X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fz80%2Fmain.c;h=3de32035b08cdc2eb58c6ed6e628167a7fd347d7;hb=195ee3f3ee25ce2c5f2a59fbd2779c4cb80527c3;hp=5378f7be295affd8cf5a7548f97677881a534c0d;hpb=404dbf4e0b144d60a2e106ef2b32cab556436f62;p=fw%2Fsdcc diff --git a/src/z80/main.c b/src/z80/main.c index 5378f7be..3de32035 100644 --- a/src/z80/main.c +++ b/src/z80/main.c @@ -1,100 +1,797 @@ -#include "common.h" -#include "ralloc.h" +/*------------------------------------------------------------------------- + main.c - Z80 specific definitions. -static char *_z80_keywords[] = { NULL }; + Michael Hope 2001 -void z80_assignRegisters (eBBlock **ebbs, int count); + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) any + later version. -static bool _z80_parseOptions(int *pargc, char **argv) + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + In other words, you are welcome to use, share and improve this program. + You are forbidden to forbid anyone else to use, share and improve + what you give them. Help stamp out software-hoarding! +-------------------------------------------------------------------------*/ + +#include +#include "z80.h" +#include "MySystem.h" +#include "BuildCmd.h" +#include "SDCCutil.h" +#include "dbuf.h" + +static char _z80_defaultRules[] = { - return FALSE; +#include "peeph.rul" +#include "peeph-z80.rul" +}; + +static char _gbz80_defaultRules[] = +{ +#include "peeph.rul" +#include "peeph-gbz80.rul" +}; + +Z80_OPTS z80_opts; + +static OPTION _z80_options[] = + { + { 0, "--callee-saves-bc", &z80_opts.calleeSavesBC, "Force a called function to always save BC" }, + { 0, "--portmode=", NULL, "Determine PORT I/O mode (z80/z180)" }, + { 0, NULL } + }; + +static OPTION _gbz80_options[] = + { + { 0, "--callee-saves-bc", &z80_opts.calleeSavesBC, "Force a called function to always save BC" }, + { 0, NULL } + }; + +typedef enum + { + /* Must be first */ + ASM_TYPE_ASXXXX, + ASM_TYPE_RGBDS, + ASM_TYPE_ISAS, + ASM_TYPE_Z80ASM + } +ASM_TYPE; + +static struct + { + ASM_TYPE asmType; + /* determine if we can register a parameter */ + int regParams; + } +_G; + +static char *_keywords[] = +{ + "sfr", + "nonbanked", + "banked", + "at", //.p.t.20030714 adding support for 'sfr at ADDR' construct + "_naked", //.p.t.20030714 adding support for '_naked' functions + "critical", + "interrupt", + NULL +}; + +extern PORT gbz80_port; +extern PORT z80_port; + +#include "mappings.i" + +static builtins _z80_builtins[] = { + /* Disabled for now. + { "__builtin_strcpy", "v", 2, {"cg*", "cg*" } }, + { "__builtin_memcpy", "cg*", 3, {"cg*", "cg*", "ui" } }, + */ + { NULL , NULL,0, {NULL}} +}; + +static void +_z80_init (void) +{ + z80_opts.sub = SUB_Z80; + asm_addTree (&_asxxxx_z80); } -static void _z80_finaliseOptions(void) +static void +_gbz80_init (void) { + z80_opts.sub = SUB_GBZ80; } -static void _z80_setDefaultOptions(void) -{ - options.genericPtr = 1; /* default on */ - options.nopeep = 1; - options.stackAuto = 1; - options.mainreturn = 1; - options.noregparms = 1; - /* first the options part */ - options.intlong_rent = 1; - - optimize.global_cse = 0; - optimize.label1 = 0; - optimize.label2 = 0; - optimize.label3 = 0; - optimize.label4 = 0; - optimize.loopInvariant = 0; - optimize.loopInduction = 0; +static void +_reset_regparm (void) +{ + _G.regParams = 0; } -static const char *_z80_getRegName(struct regs *reg) +static int +_reg_parm (sym_link * l, bool reentrant) { - if (reg) - return reg->name; - assert(0); - return "err"; + if (options.noRegParams) + { + return FALSE; + } + else + { + if (_G.regParams == 2) + { + return FALSE; + } + else + { + _G.regParams++; + return TRUE; + } + } } +static int +_process_pragma (const char *sz) +{ + if( startsWith( sz, "bank=" ) || startsWith( sz, "bank " )) + { + char buffer[128]; + + if (sz[4]=='=') + werror(W_DEPRECATED_PRAGMA, "bank="); + + strncpy (buffer, sz + 5, sizeof (buffer)); + buffer[sizeof (buffer) - 1 ] = '\0'; + chomp (buffer); + if (isdigit ((unsigned char)buffer[0])) + { -/** $1 is always the basename. - $2 is always the output file. - $3 varies - $l is the list of extra options that should be there somewhere... - MUST be terminated with a NULL. -*/ -static const char *_linkCmd[] = { - "link-z80", "-nf", "$1", NULL + } + else if (!strcmp (buffer, "BASE")) + { + strcpy (buffer, "HOME"); + } + if (isdigit ((unsigned char)buffer[0])) + { + /* Arg was a bank number. Handle in an ASM independent + way. */ + char num[128]; + strncpy (num, sz + 5, sizeof (num)); + num[sizeof (num) -1] = '\0'; + chomp (num); + + switch (_G.asmType) + { + case ASM_TYPE_ASXXXX: + sprintf (buffer, "CODE_%s", num); + break; + case ASM_TYPE_RGBDS: + sprintf (buffer, "CODE,BANK[%s]", num); + break; + case ASM_TYPE_ISAS: + /* PENDING: what to use for ISAS? */ + sprintf (buffer, "CODE,BANK(%s)", num); + break; + default: + wassert (0); + } + } + gbz80_port.mem.code_name = Safe_strdup (buffer); + code->sname = gbz80_port.mem.code_name; + return 0; + } + else if( startsWith( sz, "portmode=" ) || startsWith( sz, "portmode " )) + { /*.p.t.20030716 - adding pragma to manipulate z80 i/o port addressing modes */ + char bfr[128]; + + if (sz[8]=='=') + werror(W_DEPRECATED_PRAGMA, "portmode="); + + strncpy( bfr, sz + 9, sizeof (bfr)); + bfr[sizeof (bfr) - 1] = '\0'; + chomp( bfr ); + + if ( !strcmp( bfr, "z80" )){ z80_opts.port_mode = 80; } + else if( !strcmp( bfr, "z180" )){ z80_opts.port_mode = 180; } + else if( !strcmp( bfr, "save" )){ z80_opts.port_back = z80_opts.port_mode; } + else if( !strcmp( bfr, "restore" )){ z80_opts.port_mode = z80_opts.port_back; } + else return( 1 ); + + return( 0 ); + } + + return 1; +} + +static const char *_gbz80_rgbasmCmd[] = +{ + "rgbasm", "-o\"$1.o\"", "\"$1.asm\"", NULL }; -static const char *_asmCmd[] = { - "as-z80", "-plosgff", "$1.o", "$1.asm", NULL +static const char *_gbz80_rgblinkCmd[] = +{ + "xlink", "-tg", "-n\"$1.sym\"", "-m\"$1.map\"", "-zFF", "\"$1.lnk\"", NULL }; +static void +_gbz80_rgblink (void) +{ + FILE *lnkfile; + + /* first we need to create the .lnk file */ + sprintf (scratchFileName, "%s.lnk", dstFileName); + if (!(lnkfile = fopen (scratchFileName, "w"))) + { + werror (E_FILE_OPEN_ERR, scratchFileName); + exit (1); + } + + fprintf (lnkfile, "[Objects]\n"); + + fprintf (lnkfile, "%s.o\n", dstFileName); + + fputStrSet(lnkfile, relFilesSet); + + fprintf (lnkfile, "\n[Libraries]\n"); + /* additional libraries if any */ + fputStrSet(lnkfile, libFilesSet); + + fprintf (lnkfile, "\n[Output]\n" "%s.gb", dstFileName); + + fclose (lnkfile); + + buildCmdLine (buffer,port->linker.cmd, dstFileName, NULL, NULL, NULL); + /* call the linker */ + if (my_system (buffer)) + { + perror ("Cannot exec linker"); + exit (1); + } +} + +static bool +_parseOptions (int *pargc, char **argv, int *i) +{ + if (argv[*i][0] == '-') + { + if (argv[*i][1] == 'b' && IS_GB) + { + int bank = atoi (argv[*i] + 3); + char buffer[128]; + switch (argv[*i][2]) + { + case 'o': + /* ROM bank */ + sprintf (buffer, "CODE_%u", bank); + gbz80_port.mem.code_name = Safe_strdup (buffer); + return TRUE; + case 'a': + /* RAM bank */ + sprintf (buffer, "DATA_%u", bank); + gbz80_port.mem.data_name = Safe_strdup (buffer); + return TRUE; + } + } + else if (!strncmp (argv[*i], "--asm=", 6)) + { + if (!strcmp (argv[*i], "--asm=rgbds")) + { + asm_addTree (&_rgbds_gb); + gbz80_port.assembler.cmd = _gbz80_rgbasmCmd; + gbz80_port.linker.cmd = _gbz80_rgblinkCmd; + gbz80_port.linker.do_link = _gbz80_rgblink; + _G.asmType = ASM_TYPE_RGBDS; + return TRUE; + } + else if (!strcmp (argv[*i], "--asm=asxxxx")) + { + _G.asmType = ASM_TYPE_ASXXXX; + return TRUE; + } + else if (!strcmp (argv[*i], "--asm=isas")) + { + asm_addTree (&_isas_gb); + /* Munge the function prefix */ + gbz80_port.fun_prefix = ""; + _G.asmType = ASM_TYPE_ISAS; + return TRUE; + } + else if (!strcmp (argv[*i], "--asm=z80asm")) + { + port->assembler.externGlobal = TRUE; + asm_addTree (&_z80asm_z80); + _G.asmType = ASM_TYPE_ISAS; + return TRUE; + } + } + else if (!strncmp (argv[*i], "--portmode=", 11)) + { + if (!strcmp (argv[*i], "--portmode=z80")) + { + z80_opts.port_mode = 80; + return TRUE; + } + else if (!strcmp (argv[*i], "--portmode=z180")) + { + z80_opts.port_mode = 180; + return TRUE; + } + } + } + return FALSE; +} + +static void +_setValues(void) +{ + const char *s; + + if (options.nostdlib == FALSE) + { + const char *s; + char path[PATH_MAX]; + struct dbuf_s dbuf; + + dbuf_init(&dbuf, PATH_MAX); + + for (s = setFirstItem(libDirsSet); s != NULL; s = setNextItem(libDirsSet)) + { + buildCmdLine2(path, sizeof path, "-k\"%s" DIR_SEPARATOR_STRING "{port}\" ", s); + dbuf_append(&dbuf, path, strlen(path)); + } + buildCmdLine2(path, sizeof path, "-l\"{port}.lib\"", s); + dbuf_append(&dbuf, path, strlen(path)); + + setMainValue ("z80libspec", dbuf_c_str(&dbuf)); + dbuf_destroy(&dbuf); + + for (s = setFirstItem(libDirsSet); s != NULL; s = setNextItem(libDirsSet)) + { + struct stat stat_buf; + + buildCmdLine2(path, sizeof path, "%s" DIR_SEPARATOR_STRING "{port}" DIR_SEPARATOR_STRING "crt0{objext}", s); + if (stat(path, &stat_buf) == 0) + break; + } + + if (s == NULL) + setMainValue ("z80crt0", "\"crt0{objext}\""); + else + { + char *buf; + size_t len = strlen(path) + 3; + + buf = Safe_alloc(len); + SNPRINTF(buf, len, "\"%s\"", path); + setMainValue("z80crt0", buf); + Safe_free(buf); + } + } + else + { + setMainValue ("z80libspec", ""); + setMainValue ("z80crt0", ""); + } + + setMainValue ("z80extralibfiles", (s = joinStrSet(libFilesSet))); + Safe_free((void *)s); + setMainValue ("z80extralibpaths", (s = joinStrSet(libPathsSet))); + Safe_free((void *)s); + + if (IS_GB) + { + setMainValue ("z80outputtypeflag", "-z"); + setMainValue ("z80outext", ".gb"); + } + else + { + setMainValue ("z80outputtypeflag", "-i"); + setMainValue ("z80outext", ".ihx"); + } + + setMainValue ("stdobjdstfilename" , "{dstfilename}{objext}"); + setMainValue ("stdlinkdstfilename", "{dstfilename}{z80outext}"); + + setMainValue ("z80extraobj", (s = joinStrSet(relFilesSet))); + Safe_free((void *)s); + + sprintf (buffer, "-b_CODE=0x%04X -b_DATA=0x%04X", options.code_loc, options.data_loc); + setMainValue ("z80bases", buffer); +} + +static void +_finaliseOptions (void) +{ + port->mem.default_local_map = data; + port->mem.default_globl_map = data; + if (_G.asmType == ASM_TYPE_ASXXXX && IS_GB) + asm_addTree (&_asxxxx_gb); + + _setValues(); +} + +static void +_setDefaultOptions (void) +{ + options.nopeep = 0; + options.stackAuto = 1; + options.mainreturn = 1; + /* first the options part */ + options.intlong_rent = 1; + options.float_rent = 1; + options.noRegParams = 1; + /* Default code and data locations. */ + options.code_loc = 0x200; + + if (IS_GB) + { + options.data_loc = 0xC000; + } + else + { + options.data_loc = 0x8000; + } + + optimize.global_cse = 1; + optimize.label1 = 1; + optimize.label2 = 1; + optimize.label3 = 1; + optimize.label4 = 1; + optimize.loopInvariant = 1; + optimize.loopInduction = 1; +} + +/* Mangaling format: + _fun_policy_params + where: + policy is the function policy + params is the parameter format + + policy format: + rsp + where: + r is 'r' for reentrant, 's' for static functions + s is 'c' for callee saves, 'r' for caller saves + p is 'p' for profiling on, 'x' for profiling off + examples: + rr - reentrant, caller saves + params format: + A combination of register short names and s to signify stack variables. + examples: + bds - first two args appear in BC and DE, the rest on the stack + s - all arguments are on the stack. +*/ +static char * +_mangleSupportFunctionName(char *original) +{ + char buffer[128]; + + sprintf(buffer, "%s_rr%s_%s", original, + options.profile ? "f" : "x", + options.noRegParams ? "s" : "bds" + ); + + return Safe_strdup(buffer); +} + +static const char * +_getRegName (struct regs *reg) +{ + if (reg) + { + return reg->name; + } + /* assert (0); */ + return "err"; +} + +static bool +_hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right) +{ + sym_link *test = NULL; + value *val; + + if ( ic->op != '*') + { + return FALSE; + } + + if ( IS_LITERAL (left)) + { + test = left; + val = OP_VALUE (IC_LEFT (ic)); + } + else if ( IS_LITERAL (right)) + { + test = left; + val = OP_VALUE (IC_RIGHT (ic)); + } + else + { + return FALSE; + } + + if ( getSize (test) <= 2) + { + return TRUE; + } + + return FALSE; +} + +/* Indicate which extended bit operations this port supports */ +static bool +hasExtBitOp (int op, int size) +{ + if (op == GETHBIT) + return TRUE; + else + return FALSE; +} + +/* Indicate the expense of an access to an output storage class */ +static int +oclsExpense (struct memmap *oclass) +{ + if (IN_FARSPACE(oclass)) + return 1; + + return 0; +} + + +#define LINKCMD "link-{port} -nf {dstfilename}" +/* +#define LINKCMD \ + "link-{port} -n -c -- {z80bases} -m -j" \ + " {z80libspec}" \ + " {z80extralibfiles} {z80extralibpaths}" \ + " {z80outputtypeflag} \"{linkdstfilename}\"" \ + " {z80crt0}" \ + " \"{dstfilename}{objext}\"" \ + " {z80extraobj}" +*/ + +#define ASMCMD \ + "as-{port} -plosgff \"{objdstfilename}\" \"{dstfilename}{asmext}\"" + /* Globals */ -PORT z80_port = { - "z80", - "Zilog Z80", /* Target name */ - { - _asmCmd, - "-plosgff", /* Options with debug */ - "-plosgff", /* Options without debug */ - }, - { - _linkCmd - }, - { - /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */ - 1, 1, 2, 4, 2, 2, 2, 1, 4, 4 - }, - { - "_XSEG", - "_STACK", - "_CODE", - "_DATA", - "_ISEG", - "_XSEG", - "_BSEG", - "_RSEG", - "_GSINIT", - "_OVERLAY" - }, - { - -1, 0, 0, 8, 0 - }, +PORT z80_port = +{ + TARGET_ID_Z80, + "z80", + "Zilog Z80", /* Target name */ + NULL, /* Processor name */ + { + glue, + FALSE, + MODEL_MEDIUM | MODEL_SMALL, + MODEL_SMALL + }, + { + NULL, + ASMCMD, + "-plosgff", /* Options with debug */ + "-plosgff", /* Options without debug */ + 0, + ".asm" + }, + { + NULL, + LINKCMD, + NULL, + ".o", + 1 + }, + { + _z80_defaultRules + }, + { + /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */ + 1, 2, 2, 4, 2, 2, 2, 1, 4, 4 + }, + { + "XSEG", + "STACK", + "CODE", + "DATA", + "ISEG", + NULL, /* pdata */ + "XSEG", + "BSEG", + "RSEG", + "GSINIT", + "OVERLAY", + "GSFINAL", + "HOME", + NULL, /* xidata */ + NULL, /* xinit */ + NULL, /* const_name */ + NULL, + NULL, + 1 + }, + { NULL, NULL }, + { + -1, 0, 0, 4, 0, 2 + }, /* Z80 has no native mul/div commands */ - { - 0 - }, - _z80_parseOptions, - _z80_finaliseOptions, - _z80_setDefaultOptions, - z80_assignRegisters, - _z80_getRegName, - _z80_keywords + { + 0, 2 + }, + { + z80_emitDebuggerSymbol + }, + { + 255, /* maxCount */ + 3, /* sizeofElement */ + /* The rest of these costs are bogus. They approximate */ + /* the behavior of src/SDCCicode.c 1.207 and earlier. */ + {4,4,4}, /* sizeofMatchJump[] */ + {0,0,0}, /* sizeofRangeCompare[] */ + 0, /* sizeofSubtract */ + 3, /* sizeofDispatch */ + }, + "_", + _z80_init, + _parseOptions, + _z80_options, + NULL, + _finaliseOptions, + _setDefaultOptions, + z80_assignRegisters, + _getRegName, + _keywords, + 0, /* no assembler preamble */ + NULL, /* no genAssemblerEnd */ + 0, /* no local IVT generation code */ + 0, /* no genXINIT code */ + NULL, /* genInitStartup */ + _reset_regparm, + _reg_parm, + _process_pragma, + _mangleSupportFunctionName, + _hasNativeMulFor, + hasExtBitOp, /* hasExtBitOp */ + oclsExpense, /* oclsExpense */ + TRUE, + TRUE, /* little endian */ + 0, /* leave lt */ + 0, /* leave gt */ + 1, /* transform <= to ! > */ + 1, /* transform >= to ! < */ + 1, /* transform != to !(a == b) */ + 0, /* leave == */ + TRUE, /* Array initializer support. */ + 0, /* no CSE cost estimation yet */ + _z80_builtins, /* no builtin functions */ + GPOINTER, /* treat unqualified pointers as "generic" pointers */ + 1, /* reset labelKey to 1 */ + 1, /* globals & local static allowed */ + PORT_MAGIC }; +/* Globals */ +PORT gbz80_port = +{ + TARGET_ID_GBZ80, + "gbz80", + "Gameboy Z80-like", /* Target name */ + NULL, + { + glue, + FALSE, + MODEL_MEDIUM | MODEL_SMALL, + MODEL_SMALL + }, + { + NULL, + ASMCMD, + "-plosgff", /* Options with debug */ + "-plosgff", /* Options without debug */ + 0, + ".asm", + NULL /* no do_assemble function */ + }, + { + NULL, + LINKCMD, + NULL, + ".o", + 1 + }, + { + _gbz80_defaultRules + }, + { + /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */ + 1, 2, 2, 4, 2, 2, 2, 1, 4, 4 + }, + { + "XSEG", + "STACK", + "CODE", + "DATA", + "ISEG", + NULL, /* pdata */ + "XSEG", + "BSEG", + "RSEG", + "GSINIT", + "OVERLAY", + "GSFINAL", + "HOME", + NULL, /* xidata */ + NULL, /* xinit */ + NULL, /* const_name */ + NULL, + NULL, + 1 + }, + { NULL, NULL }, + { + -1, 0, 0, 2, 0, 4 + }, + /* gbZ80 has no native mul/div commands */ + { + 0, 2 + }, + { + z80_emitDebuggerSymbol + }, + { + 255, /* maxCount */ + 3, /* sizeofElement */ + /* The rest of these costs are bogus. They approximate */ + /* the behavior of src/SDCCicode.c 1.207 and earlier. */ + {4,4,4}, /* sizeofMatchJump[] */ + {0,0,0}, /* sizeofRangeCompare[] */ + 0, /* sizeofSubtract */ + 3, /* sizeofDispatch */ + }, + "_", + _gbz80_init, + _parseOptions, + _gbz80_options, + NULL, + _finaliseOptions, + _setDefaultOptions, + z80_assignRegisters, + _getRegName, + _keywords, + 0, /* no assembler preamble */ + NULL, /* no genAssemblerEnd */ + 0, /* no local IVT generation code */ + 0, /* no genXINIT code */ + NULL, /* genInitStartup */ + _reset_regparm, + _reg_parm, + _process_pragma, + _mangleSupportFunctionName, + _hasNativeMulFor, + hasExtBitOp, /* hasExtBitOp */ + oclsExpense, /* oclsExpense */ + TRUE, + TRUE, /* little endian */ + 0, /* leave lt */ + 0, /* leave gt */ + 1, /* transform <= to ! > */ + 1, /* transform >= to ! < */ + 1, /* transform != to !(a == b) */ + 0, /* leave == */ + TRUE, /* Array initializer support. */ + 0, /* no CSE cost estimation yet */ + NULL, /* no builtin functions */ + GPOINTER, /* treat unqualified pointers as "generic" pointers */ + 1, /* reset labelKey to 1 */ + 1, /* globals & local static allowed */ + PORT_MAGIC +};