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Avoid gen_opc_buf overflow. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4731 c046a42c-6fe2-441c-8c8c-71466251a162
master
ths 2008-06-11 12:26:29 +00:00
parent 8df1ca4ba5
commit faf7aaa918
1 changed files with 6 additions and 2 deletions
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8
target-mips/translate.c
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@ -7229,7 +7229,8 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
fprintf (logfile, "search pc %d\n", search_pc);
pc_start = tb->pc;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
/* Leave some spare opc slots for branch handling. */
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE - 16;
ctx.pc = pc_start;
ctx.saved_pc = -1;
ctx.tb = tb;
@ -7254,7 +7255,7 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
fprintf(logfile, "\ntb %p idx %d hflags %04x\n",
tb, ctx.mem_idx, ctx.hflags);
#endif
while (ctx.bstate == BS_NONE && gen_opc_ptr < gen_opc_end) {
while (ctx.bstate == BS_NONE) {
if (env->nb_breakpoints > 0) {
for(j = 0; j < env->nb_breakpoints; j++) {
if (env->breakpoints[j] == ctx.pc) {
@ -7290,6 +7291,9 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0)
break;
if (gen_opc_ptr >= gen_opc_end)
break;
#if defined (MIPS_SINGLE_STEP)
break;
#endif