diff mbox series

[v3,03/14] riscv: add initjmp()

Message ID 20250304152510.2832340-4-jerome.forissier@linaro.org
State New
Headers show
Series Uthreads | expand

Commit Message

Jerome Forissier March 4, 2025, 3:24 p.m. UTC 
Implement initjmp() for RISC-V.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
---
 arch/Kconfig            |  1 +
 arch/riscv/lib/setjmp.S | 10 ++++++++++
 2 files changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/arch/Kconfig b/arch/Kconfig
index 7a3141e92b3..aa60c5ff03c 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -153,6 +153,7 @@  config RISCV
 	bool "RISC-V architecture"
 	select CREATE_ARCH_SYMLINK
 	select HAVE_SETJMP
+	select HAVE_INITJMP
 	select SUPPORT_ACPI
 	select SUPPORT_LITTLE_ENDIAN
 	select SUPPORT_OF_CONTROL
diff --git a/arch/riscv/lib/setjmp.S b/arch/riscv/lib/setjmp.S
index 99d6195827e..6f952a16eee 100644
--- a/arch/riscv/lib/setjmp.S
+++ b/arch/riscv/lib/setjmp.S
@@ -59,3 +59,13 @@  ENTRY(longjmp)
 	ret
 ENDPROC(longjmp)
 .popsection
+
+.pushsection .text.initjmp, "ax"
+ENTRY(initjmp)
+	/* a1: entry point address, a2: stack top */
+	STORE_IDX(a1, 12)
+	STORE_IDX(a2, 13)
+	li  a0, 0
+	ret
+ENDPROC(initjmp)
+.popsection