[PATCH] linux-user/elfload: Implement ELF_HWCAP for RISC-V

[Kito Cheng]

RISC-V define the hwcap as same as content of misa, but it only take lower
26-bits.

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
---
 linux-user/elfload.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 17ab06f612..41b9ef72ea 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1433,6 +1433,17 @@ 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)
+{
+    RISCVCPU *cpu = RISCV_CPU(thread_cpu);
+    /* Take lower 26 bits from misa.  */
+    uint32_t hwcap = cpu->env.misa & 0x3ffffff;
+
+    return hwcap;
+}
+
 static inline void init_thread(struct target_pt_regs *regs,
                                struct image_info *infop)
 {
-- 
2.31.1