ARM: 6511/1: ftrace: add ARM support for C version of recordmcount

Depending on the compiler version, ARM GCC calls the mcount function
either __gnu_mcount_nc or mcount.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 1 deletions

diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index ac6e51ceed50..038b3d1e2981 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -38,6 +38,7 @@ static void *ehdr_curr; /* current ElfXX_Ehdr *  for resource cleanup */
 static char gpfx;       /* prefix for global symbol name (sometimes '_') */
 static struct stat sb;  /* Remember .st_size, etc. */
 static jmp_buf jmpenv;  /* setjmp/longjmp per-file error escape */
+static const char *altmcount;   /* alternate mcount symbol name */
 
 /* setjmp() return values */
 enum {
@@ -299,7 +300,9 @@ do_file(char const *const fname)
                 fail_file();
         } break;
         case EM_386:     reltype = R_386_32;                   break;
-        case EM_ARM:     reltype = R_ARM_ABS32;                break;
+        case EM_ARM:     reltype = R_ARM_ABS32;
+                         altmcount = "__gnu_mcount_nc";
+                         break;
         case EM_IA_64:   reltype = R_IA64_IMM64;   gpfx = '_'; break;
         case EM_MIPS:    /* reltype: e_class    */ gpfx = '_'; break;
         case EM_PPC:     reltype = R_PPC_ADDR32;   gpfx = '_'; break;