linux-kernel - [RFC PATCH V2 19/38] riscv: s64ilp32: Add ELF32 support

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Message-Id: <20231112061514.2306187-20-guoren@kernel.org>
Date:   Sun, 12 Nov 2023 01:14:55 -0500
From:   guoren@...nel.org
To:     arnd@...db.de, guoren@...nel.org, palmer@...osinc.com,
        tglx@...utronix.de, conor.dooley@...rochip.com, heiko@...ech.de,
        apatel@...tanamicro.com, atishp@...shpatra.org, bjorn@...nel.org,
        paul.walmsley@...ive.com, anup@...infault.org, jiawei@...as.ac.cn,
        liweiwei@...as.ac.cn, wefu@...hat.com, U2FsdGVkX1@...il.com,
        wangjunqiang@...as.ac.cn, kito.cheng@...ive.com,
        andy.chiu@...ive.com, vincent.chen@...ive.com,
        greentime.hu@...ive.com, wuwei2016@...as.ac.cn, jrtc27@...c27.com,
        luto@...nel.org, fweimer@...hat.com, catalin.marinas@....com,
        hjl.tools@...il.com
Cc:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Guo Ren <guoren@...ux.alibaba.com>, Guo Ren <guoren@...enl.org>
Subject: [RFC PATCH V2 19/38] riscv: s64ilp32: Add ELF32 support

From: Guo Ren <guoren@...ux.alibaba.com>

Use abi_len to distinct ELF32 and ELF64 because s64ilp32 is xlen=64 and
abi_len=32 (__SIZEOF_POINTER__=4). And s64ilp32 is an ELF32 based the
same as s32ilp32.

Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
Signed-off-by: Guo Ren <guoren@...enl.org>
---
 arch/riscv/include/uapi/asm/elf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/uapi/asm/elf.h b/arch/riscv/include/uapi/asm/elf.h
index d696d6610231..962e8ec8fe05 100644
--- a/arch/riscv/include/uapi/asm/elf.h
+++ b/arch/riscv/include/uapi/asm/elf.h
@@ -24,7 +24,7 @@ typedef __u64 elf_fpreg_t;
 typedef union __riscv_fp_state elf_fpregset_t;
 #define ELF_NFPREG (sizeof(struct __riscv_d_ext_state) / sizeof(elf_fpreg_t))
 
-#if __riscv_xlen == 64
+#if __SIZEOF_POINTER__ == 8
 #define ELF_RISCV_R_SYM(r_info)		ELF64_R_SYM(r_info)
 #define ELF_RISCV_R_TYPE(r_info)	ELF64_R_TYPE(r_info)
 #else
-- 
2.36.1