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linux-user: implement HWCAP bits on MIPS

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Add support for the two currently defined HWCAP bits on MIPS - R6 and
MSA.

Buglink: https://bugs.launchpad.net/qemu/+bug/1754372
Signed-off-by: James Cowgill <james.cowgill@mips.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180315151348.6451-1-james.cowgill@mips.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
James Cowgill 2018-03-15 15:13:48 +00:00 committed by Laurent Vivier
parent 947aeab311
commit 46a1ee4f39
1 changed files with 24 additions and 0 deletions
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24
linux-user/elfload.c
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@ -882,6 +882,30 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMIPSState *e
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
/* See arch/mips/include/uapi/asm/hwcap.h. */
enum {
HWCAP_MIPS_R6 = (1 << 0),
HWCAP_MIPS_MSA = (1 << 1),
};
#define ELF_HWCAP get_elf_hwcap()
static uint32_t get_elf_hwcap(void)
{
MIPSCPU *cpu = MIPS_CPU(thread_cpu);
uint32_t hwcaps = 0;
#define GET_FEATURE(flag, hwcap) \
do { if (cpu->env.insn_flags & (flag)) { hwcaps |= hwcap; } } while (0)
GET_FEATURE(ISA_MIPS32R6 | ISA_MIPS64R6, HWCAP_MIPS_R6);
GET_FEATURE(ASE_MSA, HWCAP_MIPS_MSA);
#undef GET_FEATURE
return hwcaps;
}
#endif /* TARGET_MIPS */
#ifdef TARGET_MICROBLAZE