[PATCH v4 03/14] riscv: add initjmp()

[Jerome Forissier]

Implement initjmp() for RISC-V.

Signed-off-by: Jerome Forissier <jerome.foriss...@linaro.org>
---
 arch/Kconfig            |  1 +
 arch/riscv/lib/setjmp.S | 11 +++++++++++
 2 files changed, 12 insertions(+)

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..9e1f3d5749b 100644
--- a/arch/riscv/lib/setjmp.S
+++ b/arch/riscv/lib/setjmp.S
@@ -59,3 +59,14 @@ ENTRY(longjmp)
        ret
 ENDPROC(longjmp)
 .popsection
+
+.pushsection .text.initjmp, "ax"
+ENTRY(initjmp)
+       /* a1: entry point address, a2: stack base, a3: stack size */
+       add a2, a2, a3
+       STORE_IDX(a1, 12)
+       STORE_IDX(a2, 13)
+       li  a0, 0
+       ret
+ENDPROC(initjmp)
+.popsection
-- 
2.43.0