diff options
Diffstat (limited to 'include/asm-arm/arch-imx')
| -rw-r--r-- | include/asm-arm/arch-imx/entry-macro.S | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/include/asm-arm/arch-imx/entry-macro.S b/include/asm-arm/arch-imx/entry-macro.S index d8cbafa6cc49..0b84e81031c3 100644 --- a/include/asm-arm/arch-imx/entry-macro.S +++ b/include/asm-arm/arch-imx/entry-macro.S @@ -20,19 +20,13 @@ #define AITC_NIVECSR 0x40 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqstat, =IO_ADDRESS(IMX_AITC_BASE) + ldr \base, =IO_ADDRESS(IMX_AITC_BASE) @ Load offset & priority of the highest priority @ interrupt pending. - ldr \irqnr, [\irqstat, #AITC_NIVECSR] + ldr \irqstat, [\base, #AITC_NIVECSR] @ Shift off the priority leaving the offset or - @ "interrupt number" - mov \irqnr, \irqnr, lsr #16 - ldr \irqstat, =1 @ dummy compare - ldr \base, =0xFFFF // invalid interrupt - cmp \irqnr, \base - bne 1001f - ldr \irqstat, =0 -1001: - tst \irqstat, #1 @ to make the condition code = TRUE + @ "interrupt number", use arithmetic shift to + @ transform illegal source (0xffff) as -1 + mov \irqnr, \irqstat, asr #16 + adds \tmp, \irqnr, #1 .endm - |