git.m6w6.name Git - m6w6/ext-psi/blob - src/libjit.c

   1 #include "php.h"
   2 #include "php_psi.h"
   3 #include "libjit.h"
   4
   5 #include <jit/jit.h>
   6
   7 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data);
   8
   9 static inline jit_abi_t psi_jit_abi(const char *convention) {
  10         return jit_abi_cdecl;
  11 }
  12 static inline jit_type_t psi_jit_token_type(token_t t) {
  13         switch (t) {
  14         case PSI_T_VOID:
  15                 return jit_type_void;
  16         case PSI_T_INT8:
  17                 return jit_type_sbyte;
  18         case PSI_T_UINT8:
  19                 return jit_type_ubyte;
  20         case PSI_T_INT16:
  21                 return jit_type_short;
  22         case PSI_T_UINT16:
  23                 return jit_type_ushort;
  24         case PSI_T_INT32:
  25                 return jit_type_int;
  26         case PSI_T_UINT32:
  27                 return jit_type_uint;
  28         case PSI_T_INT64:
  29                 return jit_type_long;
  30         case PSI_T_UINT64:
  31                 return jit_type_ulong;
  32         case PSI_T_BOOL:
  33                 return jit_type_sys_bool;
  34         case PSI_T_FLOAT:
  35                 return jit_type_sys_float;
  36         case PSI_T_DOUBLE:
  37                 return jit_type_sys_double;
  38         EMPTY_SWITCH_DEFAULT_CASE();
  39         }
  40 }
  41 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  42         return psi_jit_token_type(real_decl_type(type)->type);
  43 }
  44 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  45         if (darg->var->pointer_level) {
  46                 return jit_type_void_ptr;
  47         } else {
  48                 return psi_jit_decl_type(darg->type);
  49         }
  50 }
  51
  52 typedef struct PSI_LibjitContext {
  53         jit_context_t jit;
  54         jit_type_t signature;
  55         struct {
  56                 struct PSI_LibjitData **list;
  57                 size_t count;
  58         } data;
  59 } PSI_LibjitContext;
  60
  61 typedef struct PSI_LibjitCall {
  62         void *closure;
  63         jit_type_t signature;
  64         jit_type_t params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
  65 } PSI_LibjitCall;
  66
  67 typedef struct PSI_LibjitData {
  68         PSI_LibjitContext *context;
  69         impl *impl;
  70         zend_internal_arg_info *arginfo;
  71 } PSI_LibjitData;
  72
  73 static inline PSI_LibjitCall *PSI_LibjitCallAlloc(PSI_Context *C, decl *decl) {
  74         size_t i, c = decl->args ? decl->args->count : 0;
  75         PSI_LibjitCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
  76
  77         for (i = 0; i < c; ++i) {
  78                 call->params[i] = psi_jit_decl_arg_type(decl->args->args[i]);
  79         }
  80         call->params[c] = NULL;
  81
  82         decl->call.info = call;
  83         decl->call.args = (void **) &call->params[c+1];
  84
  85         call->signature = jit_type_create_signature(
  86                         psi_jit_abi(decl->abi->convention),
  87                         psi_jit_decl_arg_type(decl->func),
  88                         call->params, c, 1);
  89         return call;
  90 }
  91
  92 static inline void PSI_LibjitCallInitClosure(PSI_Context *C, PSI_LibjitCall *call, impl *impl) {
  93         PSI_LibjitContext *context = C->context;
  94         call->closure = jit_closure_create(context->jit, context->signature,
  95                         &psi_jit_handler, impl);
  96 }
  97
  98 static inline void PSI_LibjitCallFree(PSI_LibjitCall *call) {
  99         jit_type_free(call->signature);
 100 }
 101
 102 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 103         jit_type_t params[] = {
 104                 jit_type_void_ptr,
 105                 jit_type_void_ptr
 106         };
 107
 108         if (!L) {
 109                 L = malloc(sizeof(*L));
 110         }
 111         memset(L, 0, sizeof(*L));
 112
 113         L->jit = jit_context_create();
 114         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void,
 115                         params, 2, 1);
 116
 117         return L;
 118 }
 119
 120 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 121         jit_type_free(L->signature);
 122         jit_context_destroy(L->jit);
 123 }
 124
 125 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 126         if (*L) {
 127                 PSI_LibjitContextDtor(*L);
 128                 free(*L);
 129                 *L = NULL;
 130         }
 131 }
 132
 133 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
 134 {
 135         psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
 136 }
 137
 138 static void psi_jit_init(PSI_Context *C)
 139 {
 140         C->context = PSI_LibjitContextInit(NULL);
 141 }
 142
 143 static void psi_jit_dtor(PSI_Context *C)
 144 {
 145         size_t i;
 146
 147         for (i = 0; i < C->decls->count; ++i) {
 148                 decl *decl = C->decls->list[i];
 149
 150                 PSI_LibjitCallFree(decl->call.info);
 151         }
 152         PSI_LibjitContextFree((void *) &C->context);
 153 }
 154
 155 static zend_function_entry *psi_jit_compile(PSI_Context *C)
 156 {
 157         size_t i, j = 0;
 158         zend_function_entry *zfe;
 159         PSI_LibjitContext *ctx = C->context;
 160
 161         if (!C->impls) {
 162                 return NULL;
 163         }
 164
 165         zfe = calloc(C->impls->count + 1, sizeof(*zfe));
 166         jit_context_build_start(ctx->jit);
 167
 168         for (i = 0; i < C->impls->count; ++i) {
 169                 zend_function_entry *zf = &zfe[j];
 170                 PSI_LibjitCall *call;
 171                 impl *impl = C->impls->list[i];
 172
 173                 if (!impl->decl) {
 174                         continue;
 175                 }
 176
 177                 call = PSI_LibjitCallAlloc(C, impl->decl);
 178                 PSI_LibjitCallInitClosure(C, call, impl);
 179
 180                 zf->fname = impl->func->name + (impl->func->name[0] == '\\');
 181                 zf->num_args = impl->func->args->count;
 182                 zf->handler = call->closure;
 183                 zf->arg_info = psi_internal_arginfo(impl);
 184                 ++j;
 185         }
 186
 187         for (i = 0; i < C->decls->count; ++i) {
 188                 decl *decl = C->decls->list[i];
 189
 190                 if (decl->impl) {
 191                         continue;
 192                 }
 193
 194                 PSI_LibjitCallAlloc(C, decl);
 195         }
 196
 197         jit_context_build_end(ctx->jit);
 198
 199         return zfe;
 200 }
 201
 202 static void psi_jit_call(PSI_Context *C, impl_val *ret_val, decl *decl) {
 203         PSI_LibjitCall *call = decl->call.info;
 204
 205         jit_apply(call->signature, decl->call.sym, decl->call.args,
 206                         decl->args->count, ret_val);
 207 }
 208
 209 static PSI_ContextOps ops = {
 210         psi_jit_init,
 211         psi_jit_dtor,
 212         psi_jit_compile,
 213         psi_jit_call,
 214 };
 215
 216 PSI_ContextOps *PSI_Libjit(void)
 217 {
 218         return &ops;
 219 }