lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231122030621.3759313-3-samuel.holland@sifive.com>
Date:   Tue, 21 Nov 2023 19:05:14 -0800
From:   Samuel Holland <samuel.holland@...ive.com>
To:     Palmer Dabbelt <palmer@...belt.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        linux-riscv@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        David Airlie <airlied@...il.com>,
        Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Pan Xinhui <Xinhui.Pan@....com>,
        Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
        Samuel Holland <samuel.holland@...ive.com>
Subject: [PATCH 2/3] riscv: Factor out riscv-march-y to a separate Makefile

Since it is not possible to incrementally add/remove extensions from the
compiler's ISA string by appending arguments, any code that wants to
modify the ISA string must recreate the whole thing. To support this,
factor out the logic for generating the -march argument so it can be
reused where needed.

Signed-off-by: Samuel Holland <samuel.holland@...ive.com>
---

 arch/riscv/Makefile     | 12 +-----------
 arch/riscv/Makefile.isa | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 11 deletions(-)
 create mode 100644 arch/riscv/Makefile.isa

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index a74be78678eb..c738eafe67a0 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -58,22 +58,12 @@ ifeq ($(CONFIG_SHADOW_CALL_STACK),y)
 	KBUILD_LDFLAGS += --no-relax-gp
 endif
 
-# ISA string setting
-riscv-march-$(CONFIG_ARCH_RV32I)	:= rv32ima
-riscv-march-$(CONFIG_ARCH_RV64I)	:= rv64ima
-riscv-march-$(CONFIG_FPU)		:= $(riscv-march-y)fd
-riscv-march-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-y)c
-riscv-march-$(CONFIG_RISCV_ISA_V)	:= $(riscv-march-y)v
-
 ifdef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC
 KBUILD_CFLAGS += -Wa,-misa-spec=2.2
 KBUILD_AFLAGS += -Wa,-misa-spec=2.2
-else
-riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei
 endif
 
-# Check if the toolchain supports Zihintpause extension
-riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause
+include $(srctree)/arch/riscv/Makefile.isa
 
 # Remove F,D,V from isa string for all. Keep extensions between "fd" and "v" by
 # matching non-v and non-multi-letter extensions out with the filter ([^v_]*)
diff --git a/arch/riscv/Makefile.isa b/arch/riscv/Makefile.isa
new file mode 100644
index 000000000000..e10c77e26fe6
--- /dev/null
+++ b/arch/riscv/Makefile.isa
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+# ISA string setting
+riscv-march-$(CONFIG_ARCH_RV32I)	:= rv32ima
+riscv-march-$(CONFIG_ARCH_RV64I)	:= rv64ima
+riscv-march-$(CONFIG_FPU)		:= $(riscv-march-y)fd
+riscv-march-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-y)c
+riscv-march-$(CONFIG_RISCV_ISA_V)	:= $(riscv-march-y)v
+
+ifndef CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC
+riscv-march-$(CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI) := $(riscv-march-y)_zicsr_zifencei
+endif
+
+# Check if the toolchain supports Zihintpause extension
+riscv-march-$(CONFIG_TOOLCHAIN_HAS_ZIHINTPAUSE) := $(riscv-march-y)_zihintpause
-- 
2.42.0

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ