ref: c20ac350746b318e6399b1bb11d1ad7800263bef
dir: /src/asm/main.c/
/*
* This file is part of RGBDS.
*
* Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
*
* SPDX-License-Identifier: MIT
*/
#include <ctype.h>
#include <errno.h>
#include <float.h>
#include <inttypes.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "asm/charmap.h"
#include "asm/fstack.h"
#include "asm/lexer.h"
#include "asm/main.h"
#include "asm/output.h"
#include "asm/rpn.h"
#include "asm/symbol.h"
#include "asm/warning.h"
#include "parser.h"
#include "extern/err.h"
#include "extern/getopt.h"
#include "helpers.h"
#include "version.h"
// Old Bison versions (confirmed for 2.3) do not forward-declare `yyparse` in the generated header
// Unfortunately, macOS still ships 2.3, which is from 2008...
int yyparse(void);
size_t cldefines_index;
size_t cldefines_numindices;
size_t cldefines_bufsize;
const size_t cldefine_entrysize = 2 * sizeof(void *);
char **cldefines;
clock_t nStartClock, nEndClock;
uint32_t nTotalLines, nIFDepth;
#if defined(YYDEBUG) && YYDEBUG
extern int yydebug;
#endif
FILE * dependfile;
bool oGeneratedMissingIncludes;
bool oFailedOnMissingInclude;
bool oGeneratePhonyDeps;
char *tzTargetFileName;
/*
* Option stack
*/
struct sOptions DefaultOptions;
struct sOptions CurrentOptions;
bool haltnop;
bool optimizeloads;
bool verbose;
bool warnings; /* True to enable warnings, false to disable them. */
struct sOptionStackEntry {
struct sOptions Options;
struct sOptionStackEntry *next;
};
struct sOptionStackEntry *pOptionStack;
void opt_SetCurrentOptions(struct sOptions *opt)
{
CurrentOptions = *opt;
lexer_SetGfxDigits(CurrentOptions.gbgfx);
lexer_SetBinDigits(CurrentOptions.binary);
}
void opt_Parse(char *s)
{
struct sOptions newopt;
newopt = CurrentOptions;
switch (s[0]) {
case 'g':
if (strlen(&s[1]) == 4) {
newopt.gbgfx[0] = s[1];
newopt.gbgfx[1] = s[2];
newopt.gbgfx[2] = s[3];
newopt.gbgfx[3] = s[4];
} else {
error("Must specify exactly 4 characters for option 'g'\n");
}
break;
case 'b':
if (strlen(&s[1]) == 2) {
newopt.binary[0] = s[1];
newopt.binary[1] = s[2];
} else {
error("Must specify exactly 2 characters for option 'b'\n");
}
break;
case 'z':
warning(WARNING_OBSOLETE, "Option 'z' is a deprecated alias for 'p'\n");
/* fallthrough */
case 'p':
if (strlen(&s[1]) <= 2) {
int result;
unsigned int fillchar;
result = sscanf(&s[1], "%x", &fillchar);
if (result != EOF && result != 1)
error("Invalid argument for option 'z'\n");
else
newopt.fillchar = fillchar;
} else {
error("Invalid argument for option 'z'\n");
}
break;
default:
error("Unknown option\n");
break;
}
opt_SetCurrentOptions(&newopt);
}
void opt_Push(void)
{
struct sOptionStackEntry *pOpt;
pOpt = malloc(sizeof(struct sOptionStackEntry));
if (pOpt == NULL)
fatalerror("No memory for option stack\n");
pOpt->Options = CurrentOptions;
pOpt->next = pOptionStack;
pOptionStack = pOpt;
}
void opt_Pop(void)
{
if (pOptionStack == NULL)
fatalerror("No entries in the option stack\n");
struct sOptionStackEntry *pOpt;
pOpt = pOptionStack;
opt_SetCurrentOptions(&(pOpt->Options));
pOptionStack = pOpt->next;
free(pOpt);
}
void opt_AddDefine(char *s)
{
char *value, *equals;
if (cldefines_index >= cldefines_numindices) {
/* Check for overflows */
if ((cldefines_numindices * 2) < cldefines_numindices)
fatalerror("No memory for command line defines\n");
if ((cldefines_bufsize * 2) < cldefines_bufsize)
fatalerror("No memory for command line defines\n");
cldefines_numindices *= 2;
cldefines_bufsize *= 2;
cldefines = realloc(cldefines, cldefines_bufsize);
if (!cldefines)
fatalerror("No memory for command line defines\n");
}
equals = strchr(s, '=');
if (equals) {
*equals = '\0';
value = equals + 1;
} else {
value = "1";
}
cldefines[cldefines_index++] = s;
cldefines[cldefines_index++] = value;
}
static void opt_ParseDefines(void)
{
uint32_t i;
for (i = 0; i < cldefines_index; i += 2)
sym_AddString(cldefines[i], cldefines[i + 1]);
}
/* Escapes Make-special chars from a string */
static char *make_escape(const char *str)
{
char * const escaped_str = malloc(strlen(str) * 2 + 1);
char *dest = escaped_str;
if (escaped_str == NULL)
err(1, "%s: Failed to allocate memory", __func__);
while (*str) {
/* All dollars needs to be doubled */
if (*str == '$')
*dest++ = '$';
*dest++ = *str++;
}
*dest = '\0';
return escaped_str;
}
/* Short options */
static const char *optstring = "b:D:Eg:hi:LM:o:p:r:VvW:w";
/* Variables for the long-only options */
static int depType; /* Variants of `-M` */
/*
* Equivalent long options
* Please keep in the same order as short opts
*
* Also, make sure long opts don't create ambiguity:
* A long opt's name should start with the same letter as its short opt,
* except if it doesn't create any ambiguity (`verbose` versus `version`).
* This is because long opt matching, even to a single char, is prioritized
* over short opt matching
*/
static struct option const longopts[] = {
{ "binary-digits", required_argument, NULL, 'b' },
{ "define", required_argument, NULL, 'D' },
{ "export-all", no_argument, NULL, 'E' },
{ "gfx-chars", required_argument, NULL, 'g' },
{ "halt-without-nop", no_argument, NULL, 'h' },
{ "include", required_argument, NULL, 'i' },
{ "preserve-ld", no_argument, NULL, 'L' },
{ "dependfile", required_argument, NULL, 'M' },
{ "MG", no_argument, &depType, 'G' },
{ "MP", no_argument, &depType, 'P' },
{ "MT", required_argument, &depType, 'T' },
{ "MQ", required_argument, &depType, 'Q' },
{ "output", required_argument, NULL, 'o' },
{ "pad-value", required_argument, NULL, 'p' },
{ "recursion-depth", required_argument, NULL, 'r' },
{ "version", no_argument, NULL, 'V' },
{ "verbose", no_argument, NULL, 'v' },
{ "warning", required_argument, NULL, 'W' },
{ NULL, no_argument, NULL, 0 }
};
static void print_usage(void)
{
fputs(
"Usage: rgbasm [-EhLVvw] [-b chars] [-D name[=value]] [-g chars] [-i path]\n"
" [-M depend_file] [-MG] [-MP] [-MT target_file] [-MQ target_file]\n"
" [-o out_file] [-p pad_value] [-r depth] [-W warning] <file> ...\n"
"Useful options:\n"
" -E, --export-all export all labels\n"
" -M, --dependfile <path> set the output dependency file\n"
" -o, --output <path> set the output object file\n"
" -p, --pad-value <value> set the value to use for `ds'\n"
" -V, --version print RGBASM version and exit\n"
" -W, --warning <warning> enable or disable warnings\n"
"\n"
"For help, use `man rgbasm' or go to https://rgbds.gbdev.io/docs/\n",
stderr);
exit(1);
}
int main(int argc, char *argv[])
{
int ch;
char *ep;
struct sOptions newopt;
char *tzMainfile;
time_t now = time(NULL);
char *sourceDateEpoch = getenv("SOURCE_DATE_EPOCH");
/*
* Support SOURCE_DATE_EPOCH for reproducible builds
* https://reproducible-builds.org/docs/source-date-epoch/
*/
if (sourceDateEpoch)
now = (time_t)strtoul(sourceDateEpoch, NULL, 0);
dependfile = NULL;
/* Initial number of allocated elements in array */
cldefines_numindices = 32;
cldefines_bufsize = cldefines_numindices * cldefine_entrysize;
cldefines = malloc(cldefines_bufsize);
if (!cldefines)
fatalerror("No memory for command line defines\n");
#if defined(YYDEBUG) && YYDEBUG
yydebug = 1;
#endif
oGeneratePhonyDeps = false;
oGeneratedMissingIncludes = false;
oFailedOnMissingInclude = false;
tzTargetFileName = NULL;
uint32_t maxRecursionDepth = 64;
size_t nTargetFileNameLen = 0;
DefaultOptions.gbgfx[0] = '0';
DefaultOptions.gbgfx[1] = '1';
DefaultOptions.gbgfx[2] = '2';
DefaultOptions.gbgfx[3] = '3';
DefaultOptions.binary[0] = '0';
DefaultOptions.binary[1] = '1';
DefaultOptions.fillchar = 0;
optimizeloads = true;
haltnop = true;
verbose = false;
warnings = true;
bool exportall = false;
opt_SetCurrentOptions(&DefaultOptions);
newopt = CurrentOptions;
while ((ch = musl_getopt_long_only(argc, argv, optstring, longopts,
NULL)) != -1) {
switch (ch) {
case 'b':
if (strlen(optarg) == 2) {
newopt.binary[0] = optarg[1];
newopt.binary[1] = optarg[2];
} else {
errx(1, "Must specify exactly 2 characters for option 'b'");
}
break;
case 'D':
opt_AddDefine(optarg);
break;
case 'E':
exportall = true;
break;
case 'g':
if (strlen(optarg) == 4) {
newopt.gbgfx[0] = optarg[1];
newopt.gbgfx[1] = optarg[2];
newopt.gbgfx[2] = optarg[3];
newopt.gbgfx[3] = optarg[4];
} else {
errx(1, "Must specify exactly 4 characters for option 'g'");
}
break;
case 'h':
haltnop = false;
break;
case 'i':
fstk_AddIncludePath(optarg);
break;
case 'L':
optimizeloads = false;
break;
case 'M':
if (!strcmp("-", optarg))
dependfile = stdout;
else
dependfile = fopen(optarg, "w");
if (dependfile == NULL)
err(1, "Could not open dependfile %s",
optarg);
break;
case 'o':
out_SetFileName(optarg);
break;
case 'p':
newopt.fillchar = strtoul(optarg, &ep, 0);
if (optarg[0] == '\0' || *ep != '\0')
errx(1, "Invalid argument for option 'p'");
if (newopt.fillchar < 0 || newopt.fillchar > 0xFF)
errx(1, "Argument for option 'p' must be between 0 and 0xFF");
break;
case 'r':
maxRecursionDepth = strtoul(optarg, &ep, 0);
if (optarg[0] == '\0' || *ep != '\0')
errx(1, "Invalid argument for option 'r'");
break;
case 'V':
printf("rgbasm %s\n", get_package_version_string());
exit(0);
case 'v':
verbose = true;
break;
case 'W':
processWarningFlag(optarg);
break;
case 'w':
warnings = false;
break;
/* Long-only options */
case 0:
switch (depType) {
case 'G':
oGeneratedMissingIncludes = true;
break;
case 'P':
oGeneratePhonyDeps = true;
break;
case 'Q':
case 'T':
if (optind == argc)
errx(1, "-M%c takes a target file name argument",
depType);
ep = optarg;
if (depType == 'Q')
ep = make_escape(ep);
nTargetFileNameLen += strlen(ep) + 1;
if (!tzTargetFileName) {
/* On first alloc, make an empty str */
tzTargetFileName =
malloc(nTargetFileNameLen + 1);
if (tzTargetFileName)
*tzTargetFileName = '\0';
} else {
tzTargetFileName =
realloc(tzTargetFileName,
nTargetFileNameLen + 1);
}
if (tzTargetFileName == NULL)
err(1, "Cannot append new file to target file list");
strcat(tzTargetFileName, ep);
if (depType == 'Q')
free(ep);
char *ptr = tzTargetFileName +
strlen(tzTargetFileName);
*ptr++ = ' ';
*ptr = '\0';
break;
}
break;
/* Unrecognized options */
default:
print_usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (tzTargetFileName == NULL)
tzTargetFileName = tzObjectname;
opt_SetCurrentOptions(&newopt);
DefaultOptions = CurrentOptions;
if (argc == 0) {
fputs("FATAL: no input files\n", stderr);
print_usage();
}
tzMainfile = argv[argc - 1];
if (verbose)
printf("Assembling %s\n", tzMainfile);
if (dependfile) {
if (!tzTargetFileName)
errx(1, "Dependency files can only be created if a target file is specified with either -o, -MQ or -MT.\n");
fprintf(dependfile, "%s: %s\n", tzTargetFileName, tzMainfile);
}
/* Init file stack; important to do first, since it provides the file name, line, etc */
lexer_Init();
fstk_Init(tzMainfile, maxRecursionDepth);
nStartClock = clock();
nTotalLines = 0;
nIFDepth = 0;
sym_Init(now);
sym_SetExportAll(exportall);
opt_ParseDefines();
charmap_New("main", NULL);
opt_SetCurrentOptions(&DefaultOptions);
if (yyparse() != 0 || nbErrors != 0)
errx(1, "Assembly aborted (%u errors)!", nbErrors);
if (dependfile)
fclose(dependfile);
if (nIFDepth != 0)
errx(1, "Unterminated IF construct (%" PRIu32 " levels)!",
nIFDepth);
sect_CheckUnionClosed();
double timespent;
nEndClock = clock();
timespent = ((double)(nEndClock - nStartClock))
/ (double)CLOCKS_PER_SEC;
if (verbose) {
printf("Success! %" PRIu32 " lines in %d.%02d seconds ",
nTotalLines, (int)timespent,
((int)(timespent * 100.0)) % 100);
if (timespent < FLT_MIN_EXP)
printf("(INFINITY lines/minute)\n");
else
printf("(%d lines/minute)\n",
(int)(60 / timespent * nTotalLines));
}
if (oFailedOnMissingInclude)
return 0;
/* If no path specified, don't write file */
if (tzObjectname != NULL)
out_WriteObject();
return 0;
}