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/**********************************************************/
/* apimagic: cparser-based API normalization utility */
/* Copyright (C) 2015--2016 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.APIMAGIC. */
/**********************************************************/
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <cparser/driver/c_driver.h>
#include <cparser/driver/driver.h>
#include <cparser/driver/driver_t.h>
#include <cparser/driver/target.h>
#include <cparser/driver/tempfile.h>
#include <cparser/firm/ast2firm.h>
#include <cparser/firm/firm_opt.h>
#include <cparser/parser/parser.h>
#include <cparser/parser/preprocessor.h>
#define ARGV_DRIVER
#include <apimagic/apimagic.h>
#include "apimagic_driver_impl.h"
#include "argv/argv.h"
extern const struct argv_option amgc_default_options[];
struct amgc_driver_ctx_alloc {
struct argv_meta * meta;
struct amgc_driver_ctx_impl ctx;
uint64_t guard;
const char * units[];
};
static uint32_t amgc_argv_flags(uint32_t flags)
{
uint32_t ret = 0;
if (flags & AMGC_DRIVER_VERBOSITY_NONE)
ret |= ARGV_VERBOSITY_NONE;
if (flags & AMGC_DRIVER_VERBOSITY_ERRORS)
ret |= ARGV_VERBOSITY_ERRORS;
if (flags & AMGC_DRIVER_VERBOSITY_STATUS)
ret |= ARGV_VERBOSITY_STATUS;
return ret;
}
static int amgc_driver_usage(
const char * program,
const char * arg,
const struct argv_option * options,
struct argv_meta * meta)
{
char header[512];
snprintf(header,sizeof(header),
"Usage: %s [options] <file>...\n" "Options:\n",
program);
argv_usage(stdout,header,options,arg);
argv_free(meta);
return AMGC_USAGE;
}
static struct amgc_driver_ctx_impl * amgc_driver_ctx_alloc(
struct argv_meta * meta,
const struct amgc_common_ctx * cctx,
size_t nunits)
{
struct amgc_driver_ctx_alloc * ictx;
size_t size;
struct argv_entry * entry;
const char ** units;
size = sizeof(struct amgc_driver_ctx_alloc);
size += (nunits+1)*sizeof(const char *);
if (!(ictx = calloc(size,1)))
return 0;
if (cctx)
memcpy(&ictx->ctx.cctx,cctx,sizeof(*cctx));
for (entry=meta->entries,units=ictx->units; entry->fopt || entry->arg; entry++)
if (!entry->fopt)
*units++ = entry->arg;
ictx->meta = meta;
ictx->ctx.fdtmpin = -1;
ictx->ctx.ctx.units = ictx->units;
return &ictx->ctx;
}
static int amgc_get_driver_ctx_fail(struct argv_meta * meta)
{
argv_free(meta);
return -1;
}
static int amgc_init_cparser(void)
{
init_temp_files();
init_default_driver();
init_driver();
init_preprocessor();
init_parser();
init_ast();
init_gen_firm();
target_set_defaults();
target_setup();
return 0;
}
int amgc_get_driver_ctx(
const char ** argv,
const char ** envp,
uint32_t flags,
struct amgc_driver_ctx ** pctx)
{
struct amgc_driver_ctx_impl * ctx;
struct amgc_common_ctx cctx;
const struct argv_option * options;
struct argv_meta * meta;
struct argv_entry * entry;
size_t nunits;
const char * program;
options = amgc_default_options;
if (!(meta = argv_get(argv,options,amgc_argv_flags(flags))))
return -1;
nunits = 0;
program = argv_program_name(argv[0]);
memset(&cctx,0,sizeof(cctx));
if (!argv[1] && (flags & AMGC_DRIVER_VERBOSITY_USAGE))
return amgc_driver_usage(program,0,options,meta);
/* compiler defaults */
cctx.std = STANDARD_C99;
/* get options, count units */
for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
if (entry->fopt) {
switch (entry->tag) {
case TAG_HELP:
if (flags & AMGC_DRIVER_VERBOSITY_USAGE)
return amgc_driver_usage(program,entry->arg,options,meta);
case TAG_VERSION:
cctx.drvflags |= AMGC_DRIVER_VERSION;
break;
case TAG_LANG_STD:
cctx.std = amgc_lang_std_from_string(entry->arg);
break;
}
} else
nunits++;
}
if (amgc_init_cparser())
return amgc_get_driver_ctx_fail(meta);
if (!(ctx = amgc_driver_ctx_alloc(meta,&cctx,nunits)))
return amgc_get_driver_ctx_fail(meta);
ctx->ctx.program = program;
ctx->ctx.cctx = &ctx->cctx;
ctx->cctx.ccenv = &ctx->ccenv;
*pctx = &ctx->ctx;
return AMGC_OK;
}
int amgc_create_driver_ctx(
const struct amgc_common_ctx * cctx,
struct amgc_driver_ctx ** pctx)
{
struct argv_meta * meta;
struct amgc_driver_ctx_impl * ctx;
const char * argv[] = {"apimagic_driver",0};
if (!(meta = argv_get(argv,amgc_default_options,0)))
return -1;
if (!(ctx = amgc_driver_ctx_alloc(meta,cctx,0)))
return amgc_get_driver_ctx_fail(0);
ctx->ctx.cctx = &ctx->cctx;
memcpy(&ctx->cctx,cctx,sizeof(*cctx));
*pctx = &ctx->ctx;
return AMGC_OK;
}
static void amgc_exit_cparser(void)
{
exit_gen_firm();
exit_ast2firm();
exit_ast();
exit_parser();
exit_preprocessor();
exit_driver();
exit_default_driver();
exit_temp_files();
}
static void amgc_free_driver_ctx_impl(struct amgc_driver_ctx_alloc * ictx)
{
argv_free(ictx->meta);
free(ictx);
amgc_exit_cparser();
}
void amgc_free_driver_ctx(struct amgc_driver_ctx * ctx)
{
struct amgc_driver_ctx_alloc * ictx;
uintptr_t addr;
if (ctx) {
addr = (uintptr_t)ctx - offsetof(struct amgc_driver_ctx_alloc,ctx);
addr = addr - offsetof(struct amgc_driver_ctx_impl,ctx);
ictx = (struct amgc_driver_ctx_alloc *)addr;
amgc_free_driver_ctx_impl(ictx);
}
}
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