diff options
Diffstat (limited to 'qemu/tcg/tcg-be-ldst.h')
-rw-r--r-- | qemu/tcg/tcg-be-ldst.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/qemu/tcg/tcg-be-ldst.h b/qemu/tcg/tcg-be-ldst.h deleted file mode 100644 index 17777aec5..000000000 --- a/qemu/tcg/tcg-be-ldst.h +++ /dev/null @@ -1,97 +0,0 @@ -/* - * TCG Backend Data: load-store optimization only. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifdef CONFIG_SOFTMMU - -typedef struct TCGLabelQemuLdst { - bool is_ld; /* qemu_ld: true, qemu_st: false */ - TCGMemOpIdx oi; - TCGType type; /* result type of a load */ - TCGReg addrlo_reg; /* reg index for low word of guest virtual addr */ - TCGReg addrhi_reg; /* reg index for high word of guest virtual addr */ - TCGReg datalo_reg; /* reg index for low word to be loaded or stored */ - TCGReg datahi_reg; /* reg index for high word to be loaded or stored */ - tcg_insn_unit *raddr; /* gen code addr of the next IR of qemu_ld/st IR */ - tcg_insn_unit *label_ptr[2]; /* label pointers to be updated */ - struct TCGLabelQemuLdst *next; -} TCGLabelQemuLdst; - -typedef struct TCGBackendData { - TCGLabelQemuLdst *labels; -} TCGBackendData; - - -/* - * Initialize TB backend data at the beginning of the TB. - */ - -static inline void tcg_out_tb_init(TCGContext *s) -{ - s->be->labels = NULL; -} - -/* - * Generate TB finalization at the end of block - */ - -static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l); -static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l); - -static bool tcg_out_tb_finalize(TCGContext *s) -{ - TCGLabelQemuLdst *lb; - - /* qemu_ld/st slow paths */ - for (lb = s->be->labels; lb != NULL; lb = lb->next) { - if (lb->is_ld) { - tcg_out_qemu_ld_slow_path(s, lb); - } else { - tcg_out_qemu_st_slow_path(s, lb); - } - - /* Test for (pending) buffer overflow. The assumption is that any - one operation beginning below the high water mark cannot overrun - the buffer completely. Thus we can test for overflow after - generating code without having to check during generation. */ - if (unlikely((void *)s->code_ptr > s->code_gen_highwater)) { - return false; - } - } - return true; -} - -/* - * Allocate a new TCGLabelQemuLdst entry. - */ - -static inline TCGLabelQemuLdst *new_ldst_label(TCGContext *s) -{ - TCGBackendData *be = s->be; - TCGLabelQemuLdst *l = tcg_malloc(sizeof(*l)); - - l->next = be->labels; - be->labels = l; - return l; -} -#else -#include "tcg-be-null.h" -#endif /* CONFIG_SOFTMMU */ |