processor_t::ev_emu_insn:
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{
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const insn_t *insn = va_arg(va, const insn_t *);
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return emu(*insn) ? 1 : -1;
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}
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case processor_t::ev_out_insn:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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out_insn(*ctx);
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return 1;
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}
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case processor_t::ev_out_operand:
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{
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outctx_t *ctx = va_arg(va, outctx_t *);
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const op_t *_op = va_arg(va, const op_t *);
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return out_opnd(*ctx, *_op) ? 1 : -1;
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}
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case processor_t::ev_can_have_type:
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{
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const op_t *_op = va_arg(va, const op_t *);
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return can_have_type(*_op) ? 1 : -1;
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}
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case processor_t::ev_is_sp_based:
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{
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int *mode = va_arg(va, int *);
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const insn_t *insn = va_arg(va, const insn_t *);
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const op_t *_op = va_arg(va, const op_t *);
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*mode = is_sp_based(*insn, *_op);
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return 1;
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}
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case processor_t::ev_set_idp_options:
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{
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const char *keyword = va_arg(va, const char *);
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int value_type = va_arg(va, int);
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const char *value = va_arg(va, const char *);
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const char **errmsg = va_arg(va, const char **);
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bool idb_loaded = va_argi(va, bool);
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const char *ret = set_idp_options(keyword, value_type, value, idb_loaded);
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if ( ret == IDPOPT_OK )
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return 1;
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if ( errmsg != NULL )
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*errmsg = ret;
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return -1;
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}
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case processor_t::ev_is_align_insn:
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{
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ea_t ea = va_arg(va, ea_t);
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return is_align_insn(ea);
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}
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default:
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break;
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}
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return code;
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}
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//-----------------------------------------------------------------------
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#define FAMILY "Motorola DSP 5600x:"
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static const char *const shnames[] =
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{
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"dsp56k",
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"dsp561xx",
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"dsp563xx",
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"dsp566xx",
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NULL
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};
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static const char *const lnames[] =
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{
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FAMILY"Motorola DSP 5600x",
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"Motorola DSP 561xx",
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"Motorola DSP 563xx",
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"Motorola DSP 566xx",
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NULL
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};
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//-----------------------------------------------------------------------
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// Processor Definition
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//-----------------------------------------------------------------------
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processor_t LPH =
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{
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IDP_INTERFACE_VERSION, // version
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PLFM_DSP56K, // id
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// flag
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PRN_HEX
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| PR_ALIGN
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| PR_BINMEM,
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// flag2
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PR2_IDP_OPTS, // the module has processor-specific configuration options
|
|
24, // 24 bits in a byte for code segments
|
|
24, // 24 bits in a byte for other segments
|
|
shnames,
|
|
lnames,
|
|
|
|
asms,
|
|
|
|
notify,
|
|
|
|
register_names, // Register names
|
|
qnumber(register_names), // Number of registers
|
|
|
|
vCS, // first
|
|
vDS, // last
|
|
0, // size of a segment register
|
|
vCS, vDS,
|
|
|
|
NULL, // No known code start sequences
|
|
retcodes6x,
|
|
|
|
DSP56_null,
|
|
DSP56_last,
|
|
Instructions, // instruc
|
|
0, // int tbyte_size; -- doesn't exist
|
|
{ 0, 7, 15, 0 }, // char real_width[4];
|
|
// number of symbols after decimal point
|
|
// 2byte float (0-does not exist)
|
|
// normal float
|
|
// normal double
|
|
// long double
|
|
DSP56_rts, // Icode of return instruction. It is ok to give any of possible return instructions
|
|
};
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