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

   1 #ifdef HAVE_CONFIG_H
   2 # include "config.h"
   3 #endif
   4
   5 #include "php.h"
   6
   7 #ifdef HAVE_LIBJIT
   8
   9 #include "php_psi.h"
  10 #include "libjit.h"
  11
  12 #include <jit/jit.h>
  13
  14 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data);
  15
  16 static inline jit_abi_t psi_jit_abi(const char *convention) {
  17         return jit_abi_cdecl;
  18 }
  19 static inline jit_type_t psi_jit_token_type(token_t t) {
  20         switch (t) {
  21         case PSI_T_VOID:
  22                 return jit_type_void;
  23         case PSI_T_INT8:
  24                 return jit_type_sbyte;
  25         case PSI_T_UINT8:
  26                 return jit_type_ubyte;
  27         case PSI_T_INT16:
  28                 return jit_type_short;
  29         case PSI_T_UINT16:
  30                 return jit_type_ushort;
  31         case PSI_T_INT32:
  32                 return jit_type_int;
  33         case PSI_T_UINT32:
  34                 return jit_type_uint;
  35         case PSI_T_INT64:
  36                 return jit_type_long;
  37         case PSI_T_UINT64:
  38                 return jit_type_ulong;
  39         case PSI_T_BOOL:
  40                 return jit_type_sys_bool;
  41         case PSI_T_FLOAT:
  42                 return jit_type_sys_float;
  43         case PSI_T_DOUBLE:
  44                 return jit_type_sys_double;
  45         EMPTY_SWITCH_DEFAULT_CASE();
  46         }
  47 }
  48 static inline jit_type_t psi_jit_impl_type(token_t impl_type) {
  49         switch (impl_type) {
  50         case PSI_T_BOOL:
  51                 return jit_type_sbyte;
  52         case PSI_T_INT:
  53                 return jit_type_long;
  54         case PSI_T_STRING:
  55                 return jit_type_void_ptr;
  56         case PSI_T_FLOAT:
  57         case PSI_T_DOUBLE:
  58                 return jit_type_sys_double;
  59         EMPTY_SWITCH_DEFAULT_CASE();
  60         }
  61 }
  62 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  63         return psi_jit_token_type(real_decl_type(type)->type);
  64 }
  65 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  66         if (darg->var->pointer_level) {
  67                 return jit_type_void_ptr;
  68         } else {
  69                 return psi_jit_decl_type(darg->type);
  70         }
  71 }
  72
  73 typedef struct PSI_LibjitContext {
  74         jit_context_t jit;
  75         jit_type_t signature;
  76         struct {
  77                 struct PSI_LibjitData **list;
  78                 size_t count;
  79         } data;
  80 } PSI_LibjitContext;
  81
  82 typedef struct PSI_LibjitCall {
  83         void *closure;
  84         jit_type_t signature;
  85         void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
  86 } PSI_LibjitCall;
  87
  88 typedef struct PSI_LibjitData {
  89         PSI_LibjitContext *context;
  90         impl *impl;
  91         zend_internal_arg_info *arginfo;
  92 } PSI_LibjitData;
  93
  94 static inline PSI_LibjitCall *PSI_LibjitCallAlloc(PSI_Context *C, decl *decl) {
  95         size_t i, c = decl->args ? decl->args->count : 0;
  96         PSI_LibjitCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
  97
  98         for (i = 0; i < c; ++i) {
  99                 call->params[i] = psi_jit_decl_arg_type(decl->args->args[i]);
 100         }
 101         call->params[c] = NULL;
 102
 103         decl->call.info = call;
 104         decl->call.rval = decl->func->ptr;
 105         decl->call.argc = c;
 106         decl->call.args = (void **) &call->params[c+1];
 107
 108         call->signature = jit_type_create_signature(
 109                         psi_jit_abi(decl->abi->convention),
 110                         psi_jit_decl_arg_type(decl->func),
 111                         (jit_type_t *) call->params, c, 1);
 112         return call;
 113 }
 114
 115 static inline void PSI_LibjitCallInitClosure(PSI_Context *C, PSI_LibjitCall *call, impl *impl) {
 116         PSI_LibjitContext *context = C->context;
 117         call->closure = jit_closure_create(context->jit, context->signature,
 118                         &psi_jit_handler, impl);
 119 }
 120
 121 static inline void PSI_LibjitCallFree(PSI_LibjitCall *call) {
 122         jit_type_free(call->signature);
 123         free(call);
 124 }
 125
 126 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 127         jit_type_t params[] = {
 128                 jit_type_void_ptr,
 129                 jit_type_void_ptr
 130         };
 131
 132         if (!L) {
 133                 L = malloc(sizeof(*L));
 134         }
 135         memset(L, 0, sizeof(*L));
 136
 137         L->jit = jit_context_create();
 138         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void,
 139                         params, 2, 1);
 140
 141         return L;
 142 }
 143
 144 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 145         jit_type_free(L->signature);
 146         jit_context_destroy(L->jit);
 147 }
 148
 149 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 150         if (*L) {
 151                 PSI_LibjitContextDtor(*L);
 152                 free(*L);
 153                 *L = NULL;
 154         }
 155 }
 156
 157 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
 158 {
 159         psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
 160 }
 161
 162 static void psi_jit_init(PSI_Context *C)
 163 {
 164         C->context = PSI_LibjitContextInit(NULL);
 165 }
 166
 167 static void psi_jit_dtor(PSI_Context *C)
 168 {
 169         if (C->decls) {
 170                 size_t i;
 171
 172                 for (i = 0; i < C->decls->count; ++i) {
 173                         decl *decl = C->decls->list[i];
 174
 175                         PSI_LibjitCallFree(decl->call.info);
 176                 }
 177         }
 178         PSI_LibjitContextFree((void *) &C->context);
 179 }
 180
 181 static zend_function_entry *psi_jit_compile(PSI_Context *C)
 182 {
 183         size_t i, j = 0;
 184         zend_function_entry *zfe;
 185         PSI_LibjitContext *ctx = C->context;
 186
 187         if (!C->impls) {
 188                 return NULL;
 189         }
 190
 191         zfe = calloc(C->impls->count + 1, sizeof(*zfe));
 192         jit_context_build_start(ctx->jit);
 193
 194         for (i = 0; i < C->impls->count; ++i) {
 195                 zend_function_entry *zf = &zfe[j];
 196                 PSI_LibjitCall *call;
 197                 impl *impl = C->impls->list[i];
 198
 199                 if (!impl->decl) {
 200                         continue;
 201                 }
 202
 203                 call = PSI_LibjitCallAlloc(C, impl->decl);
 204                 PSI_LibjitCallInitClosure(C, call, impl);
 205
 206                 zf->fname = impl->func->name + (impl->func->name[0] == '\\');
 207                 zf->num_args = impl->func->args->count;
 208                 zf->handler = call->closure;
 209                 zf->arg_info = psi_internal_arginfo(impl);
 210                 ++j;
 211         }
 212
 213         for (i = 0; i < C->decls->count; ++i) {
 214                 decl *decl = C->decls->list[i];
 215
 216                 if (decl->impl) {
 217                         continue;
 218                 }
 219
 220                 PSI_LibjitCallAlloc(C, decl);
 221         }
 222
 223         jit_context_build_end(ctx->jit);
 224
 225         return zfe;
 226 }
 227
 228 static void psi_jit_call(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va) {
 229         PSI_LibjitCall *call = decl_call->info;
 230
 231         if (va) {
 232                 jit_type_t signature;
 233                 size_t i, nfixedargs = decl_call->argc, ntotalargs = nfixedargs + va->args->count;
 234                 void **params = calloc(2 * ntotalargs + 2, sizeof(void *));
 235
 236                 for (i = 0; i < nfixedargs; ++i) {
 237                         params[i] = call->params[i];
 238                         params[i + ntotalargs + 1] = call->params[i + nfixedargs + 1];
 239                 }
 240                 for (i = 0; i < va->args->count; ++i) {
 241                         params[nfixedargs + i] = psi_jit_impl_type(va->types[i]);
 242                         params[nfixedargs + i + ntotalargs + 1] = &va->values[i];
 243                 }
 244
 245                 signature = jit_type_create_signature(
 246                                 jit_type_get_abi(call->signature),
 247                                 jit_type_get_return(call->signature),
 248                                 (jit_type_t *) params, ntotalargs, 1);
 249                 ZEND_ASSERT(signature);
 250
 251                 jit_apply(signature, decl_call->sym, &params[ntotalargs + 1],
 252                                                 nfixedargs, decl_call->rval);
 253                 jit_type_free(signature);
 254                 free(params);
 255         } else {
 256                 jit_apply(call->signature, decl_call->sym, decl_call->args,
 257                                 decl_call->argc, decl_call->rval);
 258         }
 259 }
 260
 261 static PSI_ContextOps ops = {
 262         psi_jit_init,
 263         psi_jit_dtor,
 264         psi_jit_compile,
 265         psi_jit_call,
 266 };
 267
 268 PSI_ContextOps *PSI_Libjit(void)
 269 {
 270         return &ops;
 271 }
 272
 273 #endif /* HAVE_LIBJIT */