|
From: | Richard Henderson |
Subject: | Re: [PATCH v16 3/9] linux-user: Add LoongArch elf support |
Date: | Wed, 15 Jun 2022 07:49:47 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 |
On 6/15/22 02:44, gaosong wrote:
Hi Richard. On 2022/6/15 上午12:21, Richard Henderson wrote:On 6/14/22 02:05, Song Gao wrote:+#define ELF_HWCAP get_elf_hwcap() + +static uint32_t get_elf_hwcap(void) +{ + return 0; +}This should not be zero. See cpu_probe_common in the kernel. At minimum HWCAP_LOONGARCH_CRC32 and HWCAP_LOONGARCH_FPU are missing. I don't know how many of the other features are implemented in target/loongarch/.HWCAP_LOONGARCH_LAM and HWCAP_LOONGARCH_UAL are need.
Ok, good. For clarity, you should determine these bits just like the kernel does from the config registers set at cpu reset, via cpu->env.cpucfg[*].
r~
[Prev in Thread] | Current Thread | [Next in Thread] |