diff options
Diffstat (limited to 'target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S')
| -rw-r--r-- | target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S new file mode 100644 index 000000000..eaca5921c --- /dev/null +++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S @@ -0,0 +1,29 @@ +#include <mach/mcs814x.h> + .macro disable_fiq + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =mcs814x_intc_base @ base virtual address of AIC peripheral + ldr \base, [\base] + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mov \tmp, #MCS814X_IRQ_STS0 @ load tmp with STS0 register offset + ldr \irqstat, [\base, \tmp] @ load value at base + tmp + tst \irqstat, \irqstat @ test if no active IRQ's + beq 1002f @ if no active irqs return with status 0 + mov \irqnr, #0 @ start from irq zero + mov \tmp, #1 @ the mask initially 1 +1001: + tst \irqstat, \tmp @ and with mask + addeq \irqnr, \irqnr, #1 @ if zero then add one to nr + moveq \tmp, \tmp, lsl #1 @ shift mask one to left + beq 1001b @ if zero then loop again + mov \irqstat, \tmp @ save the return mask + mov \tmp, #MCS814X_IRQ_STS0 @ load tmp with ICR offset + str \irqstat, [\base, \tmp] @ clear irq with selected mask +1002: + .endm |