Revision 0e4b179d target-i386/helper2.c
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//#define DEBUG_MMU |
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#ifdef USE_CODE_COPY |
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#include <asm/ldt.h> |
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#include <linux/unistd.h> |
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_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount) |
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#endif |
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CPUX86State *cpu_x86_init(void) |
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{
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CPUX86State *env; |
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inited = 1; |
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optimize_flags_init(); |
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} |
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#ifdef USE_CODE_COPY |
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/* testing code for code copy case */ |
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{
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struct modify_ldt_ldt_s ldt; |
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ldt.entry_number = 1; |
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ldt.base_addr = (unsigned long)env; |
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ldt.limit = (sizeof(CPUState) + 0xfff) >> 12; |
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ldt.seg_32bit = 1; |
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ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
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ldt.read_exec_only = 0; |
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ldt.limit_in_pages = 1; |
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ldt.seg_not_present = 0; |
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ldt.useable = 1; |
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modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
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asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
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cpu_single_env = env; |
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} |
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#endif |
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return env; |
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} |
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#endif |
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/* if the cpu is currently executing code, we must unlink it and |
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all the potentially executing TB */ |
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cpu_interrupt(env, 0);
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cpu_interrupt(env, CPU_INTERRUPT_EXITTB);
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/* when a20 is changed, all the MMU mappings are invalid, so |
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we must flush everything */ |
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