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arm: g_current_regs is only used to determine if we are in irq, #13444

Merged
merged 4 commits into from
Sep 25, 2024
Merged

arm: g_current_regs is only used to determine if we are in irq, #13444

merged 4 commits into from
Sep 25, 2024

Commits on Sep 24, 2024

  1. arm: g_current_regs is only used to determine if we are in irq, 

    with other functionalities removed.

reason:
by doing this we can reduce context switch time,
When we exit from an interrupt handler, we directly use tcb->xcp.regs

before
size nuttx
   text    data     bss     dec     hex filename
 225920     409   30925  257254   3ece6 nuttx

after
   text    data     bss     dec     hex filename
 225604     409   30925  256938   3ebaa nuttx

 szie change -316

Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Sep 24, 2024
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  2. arm: tc32 nested interrupts are not supported 

    Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Sep 24, 2024
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  3. irq: use up_interrupt_context to replace up_current_regs 

    Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Sep 24, 2024
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  4. arm64: g_current_regs is only used to determine if we are in irq, 

    with other functionalities removed.

Signed-off-by: hujun5 <[email protected]>
    @hujun260
    hujun260 committed Sep 24, 2024
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