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| author | Richard Henderson <richard.henderson@linaro.org> | 2019-03-28 11:54:23 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-06-10 07:03:42 -0700 |
| commit | 5e1401969b25f676fee6b1c564441759cf967a43 (patch) | |
| tree | 7ad13ea2a9043d2586c1e6f57ea5055e01354cf4 /include/exec | |
| parent | 5b146dc716cfd247f99556c04e6e46fbd67565a0 (diff) | |
| download | focaccia-qemu-5e1401969b25f676fee6b1c564441759cf967a43.tar.gz focaccia-qemu-5e1401969b25f676fee6b1c564441759cf967a43.zip | |
cpu: Move icount_decr to CPUNegativeOffsetState
Amusingly, we had already ignored the comment to keep this value at the end of CPUState. This restores the minimum negative offset from TCG_AREG0 for code generation. For the couple of uses within qom/cpu.c, without NEED_CPU_H, add a pointer from the CPUState object to the IcountDecr object within CPUNegativeOffsetState. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/cpu-all.h | 1 | ||||
| -rw-r--r-- | include/exec/cpu-defs.h | 3 | ||||
| -rw-r--r-- | include/exec/gen-icount.h | 16 |
3 files changed, 13 insertions, 7 deletions
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 5ae83405c8..253dd1d9a5 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -380,6 +380,7 @@ int cpu_exec(CPUState *cpu); static inline void cpu_set_cpustate_pointers(ArchCPU *cpu) { cpu->parent_obj.env_ptr = &cpu->env; + cpu->parent_obj.icount_decr_ptr = &cpu->neg.icount_decr; } /** diff --git a/include/exec/cpu-defs.h b/include/exec/cpu-defs.h index 921fbb4c36..c067994e5c 100644 --- a/include/exec/cpu-defs.h +++ b/include/exec/cpu-defs.h @@ -33,6 +33,7 @@ #include "exec/hwaddr.h" #endif #include "exec/memattrs.h" +#include "qom/cpu.h" #include "cpu-param.h" @@ -232,7 +233,7 @@ typedef struct CPUTLB { * before CPUArchState, as a field named "neg". */ typedef struct CPUNegativeOffsetState { - /* Empty */ + IcountDecr icount_decr; } CPUNegativeOffsetState; #endif diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h index 9cfa6ccce5..f7669b6841 100644 --- a/include/exec/gen-icount.h +++ b/include/exec/gen-icount.h @@ -5,8 +5,6 @@ /* Helpers for instruction counting code generation. */ -#define ENV_OFFSET offsetof(ArchCPU, env) - static TCGOp *icount_start_insn; static inline void gen_tb_start(TranslationBlock *tb) @@ -21,7 +19,8 @@ static inline void gen_tb_start(TranslationBlock *tb) } tcg_gen_ld_i32(count, cpu_env, - -ENV_OFFSET + offsetof(CPUState, icount_decr.u32)); + offsetof(ArchCPU, neg.icount_decr.u32) - + offsetof(ArchCPU, env)); if (tb_cflags(tb) & CF_USE_ICOUNT) { imm = tcg_temp_new_i32(); @@ -39,7 +38,8 @@ static inline void gen_tb_start(TranslationBlock *tb) if (tb_cflags(tb) & CF_USE_ICOUNT) { tcg_gen_st16_i32(count, cpu_env, - -ENV_OFFSET + offsetof(CPUState, icount_decr.u16.low)); + offsetof(ArchCPU, neg.icount_decr.u16.low) - + offsetof(ArchCPU, env)); } tcg_temp_free_i32(count); @@ -60,14 +60,18 @@ static inline void gen_tb_end(TranslationBlock *tb, int num_insns) 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_gen_st_i32(tmp, cpu_env, + offsetof(ArchCPU, parent_obj.can_do_io) - + offsetof(ArchCPU, env)); 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_gen_st_i32(tmp, cpu_env, + offsetof(ArchCPU, parent_obj.can_do_io) - + offsetof(ArchCPU, env)); tcg_temp_free_i32(tmp); } |