Create NaCl specific frame inner detection function.
GDB compares frame pointers to detect incorrect frame. We have to
create NaCl specific function that ignores base address. This is
need since PNaCl erases base address from stack frames.
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3600
TEST= none
Review URL: https://codereview.chromium.org/22590004
diff --git a/gdb/nacl-tdep.c b/gdb/nacl-tdep.c
index 0032c20..7039b2c 100644
--- a/gdb/nacl-tdep.c
+++ b/gdb/nacl-tdep.c
@@ -184,6 +184,12 @@
return frame_id_build (fp, get_frame_pc (this_frame));
}
+static int
+amd64_nacl_inner_than (CORE_ADDR lhs, CORE_ADDR rhs)
+{
+ return (uint32_t)lhs < (uint32_t)rhs;
+}
+
static void
amd64_nacl_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
@@ -217,6 +223,7 @@
set_gdbarch_addr_bits_remove (gdbarch, amd64_nacl_addr_bits_remove);
set_gdbarch_unwind_pc (gdbarch, amd64_nacl_unwind_pc);
set_gdbarch_unwind_sp (gdbarch, amd64_nacl_unwind_sp);
+ set_gdbarch_inner_than (gdbarch, amd64_nacl_inner_than);
/* Where to set breakpoints. */
set_gdbarch_adjust_breakpoint_address (gdbarch,
