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authorMichal Simek <monstr@monstr.eu>2011-01-31 15:04:43 +0100
committerMichal Simek <monstr@monstr.eu>2011-03-09 08:09:54 +0100
commitd8748e73e882106ff0ffa0fa2192dab111a9f9f8 (patch)
tree210ea8b6357c7c2302c514bdaad00142ed8aa71b /arch/microblaze
parent495162dfefe3f6e3a8e908aa2f0a964a572d3e87 (diff)
downloadop-kernel-dev-d8748e73e882106ff0ffa0fa2192dab111a9f9f8.zip
op-kernel-dev-d8748e73e882106ff0ffa0fa2192dab111a9f9f8.tar.gz
microblaze: Do not use r0_ram space for syscall debugging
Remove syscall counting space from r0_ram. Use special syscall_debug_table pool for syscall statistic. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/kernel/entry.S19
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index 41c30cd..5010f0b 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -39,6 +39,15 @@
/* The offset of the struct pt_regs in a `state save frame' on the stack. */
#define PTO STATE_SAVE_ARG_SPACE /* 24 the space for args */
+#ifdef DEBUG
+/* Create space for syscalls counting. */
+.section .data
+.global syscall_debug_table
+.align 4
+syscall_debug_table:
+ .space (__NR_syscalls * 4)
+#endif /* DEBUG */
+
#define C_ENTRY(name) .globl name; .align 4; name
/*
@@ -371,10 +380,14 @@ C_ENTRY(_user_exception):
add r12, r12, r12;
#ifdef DEBUG
- /* Trac syscalls and stored them to r0_ram */
- lwi r3, r12, 0x400 + r0_ram
+ /* Trac syscalls and stored them to syscall_debug_table */
+ /* The first syscall location stores total syscall number */
+ lwi r3, r0, syscall_debug_table
+ addi r3, r3, 1
+ swi r3, r0, syscall_debug_table
+ lwi r3, r12, syscall_debug_table
addi r3, r3, 1
- swi r3, r12, 0x400 + r0_ram
+ swi r3, r12, syscall_debug_table
#endif
# Find and jump into the syscall handler.
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