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linux-user: Set ELF_BASE_PLATFORM for MIPS

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Match most appropriate base platform string based on insn_flags.
Logic is aligned with aligned with set_isa() from
arch/mips/kernel/cpu-probe.c in Linux kernel.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220803103009.95972-3-jiaxun.yang@flygoat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Jiaxun Yang 2022-08-03 11:30:09 +01:00 committed by Laurent Vivier
parent fcdc0ab4b4
commit fbf47c18aa
1 changed files with 31 additions and 0 deletions
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31
linux-user/elfload.c
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@ -1080,6 +1080,37 @@ static uint32_t get_elf_hwcap(void)
#define elf_check_abi(x) (!((x) & EF_MIPS_ABI2))
#endif
#define ELF_BASE_PLATFORM get_elf_base_platform()
#define MATCH_PLATFORM_INSN(_flags, _base_platform) \
do { if ((cpu->env.insn_flags & (_flags)) == _flags) \
{ return _base_platform; } } while (0)
static const char *get_elf_base_platform(void)
{
MIPSCPU *cpu = MIPS_CPU(thread_cpu);
/* 64 bit ISAs goes first */
MATCH_PLATFORM_INSN(CPU_MIPS64R6, "mips64r6");
MATCH_PLATFORM_INSN(CPU_MIPS64R5, "mips64r5");
MATCH_PLATFORM_INSN(CPU_MIPS64R2, "mips64r2");
MATCH_PLATFORM_INSN(CPU_MIPS64R1, "mips64");
MATCH_PLATFORM_INSN(CPU_MIPS5, "mips5");
MATCH_PLATFORM_INSN(CPU_MIPS4, "mips4");
MATCH_PLATFORM_INSN(CPU_MIPS3, "mips3");
/* 32 bit ISAs */
MATCH_PLATFORM_INSN(CPU_MIPS32R6, "mips32r6");
MATCH_PLATFORM_INSN(CPU_MIPS32R5, "mips32r5");
MATCH_PLATFORM_INSN(CPU_MIPS32R2, "mips32r2");
MATCH_PLATFORM_INSN(CPU_MIPS32R1, "mips32");
MATCH_PLATFORM_INSN(CPU_MIPS2, "mips2");
/* Fallback */
return "mips";
}
#undef MATCH_PLATFORM_INSN
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{