ref: b019b0394621c130f53c0db03372ea036700270f
dir: /src/link/parser.y/
/* * This file is part of RGBDS. * * Copyright (c) 2017-2018, Antonio Nino Diaz and RGBDS contributors. * * SPDX-License-Identifier: MIT */ %{ #include <stdint.h> #include <stdio.h> #include "extern/err.h" #include "link/script.h" int yylex(void); void yyerror(char *); extern int yylineno; %} %union { int32_t i; char s[512]; } %token<i> INTEGER %token<s> STRING %token<s> SECTION_NONBANKED %token<s> SECTION_BANKED %token COMMAND_ALIGN %token COMMAND_ORG %token COMMAND_INCLUDE %token NEWLINE %start lines %% lines: /* empty */ | lines line NEWLINE ; line: /* empty */ | statement ; statement: /* Statements to set the current section */ SECTION_NONBANKED { script_SetCurrentSectionType($1, 0); } | SECTION_NONBANKED INTEGER { script_fatalerror("Trying to assign a bank to a non-banked section.\n"); } | SECTION_BANKED { script_fatalerror("Banked section without assigned bank.\n"); } | SECTION_BANKED INTEGER { script_SetCurrentSectionType($1, $2); } /* Commands to adjust the address inside the current section */ | COMMAND_ALIGN INTEGER { script_SetAlignment($2); } | COMMAND_ALIGN { script_fatalerror("ALIGN keyword needs an argument.\n"); } | COMMAND_ORG INTEGER { script_SetAddress($2); } | COMMAND_ORG { script_fatalerror("ORG keyword needs an argument.\n"); } /* Section name */ | STRING { script_OutputSection($1); } /* Include file */ | COMMAND_INCLUDE STRING { script_IncludeFile($2); } /* End */ ; %% extern int yylex(void); extern int yyparse(void); int yywrap(void) { if (script_IncludeDepthGet() == 0) return 1; script_IncludePop(); return 0; } void yyerror(char *s) { script_fatalerror("Linkerscript parse error: \"%s\"\n", s); }