linux-kernel - [PATCH v3 02/22] MIPS: Export higher/highest relocation functions in uasm

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Date:   Fri,  1 Dec 2023 12:14:45 +0100
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Paul Burton <paulburton@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
        Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Théo Lebrun <theo.lebrun@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH v3 02/22] MIPS: Export higher/highest relocation functions in uasm

From: Jiaxun Yang <jiaxun.yang@...goat.com>

Export uasm_rel_{higher,highest} functions.
Those functions can be helpful in dealing with 64bit immediates.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/mips/include/asm/uasm.h | 2 ++
 arch/mips/mm/uasm.c          | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index 296bcf31abb57..12db6d2fca070 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -196,6 +196,8 @@ void uasm_build_label(struct uasm_label **lab, u32 *addr,
 #ifdef CONFIG_64BIT
 int uasm_in_compat_space_p(long addr);
 #endif
+int uasm_rel_highest(long val);
+int uasm_rel_higher(long val);
 int uasm_rel_hi(long val);
 int uasm_rel_lo(long val);
 void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c
index 125140979d62c..6846bf2084c5e 100644
--- a/arch/mips/mm/uasm.c
+++ b/arch/mips/mm/uasm.c
@@ -425,7 +425,7 @@ int uasm_in_compat_space_p(long addr)
 }
 UASM_EXPORT_SYMBOL(uasm_in_compat_space_p);
 
-static int uasm_rel_highest(long val)
+int uasm_rel_highest(long val)
 {
 #ifdef CONFIG_64BIT
 	return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
@@ -433,8 +433,9 @@ static int uasm_rel_highest(long val)
 	return 0;
 #endif
 }
+UASM_EXPORT_SYMBOL(uasm_rel_highest);
 
-static int uasm_rel_higher(long val)
+int uasm_rel_higher(long val)
 {
 #ifdef CONFIG_64BIT
 	return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
@@ -442,6 +443,7 @@ static int uasm_rel_higher(long val)
 	return 0;
 #endif
 }
+UASM_EXPORT_SYMBOL(uasm_rel_higher);
 
 int uasm_rel_hi(long val)
 {
-- 
2.42.0