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Do no use .cfi_negate_ra_state within the assembly on Arm64 

Compiling openzfs on aarch64 with gcc-8 and gcc-9 is failing currently.
See issue #14965 for deeper context.

On platforms without pointer authentication, .cfi_negate_ra_state can be
defined to a no-op:
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/aarch64-tdep.c#l1413

I have tested this on Arm64 FreeBSD 13.2 and AlmaLinux-8.

Reviewed-by: Andrew Turner <andrew.turner4@arm.com>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #14965
Closes #15784
This commit is contained in:
Tino Reichardt 2024-04-15 22:56:10 +02:00 committed by Tony Hutter
parent 7aaf6ce9d8
commit 16c223eec9
2 changed files with 21 additions and 5 deletions
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14
module/icp/asm-aarch64/blake3/b3_aarch64_sse2.S
View File

@ -32,6 +32,14 @@
*/
#if defined(__aarch64__)
/* make gcc <= 9 happy */
#if LD_VERSION >= 233010000
#define CFI_NEGATE_RA_STATE .cfi_negate_ra_state
#else
#define CFI_NEGATE_RA_STATE
#endif
.text
.section .note.gnu.property,"a",@note
.p2align 3
@ -51,7 +59,7 @@
zfs_blake3_compress_in_place_sse2:
.cfi_startproc
hint #25
.cfi_negate_ra_state
CFI_NEGATE_RA_STATE
sub sp, sp, #96
stp x29, x30, [sp, #64]
add x29, sp, #64
@ -555,7 +563,7 @@ compress_pre:
zfs_blake3_compress_xof_sse2:
.cfi_startproc
hint #25
.cfi_negate_ra_state
CFI_NEGATE_RA_STATE
sub sp, sp, #96
stp x29, x30, [sp, #64]
add x29, sp, #64
@ -608,7 +616,7 @@ zfs_blake3_compress_xof_sse2:
zfs_blake3_hash_many_sse2:
.cfi_startproc
hint #25
.cfi_negate_ra_state
CFI_NEGATE_RA_STATE
stp d15, d14, [sp, #-160]!
stp d13, d12, [sp, #16]
stp d11, d10, [sp, #32]

12
module/icp/asm-aarch64/blake3/b3_aarch64_sse41.S
View File

@ -32,6 +32,14 @@
*/
#if defined(__aarch64__)
/* make gcc <= 9 happy */
#if LD_VERSION >= 233010000
#define CFI_NEGATE_RA_STATE .cfi_negate_ra_state
#else
#define CFI_NEGATE_RA_STATE
#endif
.text
.section .note.gnu.property,"a",@note
.p2align 3
@ -51,7 +59,7 @@
zfs_blake3_compress_in_place_sse41:
.cfi_startproc
hint #25
.cfi_negate_ra_state
CFI_NEGATE_RA_STATE
sub sp, sp, #96
stp x29, x30, [sp, #64]
add x29, sp, #64
@ -565,7 +573,7 @@ compress_pre:
zfs_blake3_compress_xof_sse41:
.cfi_startproc
hint #25
.cfi_negate_ra_state
CFI_NEGATE_RA_STATE
sub sp, sp, #96
stp x29, x30, [sp, #64]
add x29, sp, #64