2 * TCG Backend Data: load-store optimization only.
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25 typedef struct TCGLabelQemuLdst {
26 bool is_ld; /* qemu_ld: true, qemu_st: false */
28 TCGType type; /* result type of a load */
29 TCGReg addrlo_reg; /* reg index for low word of guest virtual addr */
30 TCGReg addrhi_reg; /* reg index for high word of guest virtual addr */
31 TCGReg datalo_reg; /* reg index for low word to be loaded or stored */
32 TCGReg datahi_reg; /* reg index for high word to be loaded or stored */
33 tcg_insn_unit *raddr; /* gen code addr of the next IR of qemu_ld/st IR */
34 tcg_insn_unit *label_ptr[2]; /* label pointers to be updated */
35 struct TCGLabelQemuLdst *next;
38 typedef struct TCGBackendData {
39 TCGLabelQemuLdst *labels;
44 * Initialize TB backend data at the beginning of the TB.
47 static inline void tcg_out_tb_init(TCGContext *s)
53 * Generate TB finalization at the end of block
56 static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l);
57 static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l);
59 static void tcg_out_tb_finalize(TCGContext *s)
63 /* qemu_ld/st slow paths */
64 for (lb = s->be->labels; lb != NULL; lb = lb->next) {
66 tcg_out_qemu_ld_slow_path(s, lb);
68 tcg_out_qemu_st_slow_path(s, lb);
74 * Allocate a new TCGLabelQemuLdst entry.
77 static inline TCGLabelQemuLdst *new_ldst_label(TCGContext *s)
79 TCGBackendData *be = s->be;
80 TCGLabelQemuLdst *l = tcg_malloc(sizeof(*l));
87 #include "tcg-be-null.h"
88 #endif /* CONFIG_SOFTMMU */