214 lines
4.2 KiB
C
214 lines
4.2 KiB
C
/** @file izt/i186.c
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i186 specific general functions.
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*/
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#include "izt.h"
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static REG _i186_otherRegs[] = {
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{ 1, REG_ID_AL, "al", 0, { REG_ID_AX, REG_ID_NONE, REG_ID_NONE } },
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{ 1, REG_ID_AH, "ah", 0, { REG_ID_AX, REG_ID_NONE, REG_ID_NONE } },
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{ 2, REG_ID_AX, "ax", 0, { REG_ID_AL, REG_ID_AH, REG_ID_NONE } },
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{ 1, REG_ID_BL, "bl", 0, { REG_ID_BX, REG_ID_NONE, REG_ID_NONE } },
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{ 1, REG_ID_BH, "bh", 0, { REG_ID_BX, REG_ID_NONE, REG_ID_NONE } },
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{ 2, REG_ID_BX, "bx", 0, { REG_ID_BL, REG_ID_BH, REG_ID_NONE } },
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{ 2, REG_ID_BP, "bp", 0, { REG_ID_NONE, REG_ID_NONE, REG_ID_NONE } },
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{ 0, REG_ID_NONE,"??", 0, { REG_ID_NONE, REG_ID_NONE, REG_ID_NONE } }
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};
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static REG _i186_regs[] = {
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{ 1, REG_ID_CL, "cl", 0, { REG_ID_CX, REG_ID_NONE, REG_ID_NONE } },
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{ 1, REG_ID_CH, "ch", 0, { REG_ID_CX, REG_ID_NONE, REG_ID_NONE } },
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{ 1, REG_ID_DL, "dl", 0, { REG_ID_DX, REG_ID_NONE, REG_ID_NONE } },
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{ 1, REG_ID_DH, "dh", 0, { REG_ID_DX, REG_ID_NONE, REG_ID_NONE } },
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{ 2, REG_ID_CX, "cx", 0, { REG_ID_CL, REG_ID_CH, REG_ID_NONE } },
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{ 2, REG_ID_DX, "dx", 0, { REG_ID_DL, REG_ID_DH, REG_ID_NONE } },
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{ 0, REG_ID_NONE,"??", 0, { REG_ID_NONE, REG_ID_NONE, REG_ID_NONE } }
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};
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static IZT_PORT _i186_port = {
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_i186_regs,
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{ _i186_otherRegs + 0, _i186_otherRegs + 1, _i186_otherRegs + 2 },
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_i186_otherRegs + 5,
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_i186_otherRegs + 6
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};
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static char _defaultRules[] =
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{
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//#include "peeph.rul"
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""
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};
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/* list of key words used by i186 */
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static char *_i186_keywords[] =
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{
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NULL
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};
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#include "i186_mappings.i"
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static void
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_i186_init (void)
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{
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asm_addTree(&_as86_i186_mappings);
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izt_init(&_i186_port);
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}
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static void
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_i186_reset_regparm ()
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{
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}
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static int
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_i186_regparm (sym_link * l)
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{
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// PENDING: No register parameters.
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return 0;
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}
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static bool
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_i186_parseOptions (int *pargc, char **argv, int *i)
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{
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/* TODO: allow port-specific command line options to specify
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* segment names here.
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*/
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return FALSE;
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}
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static void
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_i186_finaliseOptions (void)
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{
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// No options
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}
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static void
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_i186_setDefaultOptions (void)
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{
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// No options
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}
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static const char *
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_i186_getRegName (struct regs *reg)
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{
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if (reg)
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return reg->name;
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wassert (0);
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return "err";
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}
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static void
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_i186_genAssemblerPreamble (FILE * of)
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{
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// PENDING
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}
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/* Generate interrupt vector table. */
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static int
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_i186_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
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{
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// PENDING
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return 0;
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}
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/** $1 is always the basename.
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$2 is always the output file.
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$3 varies
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$l is the list of extra options that should be there somewhere...
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MUST be terminated with a NULL.
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*/
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// PENDING
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static const char *_linkCmd[] =
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{
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"aslink", "-nf", "$1", NULL
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};
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// PENDING
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static const char *_asmCmd[] =
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{
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"gpasm", NULL, NULL, NULL
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};
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void
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i186_assignRegisters (eBBlock ** ebbs, int count)
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{
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}
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/* Globals */
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PORT i186_port = {
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TARGET_ID_I186,
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"i186",
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"Intel 80186", /* Target name */
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{
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FALSE, /* Emit glue around main */
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MODEL_SMALL,
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MODEL_SMALL
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},
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{
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_asmCmd,
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NULL,
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NULL,
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NULL,
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0,
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".s"
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},
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{
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_linkCmd,
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NULL,
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NULL,
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".o"
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},
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{
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_defaultRules
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},
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{
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/* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
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1, 2, 2, 4, 2, 2, 2, 1, 4, 4
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},
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{
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".BSS",
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".BSS",
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".TEXT",
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".DATA",
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".DATA",
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".DATA",
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".DATA",
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".DATA",
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".TEXT",
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".DATA",
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".TEXT",
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".TEXT",
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NULL,
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NULL,
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1
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},
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{
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+1, 1, 4, 1, 1, 0
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},
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/* i186 has an 16 bit mul */
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{
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2, 0
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},
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"_",
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_i186_init,
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_i186_parseOptions,
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_i186_finaliseOptions,
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_i186_setDefaultOptions,
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izt_assignRegisters,
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_i186_getRegName ,
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_i186_keywords,
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_i186_genAssemblerPreamble,
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_i186_genIVT ,
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_i186_reset_regparm,
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_i186_regparm,
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NULL,
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NULL,
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NULL,
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FALSE,
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0, /* leave lt */
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0, /* leave gt */
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1, /* transform <= to ! > */
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1, /* transform >= to ! < */
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1, /* transform != to !(a == b) */
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0, /* leave == */
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FALSE, /* No array initializer support. */
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PORT_MAGIC
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};
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