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| author | Yeongkyoon Lee <yeongkyoon.lee@samsung.com> | 2012-10-31 16:04:25 +0900 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-11-03 09:44:21 +0000 |
| commit | b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699 (patch) | |
| tree | 484d23d99567f7c3766854d6edf67051518cbf5d /tcg/tcg.h | |
| parent | fdbb84d1332ae0827d60f1a2ca03c7d5678c6edd (diff) | |
| download | qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.tar.gz qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.tar.bz2 qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.zip | |
tcg: Optimize qemu_ld/st by generating slow paths at the end of a block
Add optimized TCG qemu_ld/st generation which locates the code of TLB miss
cases at the end of a block after generating the other IRs.
Currently, this optimization supports only i386 and x86_64 hosts.
Signed-off-by: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg/tcg.h')
| -rw-r--r-- | tcg/tcg.h | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -188,6 +188,24 @@ typedef tcg_target_ulong TCGArg; are aliases for target_ulong and host pointer sized values respectively. */ +#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU) +/* Macros/structures for qemu_ld/st IR code optimization: + TCG_MAX_HELPER_LABELS is defined as same as OPC_BUF_SIZE in exec-all.h. */ +#define TCG_MAX_QEMU_LDST 640 + +typedef struct TCGLabelQemuLdst { + int is_ld:1; /* qemu_ld: 1, qemu_st: 0 */ + int opc:4; + int addrlo_reg; /* reg index for low word of guest virtual addr */ + int addrhi_reg; /* reg index for high word of guest virtual addr */ + int datalo_reg; /* reg index for low word to be loaded or stored */ + int datahi_reg; /* reg index for high word to be loaded or stored */ + int mem_index; /* soft MMU memory index */ + uint8_t *raddr; /* gen code addr of the next IR of qemu_ld/st IR */ + uint8_t *label_ptr[2]; /* label pointers to be updated */ +} TCGLabelQemuLdst; +#endif + #ifdef CONFIG_DEBUG_TCG #define DEBUG_TCGV 1 #endif @@ -431,6 +449,13 @@ struct TCGContext { int temps_in_use; int goto_tb_issue_mask; #endif + +#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU) + /* labels info for qemu_ld/st IRs + The labels help to generate TLB miss case codes at the end of TB */ + TCGLabelQemuLdst *qemu_ldst_labels; + int nb_qemu_ldst_labels; +#endif }; extern TCGContext tcg_ctx; @@ -634,3 +659,8 @@ extern uint8_t *code_gen_prologue; #endif void tcg_register_jit(void *buf, size_t buf_size); + +#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU) +/* Generate TB finalization at the end of block */ +void tcg_out_tb_finalize(TCGContext *s); +#endif |