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arch: aarch64: Branch SError vector table entry

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Each vector table entry has 128-bytes to host the vector code. This is
not always enough and in general it's better to branch to the actual
exception handler elsewhere in memory.

Move the SError entry to a branched code.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2020-11-09 14:17:28 +01:00 committed by Anas Nashif
parent a13e5d5584
commit 6d05c57781
1 changed files with 9 additions and 6 deletions
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15
arch/arm/core/aarch64/vector_table.S
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@ -95,12 +95,7 @@ SECTION_SUBSEC_FUNC(exc_vector_table,_vector_table_section,_vector_table)
/* Current EL with SPx / SError */
.align 7
z_arm64_enter_exc x0, x1
mov x1, sp
mov x0, #0 /* K_ERR_CPU_EXCEPTION */
b z_arm64_fatal_error
b z_arm64_serror
/* Lower EL using AArch64 / Synchronous */
.align 7
@ -134,3 +129,11 @@ SECTION_SUBSEC_FUNC(exc_vector_table,_vector_table_section,_vector_table)
.align 7
b .
GTEXT(z_arm64_serror)
SECTION_FUNC(TEXT, z_arm64_serror)
z_arm64_enter_exc x0, x1
mov x1, sp
mov x0, #0 /* K_ERR_CPU_EXCEPTION */
b z_arm64_fatal_error