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fix some oss-fuzz (#1258)

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* fix oss-fuzz 22107.

* fix oss-fuzz 22112.

* clean up build target.

* fix oss-fuzz 22226.

* fix oss-fuzz 22227.

* fix oss-fuzz 11640.

* fix oss-fuzz 20772.
This commit is contained in:
Chen Huitao
2020-05-16 10:38:16 +08:00
committed by GitHub
parent 94c94cdff0
commit 08240d5453
4 changed files with 28 additions and 22 deletions
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16
qemu/tcg/tcg.c
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@@ -2394,7 +2394,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
if (allocate_args) {
/* XXX: if more than TCG_STATIC_CALL_ARGS_SIZE is needed,
preallocate call stack */
tcg_abort();
return -1;
}
stack_offset = TCG_TARGET_CALL_STACK_OFFSET;
@@ -2420,7 +2420,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
tcg_out_movi(s, ts->type, reg, ts->val);
tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset);
} else {
tcg_abort();
return -1;
}
}
#ifndef TCG_TARGET_STACK_GROWSUP
@@ -2446,7 +2446,7 @@ static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
/* XXX: sign extend ? */
tcg_out_movi(s, ts->type, reg, ts->val);
} else {
tcg_abort();
return -1;
}
tcg_regset_set_reg(allocated_regs, reg);
}
@@ -2530,6 +2530,7 @@ static inline int tcg_gen_code_common(TCGContext *s,
int op_index;
const TCGOpDef *def;
const TCGArg *args;
int ret;
#ifdef DEBUG_DISAS
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
@@ -2622,16 +2623,21 @@ static inline int tcg_gen_code_common(TCGContext *s,
tcg_out_label(s, args[0], s->code_ptr);
break;
case INDEX_op_call:
args += tcg_reg_alloc_call(s, def, opc, args,
ret = tcg_reg_alloc_call(s, def, opc, args,
s->op_dead_args[op_index],
s->op_sync_args[op_index]);
if (ret == -1) {
goto the_end;
} else {
args += ret;
}
goto next;
case INDEX_op_end:
goto the_end;
default:
/* Sanity check that we've not introduced any unhandled opcodes. */
if (def->flags & TCG_OPF_NOT_PRESENT) {
tcg_abort();
goto the_end;
}
/* Note: in order to speed up the code, it would be much
faster to have specialized register allocator functions for