UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

microblaze: entry.S use delay slot for return handlers 

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-01-22 14:28:36 +01:00
parent 8633bebc63
commit 841d6e8c4e
1 changed files with 3 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/microblaze/kernel/entry.S
View File

@ -414,10 +414,9 @@ C_ENTRY(ret_from_trap):
beqi r11, 1f; /* Signals to handle, handle them */ beqi r11, 1f; /* Signals to handle, handle them */
la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
add r6, r0, r0; /* Arg 2: sigset_t *oldset */
addi r7, r0, 1; /* Arg 3: int in_syscall */ addi r7, r0, 1; /* Arg 3: int in_syscall */
bralid r15, do_signal; /* Handle any signals */ bralid r15, do_signal; /* Handle any signals */
nop; add r6, r0, r0; /* Arg 2: sigset_t *oldset */
/* Finally, return to user state. */ /* Finally, return to user state. */
1: 1:
@ -692,10 +691,9 @@ C_ENTRY(ret_from_exc):
* store return registers separately because this macros is use * store return registers separately because this macros is use
* for others exceptions */ * for others exceptions */
la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
add r6, r0, r0; /* Arg 2: sigset_t *oldset */
addi r7, r0, 0; /* Arg 3: int in_syscall */ addi r7, r0, 0; /* Arg 3: int in_syscall */
bralid r15, do_signal; /* Handle any signals */ bralid r15, do_signal; /* Handle any signals */
nop; add r6, r0, r0; /* Arg 2: sigset_t *oldset */
/* Finally, return to user state. */ /* Finally, return to user state. */
1: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ 1: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */
@ -968,10 +966,9 @@ dbtrap_call: rtbd r11, 0;
(in a possibly modified form) after do_signal returns. */ (in a possibly modified form) after do_signal returns. */
la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
add r6, r0, r0; /* Arg 2: sigset_t *oldset */
addi r7, r0, 0; /* Arg 3: int in_syscall */ addi r7, r0, 0; /* Arg 3: int in_syscall */
bralid r15, do_signal; /* Handle any signals */ bralid r15, do_signal; /* Handle any signals */
nop; add r6, r0, r0; /* Arg 2: sigset_t *oldset */
/* Finally, return to user state. */ /* Finally, return to user state. */