AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

microblaze: Do not use r0_ram space for syscall debugging

Browse Source 
Remove syscall counting space from r0_ram. Use special
syscall_debug_table pool for syscall statistic.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2011-01-31 15:04:43 +01:00
parent 495162dfef
commit d8748e73e8
1 changed files with 16 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
arch/microblaze/kernel/entry.S
View File

@ -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, r12, 0x400 + r0_ram
swi r3, r0, syscall_debug_table
lwi r3, r12, syscall_debug_table
addi r3, r3, 1
swi r3, r12, syscall_debug_table
#endif
# Find and jump into the syscall handler.