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         default:
  15                 ZEND_ASSERT(0);
  16                 /* no break */
  17         case PSI_T_VOID:
  18                 return jit_type_void;
  19         case PSI_T_INT8:
  20                 return jit_type_sbyte;
  21         case PSI_T_UINT8:
  22                 return jit_type_ubyte;
  23         case PSI_T_INT16:
  24                 return jit_type_short;
  25         case PSI_T_UINT16:
  26                 return jit_type_ushort;
  27         case PSI_T_INT32:
  28                 return jit_type_int;
  29         case PSI_T_UINT32:
  30                 return jit_type_uint;
  31         case PSI_T_INT64:
  32                 return jit_type_long;
  33         case PSI_T_UINT64:
  34                 return jit_type_ulong;
  35         case PSI_T_BOOL:
  36                 return jit_type_sys_bool;
  37         case PSI_T_INT:
  38                 return jit_type_sys_int;
  39         case PSI_T_FLOAT:
  40                 return jit_type_sys_float;
  41         case PSI_T_DOUBLE:
  42                 return jit_type_sys_double;
  43         }
  44 }
  45 static inline jit_type_t psi_jit_decl_type(decl_type *type) {
  46         return psi_jit_token_type(real_decl_type(type)->type);
  47 }
  48 static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
  49         if (darg->var->pointer_level) {
  50                 return jit_type_void_ptr;
  51         } else {
  52                 return psi_jit_decl_type(darg->type);
  53         }
  54 }
  55
  56 typedef struct PSI_LibjitContext {
  57         jit_context_t jit;
  58         jit_type_t signature;
  59         struct {
  60                 struct PSI_LibjitData **list;
  61                 size_t count;
  62         } data;
  63 } PSI_LibjitContext;
  64
  65 typedef struct PSI_LibjitCall {
  66         void *closure;
  67         jit_type_t signature;
  68         jit_type_t params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
  69 } PSI_LibjitCall;
  70
  71 typedef struct PSI_LibjitData {
  72         PSI_LibjitContext *context;
  73         impl *impl;
  74         zend_internal_arg_info *arginfo;
  75 } PSI_LibjitData;
  76
  77 static inline PSI_LibjitCall *PSI_LibjitCallAlloc(PSI_Context *C, decl *decl) {
  78         size_t i, c = decl->args ? decl->args->count : 0;
  79         PSI_LibjitCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
  80
  81         for (i = 0; i < c; ++i) {
  82                 call->params[i] = psi_jit_decl_arg_type(decl->args->args[i]);
  83         }
  84         call->params[c] = NULL;
  85
  86         decl->call.info = call;
  87         decl->call.args = (void **) &call->params[c+1];
  88
  89         call->signature = jit_type_create_signature(
  90                         psi_jit_abi(decl->abi->convention),
  91                         psi_jit_decl_arg_type(decl->func),
  92                         call->params, c, 1);
  93         return call;
  94 }
  95
  96 static inline void PSI_LibjitCallInitClosure(PSI_Context *C, PSI_LibjitCall *call, impl *impl) {
  97         PSI_LibjitContext *context = C->context;
  98         call->closure = jit_closure_create(context->jit, context->signature,
  99                         &psi_jit_handler, impl);
 100 }
 101
 102 static inline void PSI_LibjitCallFree(PSI_LibjitCall *call) {
 103         jit_type_free(call->signature);
 104 }
 105
 106 static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 107         jit_type_t params[] = {
 108                 jit_type_void_ptr,
 109                 jit_type_void_ptr
 110         };
 111
 112         if (!L) {
 113                 L = malloc(sizeof(*L));
 114         }
 115         memset(L, 0, sizeof(*L));
 116
 117         L->jit = jit_context_create();
 118         L->signature = jit_type_create_signature(jit_abi_cdecl, jit_type_void,
 119                         params, 2, 1);
 120
 121         return L;
 122 }
 123
 124 static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
 125         jit_type_free(L->signature);
 126         jit_context_destroy(L->jit);
 127 }
 128
 129 static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
 130         if (*L) {
 131                 PSI_LibjitContextDtor(*L);
 132                 free(*L);
 133                 *L = NULL;
 134         }
 135 }
 136
 137 static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
 138 {
 139         psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
 140 }
 141
 142 static void psi_jit_init(PSI_Context *C)
 143 {
 144         C->context = PSI_LibjitContextInit(NULL);
 145 }
 146
 147 static void psi_jit_dtor(PSI_Context *C)
 148 {
 149         size_t i;
 150
 151         for (i = 0; i < C->decls->count; ++i) {
 152                 decl *decl = C->decls->list[i];
 153
 154                 PSI_LibjitCallFree(decl->call.info);
 155         }
 156         PSI_LibjitContextFree((void *) &C->context);
 157 }
 158
 159 static zend_function_entry *psi_jit_compile(PSI_Context *C)
 160 {
 161         size_t i, j = 0;
 162         zend_function_entry *zfe;
 163         PSI_LibjitContext *ctx = C->context;
 164
 165         if (!C->impls) {
 166                 return NULL;
 167         }
 168
 169         zfe = calloc(C->impls->count + 1, sizeof(*zfe));
 170         jit_context_build_start(ctx->jit);
 171
 172         for (i = 0; i < C->impls->count; ++i) {
 173                 zend_function_entry *zf = &zfe[j];
 174                 PSI_LibjitCall *call;
 175                 impl *impl = C->impls->list[i];
 176
 177                 if (!impl->decl) {
 178                         continue;
 179                 }
 180
 181                 call = PSI_LibjitCallAlloc(C, impl->decl);
 182                 PSI_LibjitCallInitClosure(C, call, impl);
 183
 184                 zf->fname = impl->func->name + (impl->func->name[0] == '\\');
 185                 zf->num_args = impl->func->args->count;
 186                 zf->handler = call->closure;
 187                 zf->arg_info = psi_internal_arginfo(impl);
 188                 ++j;
 189         }
 190
 191         for (i = 0; i < C->decls->count; ++i) {
 192                 decl *decl = C->decls->list[i];
 193
 194                 if (decl->impl) {
 195                         continue;
 196                 }
 197
 198                 PSI_LibjitCallAlloc(C, decl);
 199         }
 200
 201         jit_context_build_end(ctx->jit);
 202
 203         return zfe;
 204 }
 205
 206 static void psi_jit_call(PSI_Context *C, impl_val *ret_val, decl *decl) {
 207         PSI_LibjitCall *call = decl->call.info;
 208
 209         jit_apply(call->signature, decl->call.sym, decl->call.args,
 210                         decl->args->count, ret_val);
 211 }
 212
 213 static PSI_ContextOps ops = {
 214         psi_jit_init,
 215         psi_jit_dtor,
 216         psi_jit_compile,
 217         psi_jit_call,
 218 };
 219
 220 PSI_ContextOps *PSI_Libjit(void)
 221 {
 222         return &ops;
 223 }