From 43c8c9ee36f661fa9e4895350f80f43be3814b74 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Tue, 29 Dec 2015 12:43:48 -0500
Subject: driver: generate ast for each unit upon unit context creation.

---
 include/apimagic/apimagic.h         |  4 ++++
 src/driver/amgc_driver_ctx.c        |  5 +++++
 src/driver/amgc_unit_ctx.c          | 45 ++++++++++++++++++++++++++++++++++++-
 src/internal/apimagic_driver_impl.h |  2 ++
 4 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/include/apimagic/apimagic.h b/include/apimagic/apimagic.h
index e1ddfb3..f2e7bf5 100644
--- a/include/apimagic/apimagic.h
+++ b/include/apimagic/apimagic.h
@@ -4,6 +4,8 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#include <cparser/driver/driver_t.h>
+
 #include "apimagic_api.h"
 
 #ifdef __cplusplus
@@ -48,6 +50,7 @@ struct amgc_common_ctx {
 	uint64_t			drvflags;
 	uint64_t			actflags;
 	uint64_t			fmtflags;
+	struct compilation_env_t *	ccenv;
 };
 
 struct amgc_driver_ctx {
@@ -64,6 +67,7 @@ struct amgc_unit_ctx {
 	const char * const *		path;
 	const struct amgc_input *	map;
 	const struct amgc_common_ctx *	cctx;
+	const struct compilation_unit_t*ccunit;
 	void *				any;
 	int				status;
 	int				nerrors;
diff --git a/src/driver/amgc_driver_ctx.c b/src/driver/amgc_driver_ctx.c
index 35d3899..7bb59a9 100644
--- a/src/driver/amgc_driver_ctx.c
+++ b/src/driver/amgc_driver_ctx.c
@@ -10,6 +10,7 @@
 
 #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>
@@ -110,6 +111,9 @@ static int amgc_init_cparser(void)
 	init_ast();
 	init_gen_firm();
 
+	target_set_defaults();
+	target_setup();
+
 	return 0;
 }
 
@@ -163,6 +167,7 @@ int amgc_get_driver_ctx(
 
 	ctx->ctx.program	= program;
 	ctx->ctx.cctx		= &ctx->cctx;
+	ctx->cctx.ccenv		= &ctx->ccenv;
 
 	*pctx = &ctx->ctx;
 	return AMGC_OK;
diff --git a/src/driver/amgc_unit_ctx.c b/src/driver/amgc_unit_ctx.c
index 0498a68..aed0c65 100644
--- a/src/driver/amgc_unit_ctx.c
+++ b/src/driver/amgc_unit_ctx.c
@@ -12,6 +12,10 @@
 #include <errno.h>
 #include <sys/mman.h>
 
+
+#include <cparser/driver/driver.h>
+#include <cparser/driver/c_driver.h>
+
 #include <apimagic/apimagic.h>
 #include "apimagic_driver_impl.h"
 
@@ -77,6 +81,29 @@ static FILE * amgc_stdin_to_tmp(const struct amgc_driver_ctx * dctx)
 	return ftmp;
 }
 
+static bool amgc_cparser_no_op(
+	compilation_env_t *	env,
+	compilation_unit_t *	unit)
+{
+	return true;
+}
+
+static void amgc_init_cparser_unit(void)
+{
+	set_default_handlers();
+
+	/* parse only */
+	set_unit_handler(COMPILATION_UNIT_AST,
+			build_firm_ir,true);
+
+	/* assign no-op handler */
+	set_unit_handler(COMPILATION_UNIT_PREPROCESSED_ASSEMBLER,
+			amgc_cparser_no_op,true);
+
+	set_unit_handler(COMPILATION_UNIT_OBJECT,
+			amgc_cparser_no_op,true);
+}
+
 int amgc_get_unit_ctx(
 	const struct amgc_driver_ctx *	dctx,
 	const char *			path,
@@ -86,6 +113,8 @@ int amgc_get_unit_ctx(
 	FILE *				ftmp;
 	int				fd;
 
+	amgc_init_cparser_unit();
+
 	if (!dctx || !(ctx = calloc(sizeof(*ctx),1)))
 		return -1;
 
@@ -96,7 +125,7 @@ int amgc_get_unit_ctx(
 	else if ((fd = dup(fileno(ftmp))) < 0)
 		return amgc_free_unit_ctx_impl(ctx,-1);
 	else
-		fclose(ftmp);
+		ctx->ccunit.input = ftmp;
 
 	if (amgc_map_input(fd,path,PROT_READ,&ctx->map))
 		return amgc_free_unit_ctx_impl(ctx,-1);
@@ -104,6 +133,19 @@ int amgc_get_unit_ctx(
 	if (fd > 0)
 		close(fd);
 
+	/* compilation unit */
+	ctx->ccunit.name		= path;
+	ctx->ccunit.original_name	= path;
+	ctx->ccunit.type		= COMPILATION_UNIT_C;
+	ctx->ccunit.standard		= STANDARD_C99;
+
+	/* parse, generate ast, generate ir */
+	if ((process_unit(ctx->cctx.ccenv,&ctx->ccunit)) == false) {
+		if (ctx->ccunit.input)
+			fclose(ctx->ccunit.input);
+		return amgc_free_unit_ctx_impl(ctx,-1);
+	}
+
 	memcpy(&ctx->cctx,dctx->cctx,
 		sizeof(ctx->cctx));
 
@@ -112,6 +154,7 @@ int amgc_get_unit_ctx(
 	ctx->uctx.path	= &ctx->path;
 	ctx->uctx.map	= &ctx->map;
 	ctx->uctx.cctx	= &ctx->cctx;
+	ctx->uctx.ccunit= &ctx->ccunit;
 
 	*pctx = &ctx->uctx;
 	return 0;
diff --git a/src/internal/apimagic_driver_impl.h b/src/internal/apimagic_driver_impl.h
index 9054708..ff33a4e 100644
--- a/src/internal/apimagic_driver_impl.h
+++ b/src/internal/apimagic_driver_impl.h
@@ -15,6 +15,7 @@ enum app_tags {
 struct amgc_driver_ctx_impl {
 	struct amgc_common_ctx	cctx;
 	struct amgc_driver_ctx	ctx;
+	struct compilation_env_t	ccenv;
 	int			fdtmpin;
 };
 
@@ -23,6 +24,7 @@ struct amgc_unit_ctx_impl {
 	struct amgc_input	map;
 	struct amgc_common_ctx	cctx;
 	struct amgc_unit_ctx	uctx;
+	struct compilation_unit_t	ccunit;
 };
 
 #endif
-- 
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