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xen/arm32: entry: Consolidate DEFINE_TRAP_ENTRY_* macros
The only difference between all the DEFINE_TRAP_ENTRY_* macros are the interrupts (Asynchronous Abort, IRQ, FIQ) unmasked. Rather than duplicating the code, introduce __DEFINE_TRAP_ENTRY macro that will take the list of interrupts to unmask. This is part of XSA-254. Signed-off-by: Julien Grall <julien.grall@linaro.org> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Julien Grall authored and Stefano Stabellini committed
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6827606030
commit
3bd8fd751e
1 file changed
+13
-23
+13
-23
@@ -111,39 +111,29 @@ abort_guest_exit_end:
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skip_check:
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mov pc, lr
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#define DEFINE_TRAP_ENTRY(trap) \
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/*
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* Macro to define trap entry. The iflags corresponds to the list of
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* interrupts (Asynchronous Abort, IRQ, FIQ) to unmask.
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*/
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#define __DEFINE_TRAP_ENTRY(trap, iflags) \
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ALIGN; \
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trap_##trap: \
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SAVE_ALL; \
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cpsie i; /* local_irq_enable */ \
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cpsie a; /* asynchronous abort enable */ \
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cpsie iflags; \
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adr lr, return_from_trap; \
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mov r0, sp; \
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mov r11, sp; \
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bic sp, #7; /* Align the stack pointer (noop on guest trap) */ \
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b do_trap_##trap
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#define DEFINE_TRAP_ENTRY_NOIRQ(trap) \
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ALIGN; \
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trap_##trap: \
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SAVE_ALL; \
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cpsie a; /* asynchronous abort enable */ \
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adr lr, return_from_trap; \
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mov r0, sp; \
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mov r11, sp; \
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bic sp, #7; /* Align the stack pointer (noop on guest trap) */ \
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b do_trap_##trap
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/* Trap handler which unmask IRQ/Abort, keep FIQ masked */
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#define DEFINE_TRAP_ENTRY(trap) __DEFINE_TRAP_ENTRY(trap, ai)
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#define DEFINE_TRAP_ENTRY_NOABORT(trap) \
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ALIGN; \
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trap_##trap: \
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SAVE_ALL; \
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cpsie i; /* local_irq_enable */ \
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adr lr, return_from_trap; \
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mov r0, sp; \
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mov r11, sp; \
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bic sp, #7; /* Align the stack pointer (noop on guest trap) */ \
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b do_trap_##trap
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/* Trap handler which unmask Abort, keep IRQ/FIQ masked */
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#define DEFINE_TRAP_ENTRY_NOIRQ(trap) __DEFINE_TRAP_ENTRY(trap, a)
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/* Trap handler which unmask IRQ, keep Abort/FIQ masked */
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#define DEFINE_TRAP_ENTRY_NOABORT(trap) __DEFINE_TRAP_ENTRY(trap, i)
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.align 5
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GLOBAL(hyp_traps_vector)
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