linux-user: Fix mips fp64 executables loading
If a program requires fr1, we should set the FR bit of CP0 control status register and add F64 hardware flag. The corresponding `else if` branch statement is copied from the linux kernel sources (see `arch_check_elf` function in linux/arch/mips/kernel/elf.c). Signed-off-by: Daniil Kovalev <dkovalev@compiler-toolchain-for.me> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Message-Id: <20230404052153.16617-1-dkovalev@compiler-toolchain-for.me> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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@ -290,7 +290,10 @@ void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
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env->CP0_Status |= (1 << CP0St_FR);
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env->hflags |= MIPS_HFLAG_F64;
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}
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} else if (!prog_req.fre && !prog_req.frdefault &&
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} else if (prog_req.fr1) {
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env->CP0_Status |= (1 << CP0St_FR);
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env->hflags |= MIPS_HFLAG_F64;
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} else if (!prog_req.fre && !prog_req.frdefault &&
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!prog_req.fr1 && !prog_req.single && !prog_req.soft) {
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fprintf(stderr, "qemu: Can't find a matching FPU mode\n");
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exit(1);
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