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([2a01:e0a:3cb:7bb0:78bd:2e7e:120c:26bb]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d1fdda2dbsm131788185e9.2.2025.03.18.03.47.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 03:47:21 -0700 (PDT) From: Jerome Forissier To: u-boot@lists.denx.de Cc: Ilias Apalodimas , Jerome Forissier , Tom Rini , Simon Glass , Heinrich Schuchardt , Andrew Goodbody , Yu-Chien Peter Lin , Jiaxun Yang Subject: [PATCH v4 02/14] arm: add initjmp() Date: Tue, 18 Mar 2025 11:46:38 +0100 Message-ID: <20250318104659.1114340-3-jerome.forissier@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250318104659.1114340-1-jerome.forissier@linaro.org> References: <20250318104659.1114340-1-jerome.forissier@linaro.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Implement initjmp() for Arm. Signed-off-by: Jerome Forissier Acked-by: Ilias Apalodimas --- arch/Kconfig | 1 + arch/arm/lib/setjmp.S | 12 ++++++++++++ arch/arm/lib/setjmp_aarch64.S | 10 ++++++++++ 3 files changed, 23 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 14111ca14fb..7a3141e92b3 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -95,6 +95,7 @@ config ARC config ARM bool "ARM architecture" select HAVE_SETJMP + select HAVE_INITJMP select ARCH_SUPPORTS_LTO select CREATE_ARCH_SYMLINK select HAVE_PRIVATE_LIBGCC if !ARM64 diff --git a/arch/arm/lib/setjmp.S b/arch/arm/lib/setjmp.S index 2f041aeef01..81bef578719 100644 --- a/arch/arm/lib/setjmp.S +++ b/arch/arm/lib/setjmp.S @@ -34,3 +34,15 @@ ENTRY(longjmp) ret lr ENDPROC(longjmp) .popsection + +.pushsection .text.initjmp, "ax" +ENTRY(initjmp) + stm a1, {v1-v8} + /* a2: entry point address, a3: stack base, a4: stack size */ + add a3, a3, a4 + str a3, [a1, #32] /* where setjmp would save sp */ + str a2, [a1, #36] /* where setjmp would save lr */ + mov a1, #0 + ret lr +ENDPROC(initjmp) +.popsection diff --git a/arch/arm/lib/setjmp_aarch64.S b/arch/arm/lib/setjmp_aarch64.S index 1b8d000eb48..01193ccc426 100644 --- a/arch/arm/lib/setjmp_aarch64.S +++ b/arch/arm/lib/setjmp_aarch64.S @@ -39,3 +39,13 @@ ENTRY(longjmp) ret ENDPROC(longjmp) .popsection + +.pushsection .text.initjmp, "ax" +ENTRY(initjmp) + /* x1: entry point address, x2: stack base, x3: stack size */ + add x2, x2, x3 + stp x1, x2, [x0,#88] + mov x0, #0 + ret +ENDPROC(initjmp) +.popsection