Changeset 40cb845e in mainline for uspace/lib/libc/arch/amd64

Timestamp:

2009-12-30T19:21:45Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

a7a0417

Parents:

26b50cb (diff), f0452536 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge the stack tracing branch.

So far, only userspace stack tracing on amd64, ia32 and sparc64 is supported.
Other architectures have dummy support.

Location:

uspace/lib/libc/arch/amd64

Files:

• Makefile.inc (modified) (1 diff)
• include/fibril.h (modified) (1 diff)
• src/entry.s (modified) (1 diff)
• src/stacktrace.S (added)
• src/thread_entry.s (modified) (1 diff)

uspace/lib/libc/arch/amd64/Makefile.inc

@@ -36 +36 @@
 ARCH_SOURCES += arch/$(UARCH)/src/syscall.S \
         arch/$(UARCH)/src/fibril.S \
-        arch/$(UARCH)/src/tls.c
+        arch/$(UARCH)/src/tls.c \
+        arch/$(UARCH)/src/stacktrace.S
 
+GCC_CFLAGS += -fno-omit-frame-pointer
 LFLAGS += -N
 

uspace/lib/libc/arch/amd64/include/fibril.h

@@ -44 +44 @@
 #define SP_DELTA     16
 
+#define context_set(c, _pc, stack, size, ptls) \
+        do { \
+                (c)->pc = (sysarg_t) (_pc); \
+                (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
+                (c)->tls = (sysarg_t) (ptls); \
+                (c)->rbp = 0; \
+        } while (0)
+
 /* We include only registers that must be preserved
  * during function call

uspace/lib/libc/arch/amd64/src/entry.s

@@ -38 +38 @@
 #
 __entry:
+        #
+        # Create the first stack frame.
+        #
+        pushq $0
+        mov %rsp, %rbp
+        
         # %rdi was deliberately chosen as the first argument is also in %rdi
         # Pass PCB pointer to __main (no operation)

uspace/lib/libc/arch/amd64/src/thread_entry.s

@@ -36 +36 @@
 __thread_entry:
         #
+        # Create the first stack frame.
+        #
+        pushq $0
+        movq %rsp, %rbp
+
+        #
         # RAX contains address of uarg
         #