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authormidipix <writeonce@midipix.org>2015-12-23 00:53:59 -0500
committermidipix <writeonce@midipix.org>2016-11-11 00:22:31 -0500
commitf455847564c7cb6a7a95c451351cd0ff2adb8a31 (patch)
tree01f6e5343f397bdd26580939a88f6867f7676db1 /src
parent6848b7f8ed9521f9c4c36b62d4d204e693194cee (diff)
downloadmdso-f455847564c7cb6a7a95c451351cd0ff2adb8a31.tar.bz2
mdso-f455847564c7cb6a7a95c451351cd0ff2adb8a31.tar.xz
mdso_generate_dsometa(): initial implementation.
Diffstat (limited to 'src')
-rw-r--r--src/logic/mdso_generate_dsometa.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/logic/mdso_generate_dsometa.c b/src/logic/mdso_generate_dsometa.c
new file mode 100644
index 0000000..80a3b8c
--- /dev/null
+++ b/src/logic/mdso_generate_dsometa.c
@@ -0,0 +1,67 @@
+/****************************************************************/
+/* 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_hdr_lines[] = {
+ "\t.file \"__%s_dso_meta.s\"\n",
+
+ "\t.section " MDSO_META_SECTION ",\"r\"\n",
+ "\t.globl .__dsometa_%s\n",
+ 0
+};
+
+static const char * const asm_meta_lines[] = {
+ "\t.long\t0 # priority\n",
+ "\t.long\t0 # nsyms\n",
+ "\t.long\t0 # padding\n",
+ "\t%s\t0 # hashtbl\n",
+ "\t%s\t0 # symtbl\n",
+ "\t%s\t0 # fncarg\n",
+ "\t%s\t0 # fncargarr\n",
+ "\t%s\t0 # fnr1\n",
+ "\t%s\t0 # fnr2\n",
+ 0
+};
+
+int mdso_generate_dsometa(
+ const struct mdso_common_ctx * cctx,
+ 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_hdr_lines; *line; line++)
+ if ((fprintf(fout,*line,cctx->libname)) < 0)
+ return -1;
+
+ if ((fputs(alignstr,fout)) < 0)
+ return -1;
+
+ if ((fprintf(fout,"\t%s\t%d\t# base\n",ptrsize,0)) < 0)
+ return -1;
+
+ if ((fprintf(fout,"\t%s\t%d\t# flags\n",".long",cctx->dsoflags)) < 0)
+ return -1;
+
+ for (line=asm_meta_lines; *line; line++)
+ if ((fprintf(fout,*line,ptrsize)) < 0)
+ return -1;
+
+ return 0;
+}