On 07/05/2024 13:47, Pu Lehui wrote:
On 2024/5/7 18:45, Xiao Wang wrote:
The Zba extension provides add.uw insn which can be used to implement
zext.w with rs2 set as ZERO.
Signed-off-by: Xiao Wang <xiao.w.wang@xxxxxxxxx>
---
arch/riscv/Kconfig | 19 +++++++++++++++++++
arch/riscv/net/bpf_jit.h | 18 ++++++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6bec1bce6586..0679127cc0ea 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -586,6 +586,14 @@ config RISCV_ISA_V_PREEMPTIVE
preemption. Enabling this config will result in higher memory
consumption due to the allocation of per-task's kernel Vector
context.
+config TOOLCHAIN_HAS_ZBA
+ bool
+ default y
+ depends on !64BIT || $(cc-option,-mabi=lp64 -march=rv64ima_zba)
+ depends on !32BIT || $(cc-option,-mabi=ilp32 -march=rv32ima_zba)
+ depends on LLD_VERSION >= 150000 || LD_VERSION >= 23900
+ depends on AS_HAS_OPTION_ARCH
+
config TOOLCHAIN_HAS_ZBB
At this point would it be easier to ask the toolchain what's enabled
and put into kconfig via some sort of script?
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
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