MIPS: Add interpreter. Enable MIPS build rules.

src/lj_dispatch.h

@@ -12,6 +12,41 @@
 #include "lj_jit.h"
 #endif
 
+#if LJ_TARGET_MIPS
+/* Need our own global offset table for the dreaded MIPS calling conventions. */
+#if LJ_HASJIT
+#define JITGOTDEF(_)	_(lj_trace_exit) _(lj_trace_hot)
+#else
+#define JITGOTDEF(_)
+#endif
+#if LJ_HASFFI
+#define FFIGOTDEF(_) \
+  _(lj_meta_equal_cd) _(lj_ccallback_enter) _(lj_ccallback_leave)
+#else
+#define FFIGOTDEF(_)
+#endif
+#define GOTDEF(_) \
+  _(floor) _(ceil) _(trunc) _(log) _(log10) _(exp) _(sin) _(cos) _(tan) \
+  _(asin) _(acos) _(atan) _(sinh) _(cosh) _(tanh) _(frexp) _(modf) _(atan2) \
+  _(pow) _(fmod) _(ldexp) \
+  _(lj_dispatch_call) _(lj_dispatch_ins) _(lj_err_throw) \
+  _(lj_ffh_coroutine_wrap_err) _(lj_func_closeuv) _(lj_func_newL_gc) \
+  _(lj_gc_barrieruv) _(lj_gc_step) _(lj_gc_step_fixtop) _(lj_meta_arith) \
+  _(lj_meta_call) _(lj_meta_cat) _(lj_meta_comp) _(lj_meta_equal) \
+  _(lj_meta_for) _(lj_meta_len) _(lj_meta_tget) _(lj_meta_tset) \
+  _(lj_state_growstack) _(lj_str_fromnum) _(lj_str_fromnumber) _(lj_str_new) \
+  _(lj_tab_dup) _(lj_tab_get) _(lj_tab_getinth) _(lj_tab_len) _(lj_tab_new) \
+  _(lj_tab_newkey) _(lj_tab_next) _(lj_tab_reasize) \
+  JITGOTDEF(_) FFIGOTDEF(_)
+
+enum {
+#define GOTENUM(name) LJ_GOT_##name,
+GOTDEF(GOTENUM)
+#undef GOTENUM
+  LJ_GOT__MAX
+};
+#endif
+
 /* Type of hot counter. Must match the code in the assembler VM. */
 /* 16 bits are sufficient. Only 0.0015% overhead with maximum slot penalty. */
 typedef uint16_t HotCount;
@@ -35,6 +70,9 @@ typedef uint16_t HotCount;
 typedef struct GG_State {
   lua_State L;				/* Main thread. */
   global_State g;			/* Global state. */
+#if LJ_TARGET_MIPS
+  ASMFunction got[LJ_GOT__MAX];		/* Global offset table. */
+#endif
 #if LJ_HASJIT
   jit_State J;				/* JIT state. */
   HotCount hotcount[HOTCOUNT_SIZE];	/* Hot counters. */