mdso_generate_symentry(): initial implementation.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/logic/mdso_generate_symentry.c b/src/logic/mdso_generate_symentry.c
new file mode 100644
index 0000000..df55186
--- /dev/null
+++ b/src/logic/mdso_generate_symentry.c
@@ -0,0 +1,60 @@
+/****************************************************************/
+/*  mdso: midipix dso scavenger                                 */
+/*  Copyright (C) 2015  Z. Gilboa                               */
+/*  Released under GPLv2 and GPLv3; see COPYING.MDSO.           */
+/****************************************************************/
+
+#include <stdint.h>
+#include <stdio.h>
+#include <mdso/mdso.h>
+#include <mdso/mdso_specs.h>
+
+static const char * const asm_lines[] = {
+	"\t.file     \"__%s_sym_entry.s\"\n",
+
+	"\t.section  " MDSO_STRS_SECTION ",\"r\"\n",
+	"\t.globl    .__dsostr_%s\n",
+	"\t.balign   2\n\n",
+	".__dsostr_%s:\n",
+	"\t.ascii\t\"%s\\0\"\n\n"
+
+	"\t.section  " MDSO_SYMS_SECTION ",\"r\"\n",
+	"\t.globl    __imp_%s\n",
+	0
+};
+
+int mdso_generate_symentry(
+	const struct mdso_common_ctx *	cctx,
+	const char *			sym,
+	FILE *				fout)
+{
+	const char * const *	line;
+	const char *		alignstr;
+	const char *		ptrsize;
+
+	if (cctx->drvflags & MDSO_DRIVER_QUAD_PTR) {
+		alignstr = "\t.balign   16\n\n";
+		ptrsize  = ".quad";
+	} else {
+		alignstr = "\t.balign   8\n\n";
+		ptrsize  = ".long";
+	}
+
+	for (line=asm_lines; *line; line++)
+		if ((fprintf(fout,*line,sym)) < 0)
+			return -1;
+
+	if ((fputs(alignstr,fout)) < 0)
+		return -1;
+
+	if ((fprintf(fout,"__imp_%s:\n",sym)) < 0)
+		return -1;
+
+	if ((fprintf(fout,"\t%s\t.__dsostr_%s\n",ptrsize,sym)) < 0)
+		return -1;
+
+	if ((fprintf(fout,"\t%s\t.__dsometa_%s\n",ptrsize,cctx->libname)) < 0)
+		return -1;
+
+	return 0;
+}