output: pe_output_image_symbols(): initial implementation and integration.

1 files changed, 80 insertions, 0 deletions

diff --git a/src/output/pe_output_image_symbols.c b/src/output/pe_output_image_symbols.c
new file mode 100644
index 0000000..da4bf8c
--- /dev/null
+++ b/src/output/pe_output_image_symbols.c
@@ -0,0 +1,80 @@
+/***************************************************************/
+/*  perk: PE Resource Kit                                      */
+/*  Copyright (C) 2015--2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PERK.          */
+/***************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+
+#include <perk/perk.h>
+#include <perk/perk_output.h>
+#include "perk_reader_impl.h"
+#include "perk_errinfo_impl.h"
+
+int pe_output_image_symbols(
+	const struct pe_driver_ctx *	dctx,
+	const struct pe_image_meta *	meta,
+	FILE *				fout)
+{
+	unsigned			i,bias;
+	uint32_t			roffset;
+	struct pe_coff_sym_entry *	symtbl;
+	char				buf[24];
+	char *				mark;
+	const char *			name;
+	const char * 			dash = "";
+
+	if (!fout)
+		fout = stdout;
+
+	if (dctx->cctx->fmtflags & PERK_PRETTY_YAML) {
+		if (fputs("symbols:\n",fout) < 0)
+			return PERK_FILE_ERROR(dctx);
+
+		dash = "- ";
+	}
+
+	mark   = (char *)meta->image.addr;
+	symtbl = (struct pe_coff_sym_entry *)(mark + meta->coff.ptr_to_sym_tbl);
+
+	for (i=0,bias=0; i<meta->coff.num_of_syms; i++,bias=0) {
+		if (symtbl[i].storage_class[0] == PE_IMAGE_SYM_CLASS_FILE)
+			if (symtbl[i].num_of_aux_symbols[0])
+				if (!symtbl[i+1].value[0])
+					bias = 1;
+
+		i += bias;
+
+		if (!bias && (symtbl[i].storage_class[0] == PE_IMAGE_SYM_CLASS_FILE)
+				&& symtbl[i].num_of_aux_symbols[0]) {
+			memset(buf,0,sizeof(buf));
+			memcpy(buf,symtbl[i+1].name,sizeof(*symtbl));
+			name = buf;
+
+		} else if (symtbl[i].name[0]) {
+			memset(buf,0,sizeof(buf));
+			memcpy(buf,symtbl[i].name,sizeof(symtbl->name));
+			name = buf;
+
+		} else if (!symtbl[i].name[1] && !symtbl[i].name[2] && !symtbl[i].name[3]) {
+			roffset = pe_read_long(&symtbl[i].name[4]);
+			name    = (roffset < meta->coff.size_of_string_tbl)
+					? mark + meta->coff.ptr_to_string_tbl + roffset
+					: 0;
+		} else {
+			name = 0;
+		}
+
+		i -= bias;
+		i += symtbl[i].num_of_aux_symbols[0];
+
+
+		if (name) {
+			if (fprintf(fout,"%s%s\n",dash,name) < 0)
+				return PERK_FILE_ERROR(dctx);
+		}
+	}
+
+	return 0;
+}