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author | Paolo Bonzini <pbonzini@redhat.com> | 2012-12-17 18:19:49 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2012-12-19 08:31:31 +0100 |
commit | 022c62cbbcf1ff40b23c92874f8670cddfec2414 (patch) | |
tree | 3ce0d762aec7ed41ecc486156cffcc0fbbd16d26 /include/exec/gen-icount.h | |
parent | 737e150e89c44c6b33691a627e24bac7fb58f349 (diff) | |
download | hqemu-022c62cbbcf1ff40b23c92874f8670cddfec2414.zip hqemu-022c62cbbcf1ff40b23c92874f8670cddfec2414.tar.gz |
exec: move include files to include/exec/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/exec/gen-icount.h')
-rw-r--r-- | include/exec/gen-icount.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h new file mode 100644 index 0000000..1541f0b --- /dev/null +++ b/include/exec/gen-icount.h @@ -0,0 +1,53 @@ +#ifndef GEN_ICOUNT_H +#define GEN_ICOUNT_H 1 + +#include "qemu-timer.h" + +/* Helpers for instruction counting code generation. */ + +static TCGArg *icount_arg; +static int icount_label; + +static inline void gen_icount_start(void) +{ + TCGv_i32 count; + + if (!use_icount) + return; + + icount_label = gen_new_label(); + count = tcg_temp_local_new_i32(); + tcg_gen_ld_i32(count, cpu_env, offsetof(CPUArchState, icount_decr.u32)); + /* This is a horrid hack to allow fixing up the value later. */ + icount_arg = tcg_ctx.gen_opparam_ptr + 1; + tcg_gen_subi_i32(count, count, 0xdeadbeef); + + tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, icount_label); + tcg_gen_st16_i32(count, cpu_env, offsetof(CPUArchState, icount_decr.u16.low)); + tcg_temp_free_i32(count); +} + +static void gen_icount_end(TranslationBlock *tb, int num_insns) +{ + if (use_icount) { + *icount_arg = num_insns; + gen_set_label(icount_label); + tcg_gen_exit_tb((tcg_target_long)tb + 2); + } +} + +static inline void gen_io_start(void) +{ + TCGv_i32 tmp = tcg_const_i32(1); + tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUArchState, can_do_io)); + tcg_temp_free_i32(tmp); +} + +static inline void gen_io_end(void) +{ + TCGv_i32 tmp = tcg_const_i32(0); + tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUArchState, can_do_io)); + tcg_temp_free_i32(tmp); +} + +#endif |