[RFC,V2,24/38] riscv: s64ilp32: Add TImode (128 int) support

Commit Message

Guo Ren Nov. 12, 2023, 6:15 a.m. UTC

From: Guo Ren <[e-mail]>

The s64ilp32 uses 64bit compiler, so it could support “Tetra
Integer” mode, which represents a sixteen-byte (128) integer.

It's the first 32BIT linux support TImode :)

Signed-off-by: Guo Ren <[e-mail]>
Signed-off-by: Guo Ren <[e-mail]>
---
 arch/riscv/Kconfig      | 1 +
 arch/riscv/lib/Makefile | 1 +
 2 files changed, 2 insertions(+)

Patch

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 0fc03aa076e6..a45e31ef3b2c 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -339,6 +339,7 @@  config ARCH_RV64I
 config ARCH_RV64ILP32
 	bool "RV64ILP32"
 	depends on NONPORTABLE
+	select ARCH_SUPPORTS_INT128 if !$(cc-option,$(m64-flag) -D__SIZEOF_INT128__=0)
 	select 32BIT
 	select MMU
 	select VDSO64ILP32
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index 26cb2502ecf8..68af463795e1 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -9,5 +9,6 @@  lib-y			+= strncmp.o
 lib-$(CONFIG_MMU)	+= uaccess.o
 lib-$(CONFIG_64BIT)	+= tishift.o
 lib-$(CONFIG_RISCV_ISA_ZICBOZ)	+= clear_page.o
+lib-$(CONFIG_ARCH_RV64ILP32) += tishift.o
 
 obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o