ARM: arm920t: Allow use of 'gd' pointer from IRQ

This patch allows us to use the 'gd' pointer (and thus environment
and everything else associated with it) from interrupt context on
arm920t.

Signed-off-by: Harald Welte <laforge@openmoko.org>

diff --git a/cpu/arm920t/start.S b/cpu/arm920t/start.S
index aefcdd1552fb051c432b6a643f2c3d02219e980f..ae86002a8f33fc4819a7fc7a2c80ba21bf68d6ef 100644 (file)
--- a/cpu/arm920t/start.S
+++ b/cpu/arm920t/start.S
@@ -329,12 +329,12 @@ cpu_init_crit:
        .macro  irq_save_user_regs
        sub     sp, sp, #S_FRAME_SIZE
        stmia   sp, {r0 - r12}                  @ Calling r0-r12
-       add     r8, sp, #S_PC
-       stmdb   r8, {sp, lr}^                   @ Calling SP, LR
-       str     lr, [r8, #0]                    @ Save calling PC
+       add     r7, sp, #S_PC
+       stmdb   r7, {sp, lr}^                   @ Calling SP, LR
+       str     lr, [r7, #0]                    @ Save calling PC
        mrs     r6, spsr
-       str     r6, [r8, #4]                    @ Save CPSR
-       str     r0, [r8, #8]                    @ Save OLD_R0
+       str     r6, [r7, #4]                    @ Save CPSR
+       str     r0, [r7, #8]                    @ Save OLD_R0
        mov     r0, sp
        .endm