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[PULL 1/8] linux-user/elfload: Implement ELF_HWCAP for RISC-V
From: |
Laurent Vivier |
Subject: |
[PULL 1/8] linux-user/elfload: Implement ELF_HWCAP for RISC-V |
Date: |
Thu, 8 Jul 2021 12:07:49 +0200 |
From: Kito Cheng <kito.cheng@sifive.com>
Set I, M, A, F, D and C bit for hwcap if misa is set.
Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210706035015.122899-1-kito.cheng@sifive.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
linux-user/elfload.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 598ab8aa1396..42ef2a114855 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1434,6 +1434,19 @@ static void elf_core_copy_regs(target_elf_gregset_t
*regs,
#define ELF_CLASS ELFCLASS64
#endif
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+#define MISA_BIT(EXT) (1 << (EXT - 'A'))
+ RISCVCPU *cpu = RISCV_CPU(thread_cpu);
+ uint32_t mask = MISA_BIT('I') | MISA_BIT('M') | MISA_BIT('A')
+ | MISA_BIT('F') | MISA_BIT('D') | MISA_BIT('C');
+
+ return cpu->env.misa & mask;
+#undef MISA_BIT
+}
+
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
--
2.31.1
- [PULL 0/8] Linux user for 6.1 patches, Laurent Vivier, 2021/07/08
- [PULL 1/8] linux-user/elfload: Implement ELF_HWCAP for RISC-V,
Laurent Vivier <=
- [PULL 2/8] linux-user: fill ppid field in /proc/self/stat, Laurent Vivier, 2021/07/08
- [PULL 4/8] linux-user/alpha: Handle TARGET_EWOULDBLOCK as TARGET_EAGAIN, Laurent Vivier, 2021/07/08
- [PULL 3/8] linux-user: Fix style problems in linuxload.c, Laurent Vivier, 2021/07/08
- [PULL 5/8] linux-user/hppa: Handle TARGET_EWOULDBLOCK as TARGET_EAGAIN, Laurent Vivier, 2021/07/08
- [PULL 7/8] linux-user/alpha: Remove hardcoded tabs (code style), Laurent Vivier, 2021/07/08
- [PULL 6/8] linux-user/mips: Handle TARGET_EWOULDBLOCK as TARGET_EAGAIN, Laurent Vivier, 2021/07/08
- [PULL 8/8] linux-user/syscall: Remove hardcoded tabs (code style), Laurent Vivier, 2021/07/08
- Re: [PULL 0/8] Linux user for 6.1 patches, Peter Maydell, 2021/07/08