gwj / at91sam9263 · Commits

Commit ffddfee3793240d91e9d23fd436fb9e8d66d1069

Authored by bellard
1 parent a2f659ee

added cpu_reset() 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@940 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 2 changed files with 38 additions and 29 deletions
target-i386/cpu.h
  View file @ffddfee
... ... @@ -352,6 +352,7 @@ typedef struct CPUX86State {
352 352 CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];
353 353 CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];
354 354  
  355 + /* from this point: preserved by CPU reset */
355 356 /* ice debug support */
356 357 uint32_t breakpoints[MAX_BREAKPOINTS];
357 358 int nb_breakpoints;
... ...
target-i386/helper2.c
  View file @ffddfee
... ... @@ -45,7 +45,6 @@ _syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)
45 45 CPUX86State *cpu_x86_init(void)
46 46 {
47 47 CPUX86State *env;
48   - int i;
49 48 static int inited;
50 49  
51 50 cpu_exec_init();
... ... @@ -54,10 +53,46 @@ CPUX86State *cpu_x86_init(void)
54 53 if (!env)
55 54 return NULL;
56 55 memset(env, 0, sizeof(CPUX86State));
  56 + /* init various static tables */
  57 + if (!inited) {
  58 + inited = 1;
  59 + optimize_flags_init();
  60 + }
  61 +#ifdef USE_CODE_COPY
  62 + /* testing code for code copy case */
  63 + {
  64 + struct modify_ldt_ldt_s ldt;
57 65  
58   - /* init to reset state */
  66 + ldt.entry_number = 1;
  67 + ldt.base_addr = (unsigned long)env;
  68 + ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
  69 + ldt.seg_32bit = 1;
  70 + ldt.contents = MODIFY_LDT_CONTENTS_DATA;
  71 + ldt.read_exec_only = 0;
  72 + ldt.limit_in_pages = 1;
  73 + ldt.seg_not_present = 0;
  74 + ldt.useable = 1;
  75 + modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
  76 +
  77 + asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
  78 + cpu_single_env = env;
  79 + }
  80 +#endif
  81 + cpu_reset(env);
  82 + return env;
  83 +}
  84 +
  85 +/* NOTE: must be called outside the CPU execute loop */
  86 +void cpu_reset(CPUX86State *env)
  87 +{
  88 + int i;
  89 +
  90 + memset(env, 0, offsetof(CPUX86State, breakpoints));
59 91  
60 92 tlb_flush(env, 1);
  93 +
  94 + /* init to reset state */
  95 +
61 96 #ifdef CONFIG_SOFTMMU
62 97 env->hflags |= HF_SOFTMMU_MASK;
63 98 #endif
... ... @@ -89,33 +124,6 @@ CPUX86State *cpu_x86_init(void)
89 124 for(i = 0;i < 8; i++)
90 125 env->fptags[i] = 1;
91 126 env->fpuc = 0x37f;
92   -
93   - /* init various static tables */
94   - if (!inited) {
95   - inited = 1;
96   - optimize_flags_init();
97   - }
98   -#ifdef USE_CODE_COPY
99   - /* testing code for code copy case */
100   - {
101   - struct modify_ldt_ldt_s ldt;
102   -
103   - ldt.entry_number = 1;
104   - ldt.base_addr = (unsigned long)env;
105   - ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
106   - ldt.seg_32bit = 1;
107   - ldt.contents = MODIFY_LDT_CONTENTS_DATA;
108   - ldt.read_exec_only = 0;
109   - ldt.limit_in_pages = 1;
110   - ldt.seg_not_present = 0;
111   - ldt.useable = 1;
112   - modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
113   -
114   - asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
115   - cpu_single_env = env;
116   - }
117   -#endif
118   - return env;
119 127 }
120 128  
121 129 void cpu_x86_close(CPUX86State *env)
... ...