kybaaz/linux-xiaomi-chiron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

xtensa: only build windowed register support code when needed

Browse source 
There's no need in window overflow/underflow/alloca exception handlers
or window spill code when neither kernel nor userspace support windowed
registers. Don't build or link it.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2021-07-26 07:32:55 -07:00
parent 09af39f649
commit da0a4e5c8f
7 changed files with 45 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
arch/xtensa/kernel/vmlinux.lds.S
View file

@ -94,7 +94,9 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
_vecbase = .;
#ifdef SUPPORT_WINDOWED
SECTION_VECTOR2 (.WindowVectors.text, WINDOW_VECTORS_VADDR)
#endif
#if XCHAL_EXCM_LEVEL >= 2
SECTION_VECTOR2 (.Level2InterruptVector.text, INTLEVEL2_VECTOR_VADDR)
#endif
@ -166,8 +168,10 @@ SECTIONS
__boot_reloc_table_start = ABSOLUTE(.);
#if !MERGED_VECTORS
#ifdef SUPPORT_WINDOWED
RELOCATE_ENTRY(_WindowVectors_text,
.WindowVectors.text);
#endif
#if XCHAL_EXCM_LEVEL >= 2
RELOCATE_ENTRY(_Level2InterruptVector_text,
.Level2InterruptVector.text);
@ -229,14 +233,18 @@ SECTIONS
#if !MERGED_VECTORS
/* The vectors are relocated to the real position at startup time */
#ifdef SUPPORT_WINDOWED
SECTION_VECTOR4 (_WindowVectors_text,
.WindowVectors.text,
WINDOW_VECTORS_VADDR,
.dummy)
LAST)
#undef LAST
#define LAST .WindowVectors.text
#endif
SECTION_VECTOR4 (_DebugInterruptVector_text,
.DebugInterruptVector.text,
DEBUG_VECTOR_VADDR,
.WindowVectors.text)
LAST)
#undef LAST
#define LAST .DebugInterruptVector.text
#if XCHAL_EXCM_LEVEL >= 2