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arc: Fix comment about IRQ call stack

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The code density registers are NOT saved on the stack.
This is controlled by bit 13 in AUX_IRQ_CTRL, which didn't even have a symbol
defined for it. I've also added _ARC_V2_AUX_IRQ_CTRL_LP for bit 13.

Change-Id: Ie80853b72bed4e60a5cf1cf0a8c905a3d86180d9
Signed-off-by: Chuck Jordan <cjordan@synopsys.com>
This commit is contained in:
Chuck Jordan 2016-10-07 11:51:41 -07:00 • committed by Anas Nashif
commit df4c0acd2d
2 changed files with 7 additions and 4 deletions
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10
arch/arc/core/isr_wrapper.S
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@ -61,9 +61,6 @@ IRQ stack frame layout:
status32
pc
[jli_base]
[ldi_base]
[ei_base]
lp_count
lp_start
lp_end
@ -74,7 +71,12 @@ IRQ stack frame layout:
low address
[registers not taken into account in the current implementation]
Registers not taken into account in the current implementation.
jli_base
ldi_base
ei_base
accl
acch
The context switch code adopts this standard so that it is easier to follow:

1
arch/arc/include/v2/irq.h
View file

@ -31,6 +31,7 @@ extern "C" {
#define _ARC_V2_AUX_IRQ_CTRL_BLINK (1 << 9)
#define _ARC_V2_AUX_IRQ_CTRL_LOOP_REGS (1 << 10)
#define _ARC_V2_AUX_IRQ_CTRL_LP (1 << 13)
#define _ARC_V2_AUX_IRQ_CTRL_14_REGS 7
#define _ARC_V2_AUX_IRQ_CTRL_16_REGS 8
#define _ARC_V2_AUX_IRQ_CTRL_32_REGS 16