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metag: ftrace support

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Add ftrace support for metag.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
James Hogan
2012-10-05 16:27:31 +01:00
parent 903b20ad68
commit 00512bdd45
7 changed files with 248 additions and 1 deletions
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13
scripts/recordmcount.c
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@@ -33,6 +33,13 @@
#include <string.h>
#include <unistd.h>
#ifndef EM_METAG
/* Remove this when these make it to the standard system elf.h. */
#define EM_METAG 174
#define R_METAG_ADDR32 2
#define R_METAG_NONE 3
#endif
static int fd_map; /* File descriptor for file being modified. */
static int mmap_failed; /* Boolean flag. */
static void *ehdr_curr; /* current ElfXX_Ehdr * for resource cleanup */
@@ -341,6 +348,12 @@ do_file(char const *const fname)
altmcount = "__gnu_mcount_nc";
break;
case EM_IA_64: reltype = R_IA64_IMM64; gpfx = '_'; break;
case EM_METAG: reltype = R_METAG_ADDR32;
altmcount = "_mcount_wrapper";
rel_type_nop = R_METAG_NONE;
/* We happen to have the same requirement as MIPS */
is_fake_mcount32 = MIPS32_is_fake_mcount;
break;
case EM_MIPS: /* reltype: e_class */ gpfx = '_'; break;
case EM_PPC: reltype = R_PPC_ADDR32; gpfx = '_'; break;
case EM_PPC64: reltype = R_PPC64_ADDR64; gpfx = '_'; break;