driver: utility api: added mdso_create_implib_objects().

7 files changed, 117 insertions, 6 deletions

diff --git a/src/driver/mdso_amain.c b/src/driver/mdso_amain.c
index b85a568..629b606 100644
--- a/src/driver/mdso_amain.c
+++ b/src/driver/mdso_amain.c
@@ -81,6 +81,9 @@ int mdso_main(int argc, char ** argv, char ** envp)
 	if (dctx->cctx->drvflags & MDSO_DRIVER_GENERATE_ASM)
 		mdso_create_implib_sources(dctx);
 
+	if (dctx->cctx->drvflags & MDSO_DRIVER_GENERATE_OBJECTS)
+		mdso_create_implib_objects(dctx);
+
 	for (unit=dctx->units; *unit && !dctx->errv[0]; unit++) {
 		if (!(mdso_get_unit_ctx(dctx,*unit,&uctx))) {
 			mdso_perform_unit_actions(dctx,uctx);
diff --git a/src/driver/mdso_driver_ctx.c b/src/driver/mdso_driver_ctx.c
index 1c96911..3decf70 100644
--- a/src/driver/mdso_driver_ctx.c
+++ b/src/driver/mdso_driver_ctx.c
@@ -196,6 +196,10 @@ int mdso_get_driver_ctx(
 					cctx.drvflags |= MDSO_DRIVER_GENERATE_ASM;
 					break;
 
+				case TAG_OBJ:
+					cctx.drvflags |= MDSO_DRIVER_GENERATE_OBJECTS;
+					break;
+
 				case TAG_QUAD_PTR:
 					if (!(strcmp(entry->arg,"64")))
 						cctx.drvflags |= MDSO_DRIVER_QUAD_PTR;
diff --git a/src/helper/mdso_create_asm_source.c b/src/helper/mdso_create_asm_source.c
index 85aaaba..b152697 100644
--- a/src/helper/mdso_create_asm_source.c
+++ b/src/helper/mdso_create_asm_source.c
@@ -15,22 +15,19 @@
 #include "mdso_driver_impl.h"
 #include "mdso_errinfo_impl.h"
 
-FILE * mdso_create_asm_source(
+static FILE * mdso_create_output(
 	const struct mdso_driver_ctx *	dctx,
-	const char *			asmname)
+	const char *			name)
 {
 	struct mdso_driver_ctx_impl *	ictx;
 	uintptr_t			addr;
 	int				fdout;
 	FILE *				fout;
 
-	if (!dctx->cctx->dstdir)
-		return stdout;
-
 	addr = (uintptr_t)dctx - offsetof(struct mdso_driver_ctx_impl,ctx);
 	ictx = (struct mdso_driver_ctx_impl *)addr;
 
-	if ((fdout = openat(ictx->fddst,asmname,
+	if ((fdout = openat(ictx->fddst,name,
                         O_CREAT|O_TRUNC|O_WRONLY|O_NOCTTY|O_NOFOLLOW,
                         S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) {
 		MDSO_SYSTEM_ERROR(dctx);
@@ -45,3 +42,25 @@ FILE * mdso_create_asm_source(
 
 	return fout;
 }
+
+FILE * mdso_create_asm_source(
+	const struct mdso_driver_ctx *	dctx,
+	const char *			asmname)
+{
+	if (!dctx->cctx->dstdir)
+		return stdout;
+
+	return mdso_create_output(dctx,asmname);
+}
+
+FILE * mdso_create_object(
+	const struct mdso_driver_ctx *	dctx,
+	const char *			objname)
+{
+	if (!dctx->cctx->dstdir) {
+		MDSO_CUSTOM_ERROR(dctx,MDSO_ERR_INVALID_DSTDIR);
+		return 0;
+	}
+
+	return mdso_create_output(dctx,objname);
+}
diff --git a/src/internal/mdso_driver_impl.h b/src/internal/mdso_driver_impl.h
index 5e260f8..ffeae9d 100644
--- a/src/internal/mdso_driver_impl.h
+++ b/src/internal/mdso_driver_impl.h
@@ -16,6 +16,7 @@ enum app_tags {
 	TAG_HELP,
 	TAG_VERSION,
 	TAG_ASM,
+	TAG_OBJ,
 	TAG_QUAD_PTR,
 	TAG_LIBPATH,
 	TAG_LIBNAME,
diff --git a/src/object/mdso_create_implib_objects.c b/src/object/mdso_create_implib_objects.c
new file mode 100644
index 0000000..dd681e0
--- /dev/null
+++ b/src/object/mdso_create_implib_objects.c
@@ -0,0 +1,79 @@
+/****************************************************************/
+/*  mdso: midipix dso scavenger                                 */
+/*  Copyright (C) 2015--2017  Z. Gilboa                         */
+/*  Released under GPLv2 and GPLv3; see COPYING.MDSO.           */
+/****************************************************************/
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <mdso/mdso.h>
+#include "mdso_errinfo_impl.h"
+
+static void mdso_init_objname(char * buf, const char * fmt, const char * str)
+{
+	char			hexstr[24];
+	long long unsigned int	crc64;
+
+	if (strlen(str) + strlen(fmt) > (PATH_MAX - 1)) {
+		crc64 = mdso_crc64_mbstr((const unsigned char *)str,0);
+		sprintf(hexstr,"%llx",crc64);
+		sprintf(buf,fmt,hexstr);
+	} else
+		sprintf(buf,fmt,str);
+}
+
+mdso_api int  mdso_create_implib_objects(const struct mdso_driver_ctx * dctx)
+{
+	struct mdso_unit_ctx *	uctx;
+	const char **		unit;
+	FILE *			fout;
+	char			objname[PATH_MAX];
+	const char * const *	sym;
+	int			ret;
+
+	mdso_init_objname(objname,".dsometa_%s.o",dctx->cctx->libname);
+
+	if (!(fout = mdso_create_object(dctx,objname)))
+		return MDSO_NESTED_ERROR(dctx);
+
+	ret = mdso_objgen_dsometa(dctx,fout,0);
+	fclose(fout);
+
+	if (ret < 0)
+		return MDSO_NESTED_ERROR(dctx);
+
+	for (unit=dctx->units; *unit; unit++) {
+		if (mdso_get_unit_ctx(dctx,*unit,&uctx))
+			return MDSO_NESTED_ERROR(dctx);
+
+		for (sym=uctx->syms; *sym; sym++) {
+			mdso_init_objname(objname,".%s_symentry.o",*sym);
+
+			if (!(fout = mdso_create_object(dctx,objname)))
+				return MDSO_NESTED_ERROR(dctx);
+
+			ret = mdso_objgen_symentry(dctx,*sym,fout,0);
+			fclose(fout);
+
+			if (ret < 0)
+				return MDSO_NESTED_ERROR(dctx);
+
+			mdso_init_objname(objname,".%s_symfn.o",*sym);
+
+			if (!(fout = mdso_create_object(dctx,objname)))
+				return MDSO_NESTED_ERROR(dctx);
+
+			ret = mdso_objgen_symfn(dctx,*sym,fout,0);
+			fclose(fout);
+
+			if (ret < 0)
+				return MDSO_NESTED_ERROR(dctx);
+		}
+
+		mdso_free_unit_ctx(uctx);
+	}
+
+	return 0;
+}
diff --git a/src/output/mdso_output_error.c b/src/output/mdso_output_error.c
index 53974fc..08d66dc 100644
--- a/src/output/mdso_output_error.c
+++ b/src/output/mdso_output_error.c
@@ -23,6 +23,8 @@ static const char const * const mdso_error_strings[MDSO_ERR_CAP] = {
 	[MDSO_ERR_FLEE_ERROR]       = "flees and bugs and cats and mice",
 	[MDSO_ERR_NULL_CONTEXT]     = "null driver or unit context",
 	[MDSO_ERR_NULL_SOURCE]      = "source file does not define any symbols",
+	[MDSO_ERR_INVALID_DATA]     = "invalid data (symbol name too long)",
+	[MDSO_ERR_INVALID_DSTDIR]   = "invalid destination directory",
 	[MDSO_ERR_INVALID_CONTEXT]  = "invalid driver or unit context",
 	[MDSO_ERR_INVALID_SOURCE]   = "invalid symbol definition source file",
 	[MDSO_ERR_SOURCE_SIZE_ZERO] = "cannot map an empty symbol definition source file",
diff --git a/src/skin/mdso_skin_default.c b/src/skin/mdso_skin_default.c
index e7ad452..1c0151e 100644
--- a/src/skin/mdso_skin_default.c
+++ b/src/skin/mdso_skin_default.c
@@ -11,6 +11,9 @@ const struct argv_option mdso_default_options[] = {
 	{"asm",			'a',TAG_ASM,ARGV_OPTARG_NONE,0,0,0,
 				"generate assembly sources"},
 
+	{"obj",			'b',TAG_OBJ,ARGV_OPTARG_NONE,0,0,0,
+				"generate objects"},
+
 	{"machine",		'm',TAG_QUAD_PTR,ARGV_OPTARG_REQUIRED,0,"32|64",0,
 				"set machine bits to %s"},