linux-kernel - [PATCH 08/10] x86: assembly, annotate aliases

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Date:   Fri, 17 Feb 2017 11:47:55 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     mingo@...hat.com
Cc:     tglx@...utronix.de, hpa@...or.com, x86@...nel.org,
        jpoimboe@...hat.com, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>, linux-crypto@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Subject: [PATCH 08/10] x86: assembly, annotate aliases

_key_expansion_128 is an alias to _key_expansion_256a, __memcpy to
memcpy, xen_syscall32_target to xen_sysenter_target, and so on. Annotate
them all using the new ENTRY_ALIAS and ENTRY_LOCAL_ALIAS. This will make
the tools generating the debuginfo happy.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: <x86@...nel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: <linux-crypto@...r.kernel.org>
Cc: <xen-devel@...ts.xenproject.org>
---
 arch/x86/crypto/aesni-intel_asm.S | 5 ++---
 arch/x86/lib/memcpy_64.S          | 4 ++--
 arch/x86/lib/memmove_64.S         | 4 ++--
 arch/x86/lib/memset_64.S          | 4 ++--
 arch/x86/xen/xen-asm_64.S         | 4 ++--
 5 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 624e4303d0fb..6a0f25be1a56 100644
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -1744,8 +1744,7 @@ ENDPROC(aesni_gcm_enc)
 #endif
 
 
-.align 4
-_key_expansion_128:
+ENTRY_LOCAL_ALIAS(_key_expansion_128)
 ENTRY_LOCAL(_key_expansion_256a)
 	pshufd $0b11111111, %xmm1, %xmm1
 	shufps $0b00010000, %xmm0, %xmm4
@@ -1756,8 +1755,8 @@ ENTRY_LOCAL(_key_expansion_256a)
 	movaps %xmm0, (TKEYP)
 	add $0x10, TKEYP
 	ret
-ENDPROC(_key_expansion_128)
 ENDPROC(_key_expansion_256a)
+END_ALIAS(_key_expansion_128)
 
 ENTRY_LOCAL(_key_expansion_192a)
 	pshufd $0b01010101, %xmm1, %xmm1
diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
index 779782f58324..c9ac54822e87 100644
--- a/arch/x86/lib/memcpy_64.S
+++ b/arch/x86/lib/memcpy_64.S
@@ -26,7 +26,7 @@
  * Output:
  * rax original destination
  */
-ENTRY(__memcpy)
+ENTRY_ALIAS(__memcpy)
 ENTRY(memcpy)
 	ALTERNATIVE_2 "jmp memcpy_orig", "", X86_FEATURE_REP_GOOD, \
 		      "jmp memcpy_erms", X86_FEATURE_ERMS
@@ -40,7 +40,7 @@ ENTRY(memcpy)
 	rep movsb
 	ret
 ENDPROC(memcpy)
-ENDPROC(__memcpy)
+END_ALIAS(__memcpy)
 EXPORT_SYMBOL(memcpy)
 EXPORT_SYMBOL(__memcpy)
 
diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S
index 15de86cd15b0..76f54ba3dd26 100644
--- a/arch/x86/lib/memmove_64.S
+++ b/arch/x86/lib/memmove_64.S
@@ -25,7 +25,7 @@
  */
 .weak memmove
 
-ENTRY(memmove)
+ENTRY_ALIAS(memmove)
 ENTRY(__memmove)
 
 	/* Handle more 32 bytes in loop */
@@ -207,6 +207,6 @@ ENTRY(__memmove)
 13:
 	retq
 ENDPROC(__memmove)
-ENDPROC(memmove)
+END_ALIAS(memmove)
 EXPORT_SYMBOL(__memmove)
 EXPORT_SYMBOL(memmove)
diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S
index 55b95db30a61..be6c4705ec51 100644
--- a/arch/x86/lib/memset_64.S
+++ b/arch/x86/lib/memset_64.S
@@ -18,7 +18,7 @@
  *
  * rax   original destination
  */
-ENTRY(memset)
+ENTRY_ALIAS(memset)
 ENTRY(__memset)
 	/*
 	 * Some CPUs support enhanced REP MOVSB/STOSB feature. It is recommended
@@ -42,8 +42,8 @@ ENTRY(__memset)
 	rep stosb
 	movq %r9,%rax
 	ret
-ENDPROC(memset)
 ENDPROC(__memset)
+END_ALIAS(memset)
 EXPORT_SYMBOL(memset)
 EXPORT_SYMBOL(__memset)
 
diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
index d617bea76039..4b0fe749f10c 100644
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -117,13 +117,13 @@ ENDPROC(xen_sysenter_target)
 
 #else /* !CONFIG_IA32_EMULATION */
 
-ENTRY(xen_syscall32_target)
+ENTRY_ALIAS(xen_syscall32_target)
 ENTRY(xen_sysenter_target)
 	lea 16(%rsp), %rsp	/* strip %rcx, %r11 */
 	mov $-ENOSYS, %rax
 	pushq $0
 	jmp hypercall_iret
-ENDPROC(xen_syscall32_target)
 ENDPROC(xen_sysenter_target)
+END_ALIAS(xen_syscall32_target)
 
 #endif	/* CONFIG_IA32_EMULATION */
-- 
2.11.1