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unicore32-softmmu: Make UniCore32 cpuid & exceptions correct and runable

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This patch initializes the cpuid to exactly correct value because
linux kernel will check it.
In addition, the exception types are specified in proper situations.
Then it could make exceptions generated correctly and timely.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Guan Xuetao 2012-08-10 14:42:23 +08:00 • committed by Blue Swirl
parent 527d9979b4
commit d48813dd76
4 changed files with 25 additions and 12 deletions
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19
target-unicore32/cpu.c
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@ -1,7 +1,7 @@
/*
* QEMU UniCore32 CPU
*
* Copyright (c) 2010-2011 GUAN Xue-tao
* Copyright (c) 2010-2012 Guan Xuetao
* Copyright (c) 2012 SUSE LINUX Products GmbH
*
* This program is free software; you can redistribute it and/or modify
@ -32,13 +32,16 @@ static void unicore_ii_cpu_initfn(Object *obj)
UniCore32CPU *cpu = UNICORE32_CPU(obj);
CPUUniCore32State *env = &cpu->env;
env->cp0.c0_cpuid = 0x40010863;
env->cp0.c0_cpuid = 0x4d000863;
env->cp0.c0_cachetype = 0x0d152152;
env->cp0.c1_sys = 0x2000;
env->cp0.c2_base = 0x0;
env->cp0.c3_faultstatus = 0x0;
env->cp0.c4_faultaddr = 0x0;
env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
env->cp0.c0_cachetype = 0x1dd20d2;
env->cp0.c1_sys = 0x00090078;
}
static void uc32_any_cpu_initfn(Object *obj)
@ -47,6 +50,7 @@ static void uc32_any_cpu_initfn(Object *obj)
CPUUniCore32State *env = &cpu->env;
env->cp0.c0_cpuid = 0xffffffff;
env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
set_feature(env, UC32_HWCAP_CMOV);
set_feature(env, UC32_HWCAP_UCF64);
@ -65,8 +69,13 @@ static void uc32_cpu_initfn(Object *obj)
cpu_exec_init(env);
env->cpu_model_str = object_get_typename(obj);
#ifdef CONFIG_USER_ONLY
env->uncached_asr = ASR_MODE_USER;
env->regs[31] = 0;
#else
env->uncached_asr = ASR_MODE_PRIV;
env->regs[31] = 0x03000000;
#endif
tlb_flush(env, 1);
}