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Fix bsd-user qemu_vmalloc() host page protection code
[mirror_qemu.git] / gen-icount.h
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29e922b6
BS
1#include "qemu-timer.h"
2
bf20dc07 3/* Helpers for instruction counting code generation. */
dd5d6fe9
PB
4
5static TCGArg *icount_arg;
6static int icount_label;
7
8static inline void gen_icount_start(void)
9{
a7812ae4 10 TCGv_i32 count;
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PB
11
12 if (!use_icount)
13 return;
14
15 icount_label = gen_new_label();
a7812ae4 16 count = tcg_temp_local_new_i32();
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PB
17 tcg_gen_ld_i32(count, cpu_env, offsetof(CPUState, icount_decr.u32));
18 /* This is a horrid hack to allow fixing up the value later. */
19 icount_arg = gen_opparam_ptr + 1;
20 tcg_gen_subi_i32(count, count, 0xdeadbeef);
21
22 tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, icount_label);
23 tcg_gen_st16_i32(count, cpu_env, offsetof(CPUState, icount_decr.u16.low));
a7812ae4 24 tcg_temp_free_i32(count);
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PB
25}
26
27static void gen_icount_end(TranslationBlock *tb, int num_insns)
28{
29 if (use_icount) {
30 *icount_arg = num_insns;
31 gen_set_label(icount_label);
32 tcg_gen_exit_tb((long)tb + 2);
33 }
34}
35
86178a57 36static inline void gen_io_start(void)
dd5d6fe9 37{
a7812ae4 38 TCGv_i32 tmp = tcg_const_i32(1);
dd5d6fe9 39 tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUState, can_do_io));
a7812ae4 40 tcg_temp_free_i32(tmp);
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PB
41}
42
43static inline void gen_io_end(void)
44{
a7812ae4 45 TCGv_i32 tmp = tcg_const_i32(0);
dd5d6fe9 46 tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUState, can_do_io));
a7812ae4 47 tcg_temp_free_i32(tmp);
dd5d6fe9 48}