From: Dylan Hatch <dylanbhatch@google.com>
To: Roman Gushchin <roman.gushchin@linux.dev>,
Weinan Liu <wnliu@google.com>, Will Deacon <will@kernel.org>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Indu Bhagat <ibhagatgnu@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Jiri Kosina <jikos@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Jens Remus <jremus@linux.ibm.com>
Cc: Dylan Hatch <dylanbhatch@google.com>,
Prasanna Kumar T S M <ptsm@linux.microsoft.com>,
Puranjay Mohan <puranjay@kernel.org>, Song Liu <song@kernel.org>,
joe.lawrence@redhat.com, linux-toolchains@vger.kernel.org,
linux-kernel@vger.kernel.org, live-patching@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Randy Dunlap <rdunlap@infradead.org>,
Mostafa Saleh <smostafa@google.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH v6 4/9] arm64, crypto/lib: Annotate leaf functions with CFI info.
Date: Tue, 19 May 2026 06:49:45 +0000 [thread overview]
Message-ID: <20260519064950.493949-5-dylanbhatch@google.com> (raw)
In-Reply-To: <20260519064950.493949-1-dylanbhatch@google.com>
DWARF CFI (Call Frame Information) specifies how to recover return
address and callee-saved registers for annotated functions. These
annotations are generated by the compiler, but for assembly, they must
be annotated by hand.
Add simple CFI annotations to assembly leaf functions so that the LR can
be recovered by the unwinder when an exception is taken from one of them.
Signed-off-by: Dylan Hatch <dylanbhatch@google.com>
---
arch/arm64/crypto/aes-ce-ccm-core.S | 12 +++----
arch/arm64/crypto/aes-neonbs-core.S | 40 +++++++++++------------
arch/arm64/crypto/ghash-ce-core.S | 20 ++++++------
arch/arm64/crypto/sm4-ce-ccm-core.S | 16 +++++-----
arch/arm64/crypto/sm4-ce-cipher-core.S | 4 +--
arch/arm64/crypto/sm4-ce-core.S | 44 +++++++++++++-------------
arch/arm64/crypto/sm4-ce-gcm-core.S | 16 +++++-----
arch/arm64/crypto/sm4-neon-core.S | 12 +++----
arch/arm64/include/asm/linkage.h | 30 ++++++++++++++++++
arch/arm64/lib/clear_page.S | 4 +--
arch/arm64/lib/clear_user.S | 4 +--
arch/arm64/lib/copy_from_user.S | 4 +--
arch/arm64/lib/copy_page.S | 4 +--
arch/arm64/lib/copy_to_user.S | 4 +--
arch/arm64/lib/memchr.S | 4 +--
arch/arm64/lib/memcmp.S | 4 +--
arch/arm64/lib/memcpy.S | 8 ++---
arch/arm64/lib/memset.S | 8 ++---
arch/arm64/lib/mte.S | 28 ++++++++--------
arch/arm64/lib/strchr.S | 4 +--
arch/arm64/lib/strcmp.S | 4 +--
arch/arm64/lib/strlen.S | 4 +--
arch/arm64/lib/strncmp.S | 4 +--
arch/arm64/lib/strnlen.S | 4 +--
arch/arm64/lib/tishift.S | 12 +++----
25 files changed, 164 insertions(+), 134 deletions(-)
diff --git a/arch/arm64/crypto/aes-ce-ccm-core.S b/arch/arm64/crypto/aes-ce-ccm-core.S
index f2624238fd95..519309c886b9 100644
--- a/arch/arm64/crypto/aes-ce-ccm-core.S
+++ b/arch/arm64/crypto/aes-ce-ccm-core.S
@@ -80,7 +80,7 @@ CPU_LE( rev x8, x8 )
ret
.endm
-SYM_FUNC_START_LOCAL(ce_aes_ccm_crypt_tail)
+SYM_LEAF_FUNC_START_LOCAL(ce_aes_ccm_crypt_tail)
eor v0.16b, v0.16b, v5.16b /* final round mac */
eor v1.16b, v1.16b, v5.16b /* final round enc */
@@ -113,7 +113,7 @@ SYM_INNER_LABEL(ce_aes_ccm_final, SYM_L_LOCAL)
eor v0.16b, v0.16b, v1.16b /* en-/decrypt the mac */
0: st1 {v0.16b}, [x5] /* store result */
ret
-SYM_FUNC_END(ce_aes_ccm_crypt_tail)
+SYM_LEAF_FUNC_END(ce_aes_ccm_crypt_tail)
/*
* void ce_aes_ccm_encrypt(u8 out[], u8 const in[], u32 cbytes,
@@ -123,15 +123,15 @@ SYM_FUNC_END(ce_aes_ccm_crypt_tail)
* u8 const rk[], u32 rounds, u8 mac[],
* u8 ctr[], u8 const final_iv[]);
*/
-SYM_FUNC_START(ce_aes_ccm_encrypt)
+SYM_LEAF_FUNC_START(ce_aes_ccm_encrypt)
movi v22.16b, #255
aes_ccm_do_crypt 1
-SYM_FUNC_END(ce_aes_ccm_encrypt)
+SYM_LEAF_FUNC_END(ce_aes_ccm_encrypt)
-SYM_FUNC_START(ce_aes_ccm_decrypt)
+SYM_LEAF_FUNC_START(ce_aes_ccm_decrypt)
movi v22.16b, #0
aes_ccm_do_crypt 0
-SYM_FUNC_END(ce_aes_ccm_decrypt)
+SYM_LEAF_FUNC_END(ce_aes_ccm_decrypt)
.section ".rodata", "a"
.align 6
diff --git a/arch/arm64/crypto/aes-neonbs-core.S b/arch/arm64/crypto/aes-neonbs-core.S
index baf450717b24..34b5c3c63c22 100644
--- a/arch/arm64/crypto/aes-neonbs-core.S
+++ b/arch/arm64/crypto/aes-neonbs-core.S
@@ -381,7 +381,7 @@ ISRM0: .octa 0x0306090c00070a0d01040b0e0205080f
/*
* void aesbs_convert_key(u8 out[], u32 const rk[], int rounds)
*/
-SYM_FUNC_START(aesbs_convert_key)
+SYM_LEAF_FUNC_START(aesbs_convert_key)
ld1 {v7.4s}, [x1], #16 // load round 0 key
ld1 {v17.4s}, [x1], #16 // load round 1 key
@@ -426,10 +426,10 @@ SYM_FUNC_START(aesbs_convert_key)
eor v17.16b, v17.16b, v7.16b
str q17, [x0]
ret
-SYM_FUNC_END(aesbs_convert_key)
+SYM_LEAF_FUNC_END(aesbs_convert_key)
.align 4
-SYM_FUNC_START_LOCAL(aesbs_encrypt8)
+SYM_LEAF_FUNC_START_LOCAL(aesbs_encrypt8)
ldr q9, [bskey], #16 // round 0 key
ldr q8, M0SR
ldr q24, SR
@@ -489,10 +489,10 @@ SYM_FUNC_START_LOCAL(aesbs_encrypt8)
eor v2.16b, v2.16b, v12.16b
eor v5.16b, v5.16b, v12.16b
ret
-SYM_FUNC_END(aesbs_encrypt8)
+SYM_LEAF_FUNC_END(aesbs_encrypt8)
.align 4
-SYM_FUNC_START_LOCAL(aesbs_decrypt8)
+SYM_LEAF_FUNC_START_LOCAL(aesbs_decrypt8)
lsl x9, rounds, #7
add bskey, bskey, x9
@@ -554,7 +554,7 @@ SYM_FUNC_START_LOCAL(aesbs_decrypt8)
eor v3.16b, v3.16b, v12.16b
eor v5.16b, v5.16b, v12.16b
ret
-SYM_FUNC_END(aesbs_decrypt8)
+SYM_LEAF_FUNC_END(aesbs_decrypt8)
/*
* aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
@@ -621,21 +621,21 @@ SYM_FUNC_END(aesbs_decrypt8)
.endm
.align 4
-SYM_TYPED_FUNC_START(aesbs_ecb_encrypt)
+SYM_TYPED_LEAF_FUNC_START(aesbs_ecb_encrypt)
__ecb_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
-SYM_FUNC_END(aesbs_ecb_encrypt)
+SYM_LEAF_FUNC_END(aesbs_ecb_encrypt)
.align 4
-SYM_TYPED_FUNC_START(aesbs_ecb_decrypt)
+SYM_TYPED_LEAF_FUNC_START(aesbs_ecb_decrypt)
__ecb_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
-SYM_FUNC_END(aesbs_ecb_decrypt)
+SYM_LEAF_FUNC_END(aesbs_ecb_decrypt)
/*
* aesbs_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
* int blocks, u8 iv[])
*/
.align 4
-SYM_FUNC_START(aesbs_cbc_decrypt)
+SYM_LEAF_FUNC_START(aesbs_cbc_decrypt)
frame_push 6
mov x19, x0
@@ -719,7 +719,7 @@ SYM_FUNC_START(aesbs_cbc_decrypt)
2: frame_pop
ret
-SYM_FUNC_END(aesbs_cbc_decrypt)
+SYM_LEAF_FUNC_END(aesbs_cbc_decrypt)
.macro next_tweak, out, in, const, tmp
sshr \tmp\().2d, \in\().2d, #63
@@ -735,7 +735,7 @@ SYM_FUNC_END(aesbs_cbc_decrypt)
* aesbs_xts_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
* int blocks, u8 iv[])
*/
-SYM_FUNC_START_LOCAL(__xts_crypt8)
+SYM_LEAF_FUNC_START_LOCAL(__xts_crypt8)
movi v18.2s, #0x1
movi v19.2s, #0x87
uzp1 v18.4s, v18.4s, v19.4s
@@ -766,7 +766,7 @@ SYM_FUNC_START_LOCAL(__xts_crypt8)
mov bskey, x2
mov rounds, x3
br x16
-SYM_FUNC_END(__xts_crypt8)
+SYM_LEAF_FUNC_END(__xts_crypt8)
.macro __xts_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7
frame_push 0, 32
@@ -800,13 +800,13 @@ SYM_FUNC_END(__xts_crypt8)
ret
.endm
-SYM_TYPED_FUNC_START(aesbs_xts_encrypt)
+SYM_TYPED_LEAF_FUNC_START(aesbs_xts_encrypt)
__xts_crypt aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
-SYM_FUNC_END(aesbs_xts_encrypt)
+SYM_LEAF_FUNC_END(aesbs_xts_encrypt)
-SYM_TYPED_FUNC_START(aesbs_xts_decrypt)
+SYM_TYPED_LEAF_FUNC_START(aesbs_xts_decrypt)
__xts_crypt aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
-SYM_FUNC_END(aesbs_xts_decrypt)
+SYM_LEAF_FUNC_END(aesbs_xts_decrypt)
.macro next_ctr, v
mov \v\().d[1], x8
@@ -820,7 +820,7 @@ SYM_FUNC_END(aesbs_xts_decrypt)
* aesbs_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[],
* int rounds, int blocks, u8 iv[])
*/
-SYM_FUNC_START(aesbs_ctr_encrypt)
+SYM_LEAF_FUNC_START(aesbs_ctr_encrypt)
frame_push 0
ldp x7, x8, [x5]
ld1 {v0.16b}, [x5]
@@ -863,4 +863,4 @@ CPU_LE( rev x8, x8 )
st1 {v0.16b}, [x5]
frame_pop
ret
-SYM_FUNC_END(aesbs_ctr_encrypt)
+SYM_LEAF_FUNC_END(aesbs_ctr_encrypt)
diff --git a/arch/arm64/crypto/ghash-ce-core.S b/arch/arm64/crypto/ghash-ce-core.S
index 33772d8fe6b5..3471430c2a53 100644
--- a/arch/arm64/crypto/ghash-ce-core.S
+++ b/arch/arm64/crypto/ghash-ce-core.S
@@ -66,7 +66,7 @@
* void pmull_ghash_update_p64(int blocks, u64 dg[], const char *src,
* u64 const h[4][2], const char *head)
*/
-SYM_FUNC_START(pmull_ghash_update_p64)
+SYM_LEAF_FUNC_START(pmull_ghash_update_p64)
ld1 {SHASH.2d}, [x3]
ld1 {XL.2d}, [x1]
@@ -173,7 +173,7 @@ CPU_LE( rev64 T1.16b, T1.16b )
5: st1 {XL.2d}, [x1]
ret
-SYM_FUNC_END(pmull_ghash_update_p64)
+SYM_LEAF_FUNC_END(pmull_ghash_update_p64)
KS0 .req v8
KS1 .req v9
@@ -417,9 +417,9 @@ CPU_LE( rev w8, w8 )
* u64 const h[4][2], u64 dg[], u8 ctr[],
* u32 const rk[], int rounds, u8 tag[])
*/
-SYM_FUNC_START(pmull_gcm_encrypt)
+SYM_LEAF_FUNC_START(pmull_gcm_encrypt)
pmull_gcm_do_crypt 1
-SYM_FUNC_END(pmull_gcm_encrypt)
+SYM_LEAF_FUNC_END(pmull_gcm_encrypt)
/*
* int pmull_gcm_decrypt(int bytes, u8 dst[], const u8 src[],
@@ -427,11 +427,11 @@ SYM_FUNC_END(pmull_gcm_encrypt)
* u32 const rk[], int rounds, const u8 l[],
* const u8 tag[], u64 authsize)
*/
-SYM_FUNC_START(pmull_gcm_decrypt)
+SYM_LEAF_FUNC_START(pmull_gcm_decrypt)
pmull_gcm_do_crypt 0
-SYM_FUNC_END(pmull_gcm_decrypt)
+SYM_LEAF_FUNC_END(pmull_gcm_decrypt)
-SYM_FUNC_START_LOCAL(pmull_gcm_ghash_4x)
+SYM_LEAF_FUNC_START_LOCAL(pmull_gcm_ghash_4x)
movi MASK.16b, #0xe1
shl MASK.2d, MASK.2d, #57
@@ -512,9 +512,9 @@ SYM_FUNC_START_LOCAL(pmull_gcm_ghash_4x)
eor XL.16b, XL.16b, T2.16b
ret
-SYM_FUNC_END(pmull_gcm_ghash_4x)
+SYM_LEAF_FUNC_END(pmull_gcm_ghash_4x)
-SYM_FUNC_START_LOCAL(pmull_gcm_enc_4x)
+SYM_LEAF_FUNC_START_LOCAL(pmull_gcm_enc_4x)
ld1 {KS0.16b}, [x5] // load upper counter
sub w10, w8, #4
sub w11, w8, #3
@@ -577,7 +577,7 @@ SYM_FUNC_START_LOCAL(pmull_gcm_enc_4x)
eor INP3.16b, INP3.16b, KS3.16b
ret
-SYM_FUNC_END(pmull_gcm_enc_4x)
+SYM_LEAF_FUNC_END(pmull_gcm_enc_4x)
.section ".rodata", "a"
.align 6
diff --git a/arch/arm64/crypto/sm4-ce-ccm-core.S b/arch/arm64/crypto/sm4-ce-ccm-core.S
index fa85856f33ce..20a8853609e0 100644
--- a/arch/arm64/crypto/sm4-ce-ccm-core.S
+++ b/arch/arm64/crypto/sm4-ce-ccm-core.S
@@ -37,7 +37,7 @@
.align 3
-SYM_FUNC_START(sm4_ce_cbcmac_update)
+SYM_LEAF_FUNC_START(sm4_ce_cbcmac_update)
/* input:
* x0: round key array, CTX
* x1: mac
@@ -81,10 +81,10 @@ SYM_FUNC_START(sm4_ce_cbcmac_update)
.Lcbcmac_end:
st1 {RMAC.16b}, [x1]
ret
-SYM_FUNC_END(sm4_ce_cbcmac_update)
+SYM_LEAF_FUNC_END(sm4_ce_cbcmac_update)
.align 3
-SYM_FUNC_START(sm4_ce_ccm_final)
+SYM_LEAF_FUNC_START(sm4_ce_ccm_final)
/* input:
* x0: round key array, CTX
* x1: ctr0 (big endian, 128 bit)
@@ -102,10 +102,10 @@ SYM_FUNC_START(sm4_ce_ccm_final)
st1 {RMAC.16b}, [x2]
ret
-SYM_FUNC_END(sm4_ce_ccm_final)
+SYM_LEAF_FUNC_END(sm4_ce_ccm_final)
.align 3
-SYM_TYPED_FUNC_START(sm4_ce_ccm_enc)
+SYM_TYPED_LEAF_FUNC_START(sm4_ce_ccm_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -214,10 +214,10 @@ SYM_TYPED_FUNC_START(sm4_ce_ccm_enc)
.Lccm_enc_ret:
ret
-SYM_FUNC_END(sm4_ce_ccm_enc)
+SYM_LEAF_FUNC_END(sm4_ce_ccm_enc)
.align 3
-SYM_TYPED_FUNC_START(sm4_ce_ccm_dec)
+SYM_TYPED_LEAF_FUNC_START(sm4_ce_ccm_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -326,4 +326,4 @@ SYM_TYPED_FUNC_START(sm4_ce_ccm_dec)
.Lccm_dec_ret:
ret
-SYM_FUNC_END(sm4_ce_ccm_dec)
+SYM_LEAF_FUNC_END(sm4_ce_ccm_dec)
diff --git a/arch/arm64/crypto/sm4-ce-cipher-core.S b/arch/arm64/crypto/sm4-ce-cipher-core.S
index 4ac6cfbc5797..7aea346cb14c 100644
--- a/arch/arm64/crypto/sm4-ce-cipher-core.S
+++ b/arch/arm64/crypto/sm4-ce-cipher-core.S
@@ -15,7 +15,7 @@
* void sm4_ce_do_crypt(const u32 *rk, u32 *out, const u32 *in);
*/
.text
-SYM_FUNC_START(sm4_ce_do_crypt)
+SYM_LEAF_FUNC_START(sm4_ce_do_crypt)
ld1 {v8.4s}, [x2]
ld1 {v0.4s-v3.4s}, [x0], #64
CPU_LE( rev32 v8.16b, v8.16b )
@@ -33,4 +33,4 @@ CPU_LE( rev32 v8.16b, v8.16b )
CPU_LE( rev32 v8.16b, v8.16b )
st1 {v8.4s}, [x1]
ret
-SYM_FUNC_END(sm4_ce_do_crypt)
+SYM_LEAF_FUNC_END(sm4_ce_do_crypt)
diff --git a/arch/arm64/crypto/sm4-ce-core.S b/arch/arm64/crypto/sm4-ce-core.S
index 1f3625c2c67e..6af5b10859b8 100644
--- a/arch/arm64/crypto/sm4-ce-core.S
+++ b/arch/arm64/crypto/sm4-ce-core.S
@@ -40,7 +40,7 @@
.align 3
-SYM_FUNC_START(sm4_ce_expand_key)
+SYM_LEAF_FUNC_START(sm4_ce_expand_key)
/* input:
* x0: 128-bit key
* x1: rkey_enc
@@ -86,10 +86,10 @@ SYM_FUNC_START(sm4_ce_expand_key)
st1 {v20.16b-v23.16b}, [x2]
ret;
-SYM_FUNC_END(sm4_ce_expand_key)
+SYM_LEAF_FUNC_END(sm4_ce_expand_key)
.align 3
-SYM_FUNC_START(sm4_ce_crypt_block)
+SYM_LEAF_FUNC_START(sm4_ce_crypt_block)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -102,10 +102,10 @@ SYM_FUNC_START(sm4_ce_crypt_block)
st1 {v0.16b}, [x1];
ret;
-SYM_FUNC_END(sm4_ce_crypt_block)
+SYM_LEAF_FUNC_END(sm4_ce_crypt_block)
.align 3
-SYM_FUNC_START(sm4_ce_crypt)
+SYM_LEAF_FUNC_START(sm4_ce_crypt)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -153,10 +153,10 @@ SYM_FUNC_START(sm4_ce_crypt)
.Lcrypt_end:
ret;
-SYM_FUNC_END(sm4_ce_crypt)
+SYM_LEAF_FUNC_END(sm4_ce_crypt)
.align 3
-SYM_FUNC_START(sm4_ce_cbc_enc)
+SYM_LEAF_FUNC_START(sm4_ce_cbc_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -208,10 +208,10 @@ SYM_FUNC_START(sm4_ce_cbc_enc)
st1 {RIV.16b}, [x3]
ret
-SYM_FUNC_END(sm4_ce_cbc_enc)
+SYM_LEAF_FUNC_END(sm4_ce_cbc_enc)
.align 3
-SYM_FUNC_START(sm4_ce_cbc_dec)
+SYM_LEAF_FUNC_START(sm4_ce_cbc_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -306,10 +306,10 @@ SYM_FUNC_START(sm4_ce_cbc_dec)
st1 {RIV.16b}, [x3]
ret
-SYM_FUNC_END(sm4_ce_cbc_dec)
+SYM_LEAF_FUNC_END(sm4_ce_cbc_dec)
.align 3
-SYM_FUNC_START(sm4_ce_cbc_cts_enc)
+SYM_LEAF_FUNC_START(sm4_ce_cbc_cts_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -354,10 +354,10 @@ SYM_FUNC_START(sm4_ce_cbc_cts_enc)
st1 {v1.16b}, [x1]
ret
-SYM_FUNC_END(sm4_ce_cbc_cts_enc)
+SYM_LEAF_FUNC_END(sm4_ce_cbc_cts_enc)
.align 3
-SYM_FUNC_START(sm4_ce_cbc_cts_dec)
+SYM_LEAF_FUNC_START(sm4_ce_cbc_cts_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -400,10 +400,10 @@ SYM_FUNC_START(sm4_ce_cbc_cts_dec)
st1 {v0.16b}, [x1]
ret
-SYM_FUNC_END(sm4_ce_cbc_cts_dec)
+SYM_LEAF_FUNC_END(sm4_ce_cbc_cts_dec)
.align 3
-SYM_FUNC_START(sm4_ce_ctr_enc)
+SYM_LEAF_FUNC_START(sm4_ce_ctr_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -506,7 +506,7 @@ SYM_FUNC_START(sm4_ce_ctr_enc)
stp x7, x8, [x3]
ret
-SYM_FUNC_END(sm4_ce_ctr_enc)
+SYM_LEAF_FUNC_END(sm4_ce_ctr_enc)
#define tweak_next(vt, vin, RTMP) \
@@ -517,7 +517,7 @@ SYM_FUNC_END(sm4_ce_ctr_enc)
eor vt.16b, vt.16b, RTMP.16b;
.align 3
-SYM_FUNC_START(sm4_ce_xts_enc)
+SYM_LEAF_FUNC_START(sm4_ce_xts_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -681,10 +681,10 @@ SYM_FUNC_START(sm4_ce_xts_enc)
.Lxts_enc_ret:
ret
-SYM_FUNC_END(sm4_ce_xts_enc)
+SYM_LEAF_FUNC_END(sm4_ce_xts_enc)
.align 3
-SYM_FUNC_START(sm4_ce_xts_dec)
+SYM_LEAF_FUNC_START(sm4_ce_xts_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -848,10 +848,10 @@ SYM_FUNC_START(sm4_ce_xts_dec)
.Lxts_dec_ret:
ret
-SYM_FUNC_END(sm4_ce_xts_dec)
+SYM_LEAF_FUNC_END(sm4_ce_xts_dec)
.align 3
-SYM_FUNC_START(sm4_ce_mac_update)
+SYM_LEAF_FUNC_START(sm4_ce_mac_update)
/* input:
* x0: round key array, CTX
* x1: digest
@@ -917,7 +917,7 @@ SYM_FUNC_START(sm4_ce_mac_update)
.Lmac_ret:
st1 {RMAC.16b}, [x1]
ret
-SYM_FUNC_END(sm4_ce_mac_update)
+SYM_LEAF_FUNC_END(sm4_ce_mac_update)
.section ".rodata", "a"
diff --git a/arch/arm64/crypto/sm4-ce-gcm-core.S b/arch/arm64/crypto/sm4-ce-gcm-core.S
index 347f25d75727..dac6db8160f2 100644
--- a/arch/arm64/crypto/sm4-ce-gcm-core.S
+++ b/arch/arm64/crypto/sm4-ce-gcm-core.S
@@ -259,7 +259,7 @@
#define RH4 v19
.align 3
-SYM_FUNC_START(sm4_ce_pmull_ghash_setup)
+SYM_LEAF_FUNC_START(sm4_ce_pmull_ghash_setup)
/* input:
* x0: round key array, CTX
* x1: ghash table
@@ -293,10 +293,10 @@ SYM_FUNC_START(sm4_ce_pmull_ghash_setup)
st1 {RH1.16b-RH4.16b}, [x1]
ret
-SYM_FUNC_END(sm4_ce_pmull_ghash_setup)
+SYM_LEAF_FUNC_END(sm4_ce_pmull_ghash_setup)
.align 3
-SYM_FUNC_START(pmull_ghash_update)
+SYM_LEAF_FUNC_START(pmull_ghash_update)
/* input:
* x0: ghash table
* x1: ghash result
@@ -368,10 +368,10 @@ SYM_FUNC_START(pmull_ghash_update)
st1 {RHASH.2d}, [x1]
ret
-SYM_FUNC_END(pmull_ghash_update)
+SYM_LEAF_FUNC_END(pmull_ghash_update)
.align 3
-SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_enc)
+SYM_TYPED_LEAF_FUNC_START(sm4_ce_pmull_gcm_enc)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -534,7 +534,7 @@ SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_enc)
st1 {RHASH.2d}, [x5]
ret
-SYM_FUNC_END(sm4_ce_pmull_gcm_enc)
+SYM_LEAF_FUNC_END(sm4_ce_pmull_gcm_enc)
#undef RR1
#undef RR3
@@ -582,7 +582,7 @@ SYM_FUNC_END(sm4_ce_pmull_gcm_enc)
#define RH3 v20
.align 3
-SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_dec)
+SYM_TYPED_LEAF_FUNC_START(sm4_ce_pmull_gcm_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -726,7 +726,7 @@ SYM_TYPED_FUNC_START(sm4_ce_pmull_gcm_dec)
st1 {RHASH.2d}, [x5]
ret
-SYM_FUNC_END(sm4_ce_pmull_gcm_dec)
+SYM_LEAF_FUNC_END(sm4_ce_pmull_gcm_dec)
.section ".rodata", "a"
.align 4
diff --git a/arch/arm64/crypto/sm4-neon-core.S b/arch/arm64/crypto/sm4-neon-core.S
index 734dc7193610..d1fe37fce13a 100644
--- a/arch/arm64/crypto/sm4-neon-core.S
+++ b/arch/arm64/crypto/sm4-neon-core.S
@@ -257,7 +257,7 @@
.align 3
-SYM_FUNC_START(sm4_neon_crypt)
+SYM_LEAF_FUNC_START(sm4_neon_crypt)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -318,10 +318,10 @@ SYM_FUNC_START(sm4_neon_crypt)
.Lcrypt_end:
ret
-SYM_FUNC_END(sm4_neon_crypt)
+SYM_LEAF_FUNC_END(sm4_neon_crypt)
.align 3
-SYM_FUNC_START(sm4_neon_cbc_dec)
+SYM_LEAF_FUNC_START(sm4_neon_cbc_dec)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -435,10 +435,10 @@ SYM_FUNC_START(sm4_neon_cbc_dec)
st1 {RIV.16b}, [x3]
ret
-SYM_FUNC_END(sm4_neon_cbc_dec)
+SYM_LEAF_FUNC_END(sm4_neon_cbc_dec)
.align 3
-SYM_FUNC_START(sm4_neon_ctr_crypt)
+SYM_LEAF_FUNC_START(sm4_neon_ctr_crypt)
/* input:
* x0: round key array, CTX
* x1: dst
@@ -563,4 +563,4 @@ SYM_FUNC_START(sm4_neon_ctr_crypt)
stp x7, x8, [x3]
ret
-SYM_FUNC_END(sm4_neon_ctr_crypt)
+SYM_LEAF_FUNC_END(sm4_neon_ctr_crypt)
diff --git a/arch/arm64/include/asm/linkage.h b/arch/arm64/include/asm/linkage.h
index 40bd17add539..6b8cb36a3343 100644
--- a/arch/arm64/include/asm/linkage.h
+++ b/arch/arm64/include/asm/linkage.h
@@ -3,6 +3,12 @@
#ifdef __ASSEMBLER__
#include <asm/assembler.h>
+
+/*
+ * Do not generate .eh_frame. Only generate .debug_frame and optionally
+ * .sframe (via assembler option --gsframe[-N]).
+ */
+ .cfi_sections .debug_frame
#endif
#define __ALIGN .balign CONFIG_FUNCTION_ALIGNMENT
@@ -43,4 +49,28 @@
SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) \
bti c ;
+
+/*
+ * SYM_[TYPED_]LEAF_FUNC_[START|END] macros add CFI minimal CFI directives
+ * allowing .sframe data to be generated for functions which do not modify the
+ * LR (x30). Unwind data will not be correct if these macros are used on
+ * non-leaf functions, as additional CFI directives would be necessary in such
+ * cases.
+ */
+#define SYM_LEAF_FUNC_START(name) \
+ .cfi_startproc ; \
+ SYM_FUNC_START(name)
+
+#define SYM_LEAF_FUNC_END(name) \
+ .cfi_endproc ; \
+ SYM_FUNC_END(name)
+
+#define SYM_LEAF_FUNC_START_LOCAL(name) \
+ .cfi_startproc ; \
+ SYM_FUNC_START_LOCAL(name)
+
+#define SYM_TYPED_LEAF_FUNC_START(name) \
+ .cfi_startproc ; \
+ SYM_TYPED_FUNC_START(name)
+
#endif
diff --git a/arch/arm64/lib/clear_page.S b/arch/arm64/lib/clear_page.S
index bd6f7d5eb6eb..fceb875c3570 100644
--- a/arch/arm64/lib/clear_page.S
+++ b/arch/arm64/lib/clear_page.S
@@ -14,7 +14,7 @@
* Parameters:
* x0 - dest
*/
-SYM_FUNC_START(__pi_clear_page)
+SYM_LEAF_FUNC_START(__pi_clear_page)
#ifdef CONFIG_AS_HAS_MOPS
.arch_extension mops
alternative_if_not ARM64_HAS_MOPS
@@ -48,6 +48,6 @@ alternative_else_nop_endif
tst x0, #(PAGE_SIZE - 1)
b.ne 2b
ret
-SYM_FUNC_END(__pi_clear_page)
+SYM_LEAF_FUNC_END(__pi_clear_page)
SYM_FUNC_ALIAS(clear_page, __pi_clear_page)
EXPORT_SYMBOL(clear_page)
diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S
index de9a303b6ad0..cf07c010ca92 100644
--- a/arch/arm64/lib/clear_user.S
+++ b/arch/arm64/lib/clear_user.S
@@ -17,7 +17,7 @@
* Alignment fixed up by hardware.
*/
-SYM_FUNC_START(__arch_clear_user)
+SYM_LEAF_FUNC_START(__arch_clear_user)
add x2, x0, x1
#ifdef CONFIG_AS_HAS_MOPS
@@ -68,5 +68,5 @@ USER(7f, sttrb wzr, [x2, #-1])
8: add x0, x0, #4 // ...or the second word of the 4-7 byte case
9: sub x0, x2, x0
ret
-SYM_FUNC_END(__arch_clear_user)
+SYM_LEAF_FUNC_END(__arch_clear_user)
EXPORT_SYMBOL(__arch_clear_user)
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 400057d607ec..e9bb9c2dd8e1 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -61,7 +61,7 @@
end .req x5
srcin .req x15
-SYM_FUNC_START(__arch_copy_from_user)
+SYM_LEAF_FUNC_START(__arch_copy_from_user)
add end, x0, x2
mov srcin, x1
#include "copy_template.S"
@@ -79,5 +79,5 @@ USER(9998f, ldtrb tmp1w, [srcin])
strb tmp1w, [dst], #1
9998: sub x0, end, dst // bytes not copied
ret
-SYM_FUNC_END(__arch_copy_from_user)
+SYM_LEAF_FUNC_END(__arch_copy_from_user)
EXPORT_SYMBOL(__arch_copy_from_user)
diff --git a/arch/arm64/lib/copy_page.S b/arch/arm64/lib/copy_page.S
index e6374e7e5511..b6048d648306 100644
--- a/arch/arm64/lib/copy_page.S
+++ b/arch/arm64/lib/copy_page.S
@@ -17,7 +17,7 @@
* x0 - dest
* x1 - src
*/
-SYM_FUNC_START(__pi_copy_page)
+SYM_LEAF_FUNC_START(__pi_copy_page)
#ifdef CONFIG_AS_HAS_MOPS
.arch_extension mops
alternative_if_not ARM64_HAS_MOPS
@@ -77,6 +77,6 @@ alternative_else_nop_endif
stnp x16, x17, [x0, #112 - 256]
ret
-SYM_FUNC_END(__pi_copy_page)
+SYM_LEAF_FUNC_END(__pi_copy_page)
SYM_FUNC_ALIAS(copy_page, __pi_copy_page)
EXPORT_SYMBOL(copy_page)
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 819f2e3fc7a9..aea10a5b3cba 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -60,7 +60,7 @@
end .req x5
srcin .req x15
-SYM_FUNC_START(__arch_copy_to_user)
+SYM_LEAF_FUNC_START(__arch_copy_to_user)
add end, x0, x2
mov srcin, x1
#include "copy_template.S"
@@ -79,5 +79,5 @@ USER(9998f, sttrb tmp1w, [dst])
add dst, dst, #1
9998: sub x0, end, dst // bytes not copied
ret
-SYM_FUNC_END(__arch_copy_to_user)
+SYM_LEAF_FUNC_END(__arch_copy_to_user)
EXPORT_SYMBOL(__arch_copy_to_user)
diff --git a/arch/arm64/lib/memchr.S b/arch/arm64/lib/memchr.S
index 37a9f2a4f7f4..909599bba5bf 100644
--- a/arch/arm64/lib/memchr.S
+++ b/arch/arm64/lib/memchr.S
@@ -38,7 +38,7 @@
.p2align 4
nop
-SYM_FUNC_START(__pi_memchr)
+SYM_LEAF_FUNC_START(__pi_memchr)
and chrin, chrin, #0xff
lsr wordcnt, cntin, #3
cbz wordcnt, L(byte_loop)
@@ -71,6 +71,6 @@ CPU_LE( rev tmp, tmp)
L(not_found):
mov result, #0
ret
-SYM_FUNC_END(__pi_memchr)
+SYM_LEAF_FUNC_END(__pi_memchr)
SYM_FUNC_ALIAS_WEAK(memchr, __pi_memchr)
EXPORT_SYMBOL_NOKASAN(memchr)
diff --git a/arch/arm64/lib/memcmp.S b/arch/arm64/lib/memcmp.S
index a5ccf2c55f91..91ee3a00e664 100644
--- a/arch/arm64/lib/memcmp.S
+++ b/arch/arm64/lib/memcmp.S
@@ -32,7 +32,7 @@
#define tmp1 x7
#define tmp2 x8
-SYM_FUNC_START(__pi_memcmp)
+SYM_LEAF_FUNC_START(__pi_memcmp)
subs limit, limit, 8
b.lo L(less8)
@@ -134,6 +134,6 @@ L(byte_loop):
b.eq L(byte_loop)
sub result, data1w, data2w
ret
-SYM_FUNC_END(__pi_memcmp)
+SYM_LEAF_FUNC_END(__pi_memcmp)
SYM_FUNC_ALIAS_WEAK(memcmp, __pi_memcmp)
EXPORT_SYMBOL_NOKASAN(memcmp)
diff --git a/arch/arm64/lib/memcpy.S b/arch/arm64/lib/memcpy.S
index 9b99106fb95f..90caf402ea7d 100644
--- a/arch/arm64/lib/memcpy.S
+++ b/arch/arm64/lib/memcpy.S
@@ -57,7 +57,7 @@
The loop tail is handled by always copying 64 bytes from the end.
*/
-SYM_FUNC_START_LOCAL(__pi_memcpy_generic)
+SYM_LEAF_FUNC_START_LOCAL(__pi_memcpy_generic)
add srcend, src, count
add dstend, dstin, count
cmp count, 128
@@ -238,11 +238,11 @@ L(copy64_from_start):
stp B_l, B_h, [dstin, 16]
stp C_l, C_h, [dstin]
ret
-SYM_FUNC_END(__pi_memcpy_generic)
+SYM_LEAF_FUNC_END(__pi_memcpy_generic)
#ifdef CONFIG_AS_HAS_MOPS
.arch_extension mops
-SYM_FUNC_START(__pi_memcpy)
+SYM_LEAF_FUNC_START(__pi_memcpy)
alternative_if_not ARM64_HAS_MOPS
b __pi_memcpy_generic
alternative_else_nop_endif
@@ -252,7 +252,7 @@ alternative_else_nop_endif
cpym [dst]!, [src]!, count!
cpye [dst]!, [src]!, count!
ret
-SYM_FUNC_END(__pi_memcpy)
+SYM_LEAF_FUNC_END(__pi_memcpy)
#else
SYM_FUNC_ALIAS(__pi_memcpy, __pi_memcpy_generic)
#endif
diff --git a/arch/arm64/lib/memset.S b/arch/arm64/lib/memset.S
index 97157da65ec6..8ee307f5891b 100644
--- a/arch/arm64/lib/memset.S
+++ b/arch/arm64/lib/memset.S
@@ -43,7 +43,7 @@ dst .req x8
tmp3w .req w9
tmp3 .req x9
-SYM_FUNC_START_LOCAL(__pi_memset_generic)
+SYM_LEAF_FUNC_START_LOCAL(__pi_memset_generic)
mov dst, dstin /* Preserve return value. */
and A_lw, val, #255
orr A_lw, A_lw, A_lw, lsl #8
@@ -202,11 +202,11 @@ SYM_FUNC_START_LOCAL(__pi_memset_generic)
ands count, count, zva_bits_x
b.ne .Ltail_maybe_long
ret
-SYM_FUNC_END(__pi_memset_generic)
+SYM_LEAF_FUNC_END(__pi_memset_generic)
#ifdef CONFIG_AS_HAS_MOPS
.arch_extension mops
-SYM_FUNC_START(__pi_memset)
+SYM_LEAF_FUNC_START(__pi_memset)
alternative_if_not ARM64_HAS_MOPS
b __pi_memset_generic
alternative_else_nop_endif
@@ -216,7 +216,7 @@ alternative_else_nop_endif
setm [dst]!, count!, val_x
sete [dst]!, count!, val_x
ret
-SYM_FUNC_END(__pi_memset)
+SYM_LEAF_FUNC_END(__pi_memset)
#else
SYM_FUNC_ALIAS(__pi_memset, __pi_memset_generic)
#endif
diff --git a/arch/arm64/lib/mte.S b/arch/arm64/lib/mte.S
index 5018ac03b6bf..442202cd02a3 100644
--- a/arch/arm64/lib/mte.S
+++ b/arch/arm64/lib/mte.S
@@ -27,14 +27,14 @@
* Clear the tags in a page
* x0 - address of the page to be cleared
*/
-SYM_FUNC_START(mte_clear_page_tags)
+SYM_LEAF_FUNC_START(mte_clear_page_tags)
multitag_transfer_size x1, x2
1: stgm xzr, [x0]
add x0, x0, x1
tst x0, #(PAGE_SIZE - 1)
b.ne 1b
ret
-SYM_FUNC_END(mte_clear_page_tags)
+SYM_LEAF_FUNC_END(mte_clear_page_tags)
/*
* Zero the page and tags at the same time
@@ -42,7 +42,7 @@ SYM_FUNC_END(mte_clear_page_tags)
* Parameters:
* x0 - address to the beginning of the page
*/
-SYM_FUNC_START(mte_zero_clear_page_tags)
+SYM_LEAF_FUNC_START(mte_zero_clear_page_tags)
and x0, x0, #(1 << MTE_TAG_SHIFT) - 1 // clear the tag
mrs x1, dczid_el0
tbnz x1, #4, 2f // Branch if DC GZVA is prohibited
@@ -60,14 +60,14 @@ SYM_FUNC_START(mte_zero_clear_page_tags)
tst x0, #(PAGE_SIZE - 1)
b.ne 2b
ret
-SYM_FUNC_END(mte_zero_clear_page_tags)
+SYM_LEAF_FUNC_END(mte_zero_clear_page_tags)
/*
* Copy the tags from the source page to the destination one
* x0 - address of the destination page
* x1 - address of the source page
*/
-SYM_FUNC_START(mte_copy_page_tags)
+SYM_LEAF_FUNC_START(mte_copy_page_tags)
mov x2, x0
mov x3, x1
multitag_transfer_size x5, x6
@@ -78,7 +78,7 @@ SYM_FUNC_START(mte_copy_page_tags)
tst x2, #(PAGE_SIZE - 1)
b.ne 1b
ret
-SYM_FUNC_END(mte_copy_page_tags)
+SYM_LEAF_FUNC_END(mte_copy_page_tags)
/*
* Read tags from a user buffer (one tag per byte) and set the corresponding
@@ -89,7 +89,7 @@ SYM_FUNC_END(mte_copy_page_tags)
* Returns:
* x0 - number of tags read/set
*/
-SYM_FUNC_START(mte_copy_tags_from_user)
+SYM_LEAF_FUNC_START(mte_copy_tags_from_user)
mov x3, x1
cbz x2, 2f
1:
@@ -103,7 +103,7 @@ USER(2f, ldtrb w4, [x1])
// exception handling and function return
2: sub x0, x1, x3 // update the number of tags set
ret
-SYM_FUNC_END(mte_copy_tags_from_user)
+SYM_LEAF_FUNC_END(mte_copy_tags_from_user)
/*
* Get the tags from a kernel address range and write the tag values to the
@@ -114,7 +114,7 @@ SYM_FUNC_END(mte_copy_tags_from_user)
* Returns:
* x0 - number of tags read/set
*/
-SYM_FUNC_START(mte_copy_tags_to_user)
+SYM_LEAF_FUNC_START(mte_copy_tags_to_user)
mov x3, x0
cbz x2, 2f
1:
@@ -129,14 +129,14 @@ USER(2f, sttrb w4, [x0])
// exception handling and function return
2: sub x0, x0, x3 // update the number of tags copied
ret
-SYM_FUNC_END(mte_copy_tags_to_user)
+SYM_LEAF_FUNC_END(mte_copy_tags_to_user)
/*
* Save the tags in a page
* x0 - page address
* x1 - tag storage, MTE_PAGE_TAG_STORAGE bytes
*/
-SYM_FUNC_START(mte_save_page_tags)
+SYM_LEAF_FUNC_START(mte_save_page_tags)
multitag_transfer_size x7, x5
1:
mov x2, #0
@@ -153,14 +153,14 @@ SYM_FUNC_START(mte_save_page_tags)
b.ne 1b
ret
-SYM_FUNC_END(mte_save_page_tags)
+SYM_LEAF_FUNC_END(mte_save_page_tags)
/*
* Restore the tags in a page
* x0 - page address
* x1 - tag storage, MTE_PAGE_TAG_STORAGE bytes
*/
-SYM_FUNC_START(mte_restore_page_tags)
+SYM_LEAF_FUNC_START(mte_restore_page_tags)
multitag_transfer_size x7, x5
1:
ldr x2, [x1], #8
@@ -174,4 +174,4 @@ SYM_FUNC_START(mte_restore_page_tags)
b.ne 1b
ret
-SYM_FUNC_END(mte_restore_page_tags)
+SYM_LEAF_FUNC_END(mte_restore_page_tags)
diff --git a/arch/arm64/lib/strchr.S b/arch/arm64/lib/strchr.S
index 94ee67a6b212..455582efd07a 100644
--- a/arch/arm64/lib/strchr.S
+++ b/arch/arm64/lib/strchr.S
@@ -18,7 +18,7 @@
* Returns:
* x0 - address of first occurrence of 'c' or 0
*/
-SYM_FUNC_START(__pi_strchr)
+SYM_LEAF_FUNC_START(__pi_strchr)
and w1, w1, #0xff
1: ldrb w2, [x0], #1
cmp w2, w1
@@ -28,7 +28,7 @@ SYM_FUNC_START(__pi_strchr)
cmp w2, w1
csel x0, x0, xzr, eq
ret
-SYM_FUNC_END(__pi_strchr)
+SYM_LEAF_FUNC_END(__pi_strchr)
SYM_FUNC_ALIAS_WEAK(strchr, __pi_strchr)
EXPORT_SYMBOL_NOKASAN(strchr)
diff --git a/arch/arm64/lib/strcmp.S b/arch/arm64/lib/strcmp.S
index 9b89b4533607..d0ce2040a32b 100644
--- a/arch/arm64/lib/strcmp.S
+++ b/arch/arm64/lib/strcmp.S
@@ -53,7 +53,7 @@
NUL too in big-endian, byte-reverse the data before the NUL check. */
-SYM_FUNC_START(__pi_strcmp)
+SYM_LEAF_FUNC_START(__pi_strcmp)
sub off2, src2, src1
mov zeroones, REP8_01
and tmp, src1, 7
@@ -185,6 +185,6 @@ L(tail):
L(done):
sub result, data1, data2
ret
-SYM_FUNC_END(__pi_strcmp)
+SYM_LEAF_FUNC_END(__pi_strcmp)
SYM_FUNC_ALIAS_WEAK(strcmp, __pi_strcmp)
EXPORT_SYMBOL_NOKASAN(strcmp)
diff --git a/arch/arm64/lib/strlen.S b/arch/arm64/lib/strlen.S
index 4919fe81ae54..a5d4151548b5 100644
--- a/arch/arm64/lib/strlen.S
+++ b/arch/arm64/lib/strlen.S
@@ -79,7 +79,7 @@
whether the first fetch, which may be misaligned, crosses a page
boundary. */
-SYM_FUNC_START(__pi_strlen)
+SYM_LEAF_FUNC_START(__pi_strlen)
and tmp1, srcin, MIN_PAGE_SIZE - 1
mov zeroones, REP8_01
cmp tmp1, MIN_PAGE_SIZE - 16
@@ -208,6 +208,6 @@ L(page_cross):
csel data1, data1, tmp4, eq
csel data2, data2, tmp2, eq
b L(page_cross_entry)
-SYM_FUNC_END(__pi_strlen)
+SYM_LEAF_FUNC_END(__pi_strlen)
SYM_FUNC_ALIAS_WEAK(strlen, __pi_strlen)
EXPORT_SYMBOL_NOKASAN(strlen)
diff --git a/arch/arm64/lib/strncmp.S b/arch/arm64/lib/strncmp.S
index fe7bbc0b42a7..8fd5c5d7dc2a 100644
--- a/arch/arm64/lib/strncmp.S
+++ b/arch/arm64/lib/strncmp.S
@@ -58,7 +58,7 @@
#define LS_BK lsl
#endif
-SYM_FUNC_START(__pi_strncmp)
+SYM_LEAF_FUNC_START(__pi_strncmp)
cbz limit, L(ret0)
eor tmp1, src1, src2
mov zeroones, #REP8_01
@@ -305,6 +305,6 @@ L(syndrome_check):
L(ret0):
mov result, #0
ret
-SYM_FUNC_END(__pi_strncmp)
+SYM_LEAF_FUNC_END(__pi_strncmp)
SYM_FUNC_ALIAS_WEAK(strncmp, __pi_strncmp)
EXPORT_SYMBOL_NOKASAN(strncmp)
diff --git a/arch/arm64/lib/strnlen.S b/arch/arm64/lib/strnlen.S
index d5ac0e10a01d..9f3f02e3f7e2 100644
--- a/arch/arm64/lib/strnlen.S
+++ b/arch/arm64/lib/strnlen.S
@@ -47,7 +47,7 @@ limit_wd .req x14
#define REP8_7f 0x7f7f7f7f7f7f7f7f
#define REP8_80 0x8080808080808080
-SYM_FUNC_START(__pi_strnlen)
+SYM_LEAF_FUNC_START(__pi_strnlen)
cbz limit, .Lhit_limit
mov zeroones, #REP8_01
bic src, srcin, #15
@@ -156,7 +156,7 @@ CPU_LE( lsr tmp2, tmp2, tmp4 ) /* Shift (tmp1 & 63). */
.Lhit_limit:
mov len, limit
ret
-SYM_FUNC_END(__pi_strnlen)
+SYM_LEAF_FUNC_END(__pi_strnlen)
SYM_FUNC_ALIAS_WEAK(strnlen, __pi_strnlen)
EXPORT_SYMBOL_NOKASAN(strnlen)
diff --git a/arch/arm64/lib/tishift.S b/arch/arm64/lib/tishift.S
index a88613834fb0..b12d7f6a6003 100644
--- a/arch/arm64/lib/tishift.S
+++ b/arch/arm64/lib/tishift.S
@@ -7,7 +7,7 @@
#include <asm/assembler.h>
-SYM_FUNC_START(__ashlti3)
+SYM_LEAF_FUNC_START(__ashlti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
@@ -26,10 +26,10 @@ SYM_FUNC_START(__ashlti3)
lsl x1, x0, x1
mov x0, x2
ret
-SYM_FUNC_END(__ashlti3)
+SYM_LEAF_FUNC_END(__ashlti3)
EXPORT_SYMBOL(__ashlti3)
-SYM_FUNC_START(__ashrti3)
+SYM_LEAF_FUNC_START(__ashrti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
@@ -48,10 +48,10 @@ SYM_FUNC_START(__ashrti3)
asr x0, x1, x0
mov x1, x2
ret
-SYM_FUNC_END(__ashrti3)
+SYM_LEAF_FUNC_END(__ashrti3)
EXPORT_SYMBOL(__ashrti3)
-SYM_FUNC_START(__lshrti3)
+SYM_LEAF_FUNC_START(__lshrti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
@@ -70,5 +70,5 @@ SYM_FUNC_START(__lshrti3)
lsr x0, x1, x0
mov x1, x2
ret
-SYM_FUNC_END(__lshrti3)
+SYM_LEAF_FUNC_END(__lshrti3)
EXPORT_SYMBOL(__lshrti3)
--
2.54.0.563.g4f69b47b94-goog
next prev parent reply other threads:[~2026-05-19 6:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 6:49 [PATCH v6 0/9] unwind, arm64: add sframe unwinder for kernel Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 1/9] sframe: Allow kernelspace sframe sections Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 2/9] arm64, unwind: build kernel with sframe V3 info Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 3/9] arm64: entry: add unwind info for call_on_irq_stack() Dylan Hatch
2026-05-19 6:49 ` Dylan Hatch [this message]
2026-05-19 6:49 ` [PATCH v6 5/9] sframe: Provide PC lookup for vmlinux .sframe section Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 6/9] arm64/module, sframe: Add sframe support for modules Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 7/9] sframe: Introduce in-kernel SFRAME_VALIDATION Dylan Hatch
2026-05-19 6:49 ` [PATCH v6 8/9] sframe: Initialize debug info for kernel sections Dylan Hatch
2026-05-19 11:20 ` Jens Remus
2026-05-19 6:49 ` [PATCH v6 9/9] unwind: arm64: Use sframe to unwind interrupt frames Dylan Hatch
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