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Fix 16-bit address computations (#747)

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* Remove glib from samples makefile

* changes to 16 bit segment registers needs to update segment base as well as segment selector

* change how x86 segment registers are set in 16-bit mode
This commit is contained in:
Chris Eagle 2017-02-07 17:37:41 -08:00 committed by Nguyen Anh Quynh
parent eb4dc61c66
commit f05984961b
1 changed files with 9 additions and 5 deletions
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14
qemu/target-i386/unicorn.c
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@ -11,6 +11,10 @@
#include <unicorn/x86.h> /* needed for uc_x86_mmr */ #include <unicorn/x86.h> /* needed for uc_x86_mmr */
#include "uc_priv.h" #include "uc_priv.h"
static void load_seg_16_helper(CPUX86State *env, int seg, uint32_t selector)
{
cpu_x86_load_seg_cache(env, seg, selector, (selector << 4), 0xffff, 0);
}
const int X86_REGS_STORAGE_SIZE = offsetof(CPUX86State, tlb_table); const int X86_REGS_STORAGE_SIZE = offsetof(CPUX86State, tlb_table);
@ -694,19 +698,19 @@ int x86_reg_write(struct uc_struct *uc, unsigned int *regs, void *const *vals, i
switch(regid) { switch(regid) {
default: break; default: break;
case UC_X86_REG_ES: case UC_X86_REG_ES:
X86_CPU(uc, mycpu)->env.segs[R_ES].selector = *(uint16_t *)value; load_seg_16_helper(&X86_CPU(uc, mycpu)->env, R_ES, *(uint16_t *)value);
continue; continue;
case UC_X86_REG_SS: case UC_X86_REG_SS:
X86_CPU(uc, mycpu)->env.segs[R_SS].selector = *(uint16_t *)value; load_seg_16_helper(&X86_CPU(uc, mycpu)->env, R_SS, *(uint16_t *)value);
continue; continue;
case UC_X86_REG_DS: case UC_X86_REG_DS:
X86_CPU(uc, mycpu)->env.segs[R_DS].selector = *(uint16_t *)value; load_seg_16_helper(&X86_CPU(uc, mycpu)->env, R_DS, *(uint16_t *)value);
continue; continue;
case UC_X86_REG_FS: case UC_X86_REG_FS:
X86_CPU(uc, mycpu)->env.segs[R_FS].selector = *(uint16_t *)value; load_seg_16_helper(&X86_CPU(uc, mycpu)->env, R_FS, *(uint16_t *)value);
continue; continue;
case UC_X86_REG_GS: case UC_X86_REG_GS:
X86_CPU(uc, mycpu)->env.segs[R_GS].selector = *(uint16_t *)value; load_seg_16_helper(&X86_CPU(uc, mycpu)->env, R_GS, *(uint16_t *)value);
continue; continue;
} }
// fall-thru // fall-thru