diff options
Diffstat (limited to 'qemu/include/exec/gen-icount.h')
-rw-r--r-- | qemu/include/exec/gen-icount.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/qemu/include/exec/gen-icount.h b/qemu/include/exec/gen-icount.h deleted file mode 100644 index 05d89d358..000000000 --- a/qemu/include/exec/gen-icount.h +++ /dev/null @@ -1,79 +0,0 @@ -#ifndef GEN_ICOUNT_H -#define GEN_ICOUNT_H 1 - -#include "qemu/timer.h" - -/* Helpers for instruction counting code generation. */ - -static TCGArg *icount_arg; -static TCGLabel *icount_label; -static TCGLabel *exitreq_label; - -static inline void gen_tb_start(TranslationBlock *tb) -{ - TCGv_i32 count, flag, imm; - int i; - - exitreq_label = gen_new_label(); - flag = tcg_temp_new_i32(); - tcg_gen_ld_i32(flag, cpu_env, - offsetof(CPUState, tcg_exit_req) - ENV_OFFSET); - tcg_gen_brcondi_i32(TCG_COND_NE, flag, 0, exitreq_label); - tcg_temp_free_i32(flag); - - if (!(tb->cflags & CF_USE_ICOUNT)) { - return; - } - - icount_label = gen_new_label(); - count = tcg_temp_local_new_i32(); - tcg_gen_ld_i32(count, cpu_env, - -ENV_OFFSET + offsetof(CPUState, icount_decr.u32)); - - imm = tcg_temp_new_i32(); - tcg_gen_movi_i32(imm, 0xdeadbeef); - - /* This is a horrid hack to allow fixing up the value later. */ - i = tcg_ctx.gen_last_op_idx; - i = tcg_ctx.gen_op_buf[i].args; - icount_arg = &tcg_ctx.gen_opparam_buf[i + 1]; - - tcg_gen_sub_i32(count, count, imm); - tcg_temp_free_i32(imm); - - tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, icount_label); - tcg_gen_st16_i32(count, cpu_env, - -ENV_OFFSET + offsetof(CPUState, icount_decr.u16.low)); - tcg_temp_free_i32(count); -} - -static void gen_tb_end(TranslationBlock *tb, int num_insns) -{ - gen_set_label(exitreq_label); - tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_REQUESTED); - - if (tb->cflags & CF_USE_ICOUNT) { - *icount_arg = num_insns; - gen_set_label(icount_label); - tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_ICOUNT_EXPIRED); - } - - /* Terminate the linked list. */ - tcg_ctx.gen_op_buf[tcg_ctx.gen_last_op_idx].next = -1; -} - -static inline void gen_io_start(void) -{ - TCGv_i32 tmp = tcg_const_i32(1); - tcg_gen_st_i32(tmp, cpu_env, -ENV_OFFSET + offsetof(CPUState, 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, -ENV_OFFSET + offsetof(CPUState, can_do_io)); - tcg_temp_free_i32(tmp); -} - -#endif |