Support ELF.

Submitted by:	Doug Rabson <dfr@calcaphon.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/devel/mprof/files/patch-02 b/devel/mprof/files/patch-02
new file mode 100644
index 0000000..03ce455
--- /dev/null
+++ b/devel/mprof/files/patch-02
@@ -0,0 +1,129 @@
+--- mprof.c.orig	Tue Apr 20 21:36:20 1993
++++ mprof.c	Wed Nov 25 14:20:44 1998
+@@ -8,6 +8,9 @@
+ #include	<stdio.h>
+ #include	<sys/file.h>
+ #include	<ctype.h>
++#ifdef __ELF__
++#include	<elf.h>
++#endif
+ #include	<a.out.h>
+ #include	<stab.h>
+ #include 	"mprof.h"
+@@ -699,6 +702,108 @@
+ st_read(exec_name)
+ char	*exec_name;
+ {
++#ifdef __ELF__
++    int		elf_file = open(exec_name, (O_RDONLY));
++    Elf_Ehdr	ehdr;
++    Elf_Shdr	shdr, shstrhdr, symhdr, strhdr, stabhdr, stabstrhdr;
++    int		gotsym, gotstr, gotstab, gotstabstr;
++    char	*sh_strings;
++    char	*stab_strings;
++    Elf_Sym	asym;
++    extern char *index();
++    extern char *malloc();
++    char	*stmp;
++    int		string_size;
++    unsigned char type;
++    char	*fname;
++    int		i;
++    
++    read(elf_file, &ehdr, sizeof(ehdr));
++    if (!ehdr.e_shnum) {
++	fprintf(stdout, "st_read -- no symbols in executable\n");
++	exit(1);
++    }
++
++    /* read the section names */
++    lseek(elf_file, ehdr.e_shoff + ehdr.e_shstrndx * ehdr.e_shentsize, L_SET);
++    read(elf_file, &shstrhdr, ehdr.e_shentsize);
++    sh_strings = malloc(shstrhdr.sh_size);
++    lseek(elf_file, shstrhdr.sh_offset, L_SET);
++    read(elf_file, sh_strings, shstrhdr.sh_size);
++
++    /* find the stab sections */
++    gotsym = gotstr = 0;
++    for (i = 0; i < ehdr.e_shnum; i++) {
++	lseek(elf_file, ehdr.e_shoff + i * ehdr.e_shentsize, L_SET);
++	read(elf_file, &shdr, ehdr.e_shentsize);
++	if (!strcmp(sh_strings + shdr.sh_name, ".stab")) {
++	    stabhdr = shdr;
++	    gotstab = 1;
++	} else if (!strcmp(sh_strings + shdr.sh_name, ".stabstr")) {
++	    stabstrhdr = shdr;
++	    gotstabstr = 1;
++	} else if (shdr.sh_type == SHT_SYMTAB) {
++	    symhdr = shdr;
++	    gotsym = 1;
++	} else if (shdr.sh_type == SHT_STRTAB) {
++	    strhdr = shdr;
++	    gotstr = 1;
++	}
++    }
++    if (!gotsym || !gotstr) {
++	fprintf(stdout, "st_read -- no symbols in executable\n");
++	exit(1);
++    }
++
++    /* read in the string table
++     */
++    st_strings = malloc(strhdr.sh_size);
++    lseek(elf_file, strhdr.sh_offset, L_SET);
++    read(elf_file, st_strings, strhdr.sh_size);
++
++    if (gotstabstr) {
++	stab_strings = malloc(stabstrhdr.sh_size);
++	lseek(elf_file, stabstrhdr.sh_offset, L_SET);
++	read(elf_file, stab_strings, stabstrhdr.sh_size);
++    }
++
++    /* read in the symbols one at a time
++     */
++    lseek(elf_file, symhdr.sh_offset, L_SET);
++    for (i = 0; i < symhdr.sh_size / sizeof(Elf_Sym); i++) {
++	read(elf_file, &asym, sizeof(asym));
++	type = ELF_ST_TYPE(asym.st_info);
++	if (type == STT_FUNC) {
++	    /* here's a candidate for a function name
++	     */
++	    fname = (char *) (st_strings + asym.st_name);
++	    stab_name(stab_i) = fname;
++	    stab_addr(stab_i) = asym.st_value;
++	    stab_incr(stab_i);
++	}
++    }
++
++    /* read the stab sections to look for structures */
++    if (gotstab) {
++	struct nlist stab;
++	lseek(elf_file, stabhdr.sh_offset, L_SET);
++	for (i = 0; i < stabhdr.sh_size / sizeof(struct nlist); i++) {
++	    read(elf_file, &stab, sizeof(stab));
++	    if (stab.n_type == N_LSYM || stab.n_type == N_GSYM) {
++		st_read_structure((char *) (stab_strings + stab.n_un.n_strx));
++	    }
++	}
++    }
++
++    stab_name(stab_i) = "unknown";
++    stab_addr(stab_i) = stab_addr(stab_i - 1) + 0x10000;
++    stab_incr(stab_i);
++    stab_name(stab_i) = "end_marker";
++    stab_addr(stab_i) = 0xffffffff;
++    stab_incr(stab_i);
++    qsort(stab, stab_i, sizeof(struct finfo), stab_compare);
++    close(elf_file);
++#else
+     int		aout_file = open(exec_name, (O_RDONLY));
+     struct	exec	hdr;
+     struct	nlist	asym;
+@@ -772,6 +877,7 @@
+     stab_addr(stab_i) = 0xffffffff;
+     stab_incr(stab_i);
+     qsort(stab, stab_i, sizeof(struct finfo), stab_compare);
++#endif
+ }
+ 
+ void