Changeset 47246f4 in mainline for uspace/lib/libc/arch/sparc64/src/stacktrace.S

Timestamp:

2009-12-30T18:34:15Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

01fda09

Parents:

ee2f1aae

Message:

Pair the stack frame address and the return address in a more meaningful way.
Also do the 'right' thing on sparc64 and recognize the end of the stack trace
by -0x7ff stored in %fp.

File:

• uspace/lib/libc/arch/sparc64/src/stacktrace.S (modified) (4 diffs)

uspace/lib/libc/arch/sparc64/src/stacktrace.S

@@ -27 +27 @@
 #
 
+#include <libarch/stack.h>
+
 .text
 
@@ -33 +35 @@
 .global frame_pointer_validate
 .global return_address_get
+.global program_counter_get
 
 frame_pointer_get:
         # Add the stack bias to %sp to get the actual address.
         retl
-        add %sp, 0x7ff, %o0
+        add %sp, STACK_BIAS, %o0
 
 frame_pointer_prev:
-        save %sp, -176, %sp
+        save %sp, -(STACK_WINDOW_SAVE_AREA_SIZE+STACK_ARG_SAVE_AREA_SIZE), %sp
         # Flush all other windows to memory so that we can read their contents.
         flushw
@@ -46 +49 @@
         ldx [%i0 + 14 * 8], %i0
         # Add the stack bias to the %fp read from the window save area.
-        add %i0, 0x7ff, %i0
+        add %i0, STACK_BIAS, %i0
         ret
         restore
 
 frame_pointer_validate:
-        #
-        # Fall through - we detect the last frame in the trace by zero %i7.
-        #
+        retl
+        nop
 
 return_address_get:
-        save %sp, -176, %sp
+        save %sp, -(STACK_WINDOW_SAVE_AREA_SIZE+STACK_ARG_SAVE_AREA_SIZE), %sp
         # Flush all other windows to memory so that we can read their contents.
         flushw
@@ -63 +65 @@
         ret
         restore
+
+program_counter_get:
+        retl
+        mov %o7, %o0
+