X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-psi;a=blobdiff_plain;f=src%2Flibjit.c;h=513d5477e63b73b7ad8194c2f1f56c1fd01375fc;hp=45ee8e766c34a8153439cee6351cb4617c4782ee;hb=7a210012b049742d95928175e4ebb0e565f9bda7;hpb=61918592ab618c073b9846783ce79fed9f26c5f7

diff --git a/src/libjit.c b/src/libjit.c
index 45ee8e7..513d547 100644
--- a/src/libjit.c
+++ b/src/libjit.c
@@ -1,23 +1,55 @@
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
+/*******************************************************************************
+ Copyright (c) 2016, Michael Wallner <mike@php.net>.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************/
+
+#include "php_psi_stdinc.h"
+#include "context.h"
+#include "call.h"
 #include "php.h"
 
 #ifdef HAVE_LIBJIT
 
-#include "php_psi.h"
-#include "libjit.h"
-
 #include <jit/jit.h>
 
-static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data);
+static inline jit_type_t psi_jit_decl_arg_type(struct psi_decl_arg *darg);
 
-static inline jit_abi_t psi_jit_abi(const char *convention) {
+static inline jit_abi_t psi_jit_abi(const char *convention)
+{
+	if (!strcasecmp(convention, "stdcall")) {
+		return jit_abi_stdcall;
+	}
+	if (!strcasecmp(convention, "fastcall")) {
+		return jit_abi_fastcall;
+	}
 	return jit_abi_cdecl;
 }
-static inline jit_type_t psi_jit_token_type(token_t t) {
+static inline jit_type_t psi_jit_token_type(token_t t)
+{
 	switch (t) {
+	default:
+		assert(0);
+		/* no break */
 	case PSI_T_VOID:
 		return jit_type_void;
 	case PSI_T_INT8:
@@ -38,17 +70,159 @@ static inline jit_type_t psi_jit_token_type(token_t t) {
 		return jit_type_ulong;
 	case PSI_T_BOOL:
 		return jit_type_sys_bool;
+	case PSI_T_INT:
+	case PSI_T_ENUM:
+		return jit_type_sys_int;
+	case PSI_T_LONG:
+		return jit_type_sys_long;
 	case PSI_T_FLOAT:
 		return jit_type_sys_float;
 	case PSI_T_DOUBLE:
 		return jit_type_sys_double;
-	EMPTY_SWITCH_DEFAULT_CASE();
+#ifdef HAVE_LONG_DOUBLE
+	case PSI_T_LONG_DOUBLE:
+		return jit_type_sys_long_double;
+#endif
+	case PSI_T_POINTER:
+	case PSI_T_FUNCTION:
+		return jit_type_void_ptr;
+	}
+}
+static inline jit_type_t psi_jit_impl_type(token_t impl_type)
+{
+	switch (impl_type) {
+	case PSI_T_BOOL:
+		return jit_type_sbyte;
+	case PSI_T_INT:
+		return jit_type_long;
+	case PSI_T_STRING:
+		return jit_type_void_ptr;
+	case PSI_T_FLOAT:
+	case PSI_T_DOUBLE:
+		return jit_type_sys_double;
+	EMPTY_SWITCH_DEFAULT_CASE()
+		;
+	}
+	return NULL;
+}
+
+struct psi_jit_struct_type {
+	jit_type_t strct;
+	jit_type_t *fields;
+};
+
+static void psi_jit_struct_type_dtor(void *ptr)
+{
+	struct psi_jit_struct_type *type = ptr;
+	jit_type_t strct = type->strct;
+	unsigned i, n = jit_type_num_fields(strct);
+
+	for (i = 0; i < n; ++i) {
+		jit_type_t field = jit_type_get_field(strct, i);
+
+		jit_type_free(field);
 	}
+	jit_type_free(strct);
+	free(type->fields);
+	free(type);
 }
-static inline jit_type_t psi_jit_decl_type(decl_type *type) {
-	return psi_jit_token_type(real_decl_type(type)->type);
+
+static size_t psi_jit_struct_type_pad(jit_type_t *els, size_t padding)
+{
+	size_t i;
+
+	for (i = 0; i < padding; ++i) {
+		*els++ = jit_type_copy(jit_type_sys_char);
+	}
+
+	return padding;
 }
-static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
+
+static unsigned psi_jit_struct_type_elements(struct psi_decl_struct *strct,
+		jit_type_t **fields)
+{
+	size_t i = 0, argc = psi_plist_count(strct->args), nels = 0, offset = 0,
+			maxalign = 0, last_arg_pos = -1;
+	struct psi_decl_arg *darg;
+
+	*fields = calloc(argc + 1, sizeof(*fields));
+
+	while (psi_plist_get(strct->args, i++, &darg)) {
+		jit_type_t type;
+		size_t padding, alignment;
+
+		if (darg->layout->pos == last_arg_pos) {
+			/* skip bit fields */
+			continue;
+		}
+		last_arg_pos = darg->layout->pos;
+
+		type = jit_type_copy(psi_jit_decl_arg_type(darg));
+
+		if ((alignment = jit_type_get_alignment(type)) > maxalign) {
+			maxalign = alignment;
+		}
+
+		assert(jit_type_get_size(type) == darg->layout->len);
+		if ((padding = psi_offset_padding(darg->layout->pos - offset, alignment))) {
+			if (nels + padding > argc) {
+				argc += padding;
+				*fields = realloc(*fields, (argc + 1) * sizeof(*fields));
+			}
+			psi_jit_struct_type_pad(&(*fields)[nels], padding);
+			nels += padding;
+			offset += padding;
+		}
+		assert(offset == darg->layout->pos);
+
+		offset = (offset + darg->layout->len + alignment - 1)
+				& ~(alignment - 1);
+		(*fields)[nels++] = type;
+	}
+
+	/* apply struct alignment padding */
+	offset = (offset + maxalign - 1) & ~(maxalign - 1);
+
+	assert(offset <= strct->size);
+	if (offset < strct->size) {
+		nels += psi_jit_struct_type_pad(&(*fields)[nels], strct->size - offset);
+	}
+
+	return nels;
+}
+static inline jit_type_t psi_jit_decl_type(struct psi_decl_type *type)
+{
+	struct psi_decl_type *real = psi_decl_type_get_real(type);
+
+	switch (real->type) {
+	case PSI_T_STRUCT:
+		if (!real->real.strct->engine.type) {
+			unsigned count;
+			struct psi_jit_struct_type *type = calloc(1, sizeof(*type));
+			jit_type_t strct, *fields = NULL;
+
+			count = psi_jit_struct_type_elements(real->real.strct, &type->fields);
+			type->strct = jit_type_create_struct(type->fields, count, 0);
+
+			real->real.strct->engine.type = type;
+			real->real.strct->engine.dtor = psi_jit_struct_type_dtor;
+		}
+
+		return real->real.strct->engine.type;
+
+	case PSI_T_UNION:
+		{
+			struct psi_decl_arg *arg;
+			psi_plist_get(real->real.unn->args, 0, &arg);
+			return psi_jit_decl_arg_type(arg);
+		}
+
+	default:
+		return psi_jit_token_type(real->type);
+	}
+}
+static inline jit_type_t psi_jit_decl_arg_type(struct psi_decl_arg *darg)
+{
 	if (darg->var->pointer_level) {
 		return jit_type_void_ptr;
 	} else {
@@ -56,61 +230,106 @@ static inline jit_type_t psi_jit_decl_arg_type(decl_arg *darg) {
 	}
 }
 
-typedef struct PSI_LibjitContext {
+struct psi_jit_context {
 	jit_context_t jit;
 	jit_type_t signature;
-	struct {
-		struct PSI_LibjitData **list;
-		size_t count;
-	} data;
-} PSI_LibjitContext;
+};
 
-typedef struct PSI_LibjitCall {
+struct psi_jit_call {
+	struct psi_context *context;
+	union {
+		struct {
+			struct psi_impl *impl;
+			struct psi_call_frame *frame;
+		} fn;
+		struct {
+			struct psi_let_exp *let_exp;
+			struct psi_jit_call *impl_call;
+		} cb;
+	} impl;
 	void *closure;
 	jit_type_t signature;
-	jit_type_t params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
-} PSI_LibjitCall;
+	void *params[1]; /* [type1, type2, ... ] */
+};
+
+static void psi_jit_handler(jit_type_t sig, void *result, void **args, void *data)
+{
+	struct psi_jit_call *call = data;
+
+	psi_context_call(call->context, *(zend_execute_data **)args[0], *(zval **) args[1], call->impl.fn.impl);
+}
+
+static void psi_jit_callback(jit_type_t sig, void *result, void **args,
+		void *data)
+{
+	struct psi_jit_call *call = data, *impl_call = call->impl.cb.impl_call;
+	struct psi_call_frame_callback cbdata;
 
-typedef struct PSI_LibjitData {
-	PSI_LibjitContext *context;
-	impl *impl;
-	zend_internal_arg_info *arginfo;
-} PSI_LibjitData;
+	cbdata.cb = call->impl.cb.let_exp;
+	cbdata.argc = jit_type_num_params(sig);
+	cbdata.argv = args;
+	cbdata.rval = result;
 
-static inline PSI_LibjitCall *PSI_LibjitCallAlloc(PSI_Context *C, decl *decl) {
-	size_t i, c = decl->args ? decl->args->count : 0;
-	PSI_LibjitCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
+	psi_call_frame_do_callback(impl_call->impl.fn.frame, &cbdata);
+}
 
-	for (i = 0; i < c; ++i) {
-		call->params[i] = psi_jit_decl_arg_type(decl->args->args[i]);
+static inline struct psi_jit_call *psi_jit_call_alloc(struct psi_context *C,
+		struct psi_decl *decl)
+{
+	size_t i, c = psi_plist_count(decl->args);
+	struct psi_jit_call *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
+	struct psi_decl_arg *arg;
+
+	decl->info = call;
+	call->context = C;
+	for (i = 0; psi_plist_get(decl->args, i, &arg); ++i) {
+		call->params[i] = psi_jit_decl_arg_type(arg);
 	}
 	call->params[c] = NULL;
 
-	decl->call.info = call;
-	decl->call.args = (void **) &call->params[c+1];
-
 	call->signature = jit_type_create_signature(
 			psi_jit_abi(decl->abi->convention),
 			psi_jit_decl_arg_type(decl->func),
-			call->params, c, 1);
+			(jit_type_t *) call->params,
+			c, 1);
+	assert(call->signature);
+
 	return call;
 }
 
-static inline void PSI_LibjitCallInitClosure(PSI_Context *C, PSI_LibjitCall *call, impl *impl) {
-	PSI_LibjitContext *context = C->context;
-	call->closure = jit_closure_create(context->jit, context->signature,
-			&psi_jit_handler, impl);
+static inline void *psi_jit_call_init_closure(struct psi_context *C,
+		struct psi_jit_call *call, struct psi_impl *impl)
+{
+	struct psi_jit_context *context = C->context;
+
+	call->impl.fn.impl = impl;
+	return call->closure = jit_closure_create(context->jit, context->signature,
+			&psi_jit_handler, call);
+}
+
+static inline void *psi_jit_call_init_callback_closure(struct psi_context *C,
+		struct psi_jit_call *call, struct psi_jit_call *impl_call,
+		struct psi_let_exp *cb)
+{
+	struct psi_jit_context *context = C->context;
+
+	call->impl.cb.let_exp = cb;
+	call->impl.cb.impl_call = impl_call;
+
+	return call->closure = jit_closure_create(context->jit, call->signature,
+			&psi_jit_callback, call);
 }
 
-static inline void PSI_LibjitCallFree(PSI_LibjitCall *call) {
+static inline void psi_jit_call_free(struct psi_jit_call *call)
+{
 	jit_type_free(call->signature);
+	free(call);
 }
 
-static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
-	jit_type_t params[] = {
-		jit_type_void_ptr,
-		jit_type_void_ptr
-	};
+static inline struct psi_jit_context *psi_jit_context_init(
+		struct psi_jit_context *L)
+{
+	jit_type_t params[] = {jit_type_void_ptr, jit_type_void_ptr};
 
 	if (!L) {
 		L = malloc(sizeof(*L));
@@ -124,83 +343,175 @@ static inline PSI_LibjitContext *PSI_LibjitContextInit(PSI_LibjitContext *L) {
 	return L;
 }
 
-static inline void PSI_LibjitContextDtor(PSI_LibjitContext *L) {
+static inline void psi_jit_context_dtor(struct psi_jit_context *L)
+{
 	jit_type_free(L->signature);
 	jit_context_destroy(L->jit);
 }
 
-static inline void PSI_LibjitContextFree(PSI_LibjitContext **L) {
+static inline void psi_jit_context_free(struct psi_jit_context **L)
+{
 	if (*L) {
-		PSI_LibjitContextDtor(*L);
+		psi_jit_context_dtor(*L);
 		free(*L);
 		*L = NULL;
 	}
 }
 
-static void psi_jit_handler(jit_type_t _sig, void *result, void **_args, void *_data)
+static void psi_jit_init(struct psi_context *C)
 {
-	psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
+	C->context = psi_jit_context_init(NULL);
 }
 
-static void psi_jit_init(PSI_Context *C)
+static inline void psi_jit_destroy_callbacks(struct psi_context *C,
+		struct psi_let_exp *let_exp)
 {
-	C->context = PSI_LibjitContextInit(NULL);
+	struct psi_let_callback *cb;
+	struct psi_let_func *fn = NULL;
+
+	switch (let_exp->kind) {
+	case PSI_LET_CALLBACK:
+		cb = let_exp->data.callback;
+
+		if (cb->decl && cb->decl->info) {
+			psi_jit_call_free(cb->decl->info);
+		}
+		fn = cb->func;
+		/* no break */
+	case PSI_LET_FUNC:
+		if (!fn) {
+			fn = let_exp->data.func;
+		}
+
+		if (fn->inner) {
+			size_t i = 0;
+			struct psi_let_exp *inner_let;
+
+			while (psi_plist_get(fn->inner, i++, &inner_let)) {
+				psi_jit_destroy_callbacks(C, inner_let);
+			}
+		}
+		break;
+	default:
+		break;
+	}
 }
 
-static void psi_jit_dtor(PSI_Context *C)
+static void psi_jit_dtor(struct psi_context *C)
 {
 	if (C->decls) {
-		size_t i;
+		size_t i = 0;
+		struct psi_decl *decl;
 
-		for (i = 0; i < C->decls->count; ++i) {
-			decl *decl = C->decls->list[i];
+		while (psi_plist_get(C->decls, i++, &decl)) {
+			if (decl->info) {
+				psi_jit_call_free(decl->info);
+			}
+		}
+	}
+	if (C->impls) {
+		size_t i = 0;
+		struct psi_impl *impl;
+
+		while (psi_plist_get(C->impls, i++, &impl)) {
+			size_t l = 0;
+			struct psi_let_stmt *let;
+
+			while (psi_plist_get(impl->stmts.let, l++, &let)) {
+				psi_jit_destroy_callbacks(C, let->exp);
+			}
+		}
+	}
+	psi_jit_context_free((void *) &C->context);
+}
+
+static inline void psi_jit_compile_callbacks(struct psi_context *C,
+		struct psi_jit_call *impl_call, struct psi_let_exp *let_exp)
+{
+	struct psi_jit_call *call;
+	struct psi_let_callback *cb;
+	struct psi_let_func *fn = NULL;
+
+	switch (let_exp->kind) {
+	case PSI_LET_CALLBACK:
+		cb = let_exp->data.callback;
+		if ((call = psi_jit_call_alloc(C, cb->decl))) {
+			if (!psi_jit_call_init_callback_closure(C, call, impl_call, let_exp)) {
+				psi_jit_call_free(call);
+				break;
+			}
+
+			cb->decl->sym = call->closure;
+		}
+		fn = cb->func;
+		/* no break */
+	case PSI_LET_FUNC:
+		if (!fn) {
+			fn = let_exp->data.func;
+		}
+		if (fn->inner) {
+			size_t i = 0;
+			struct psi_let_exp *inner_let;
 
-			PSI_LibjitCallFree(decl->call.info);
+			while (psi_plist_get(fn->inner, i++, &inner_let)) {
+				psi_jit_compile_callbacks(C, impl_call, inner_let);
+			}
 		}
+		break;
+	default:
+		break;
 	}
-	PSI_LibjitContextFree((void *) &C->context);
 }
 
-static zend_function_entry *psi_jit_compile(PSI_Context *C)
+static zend_function_entry *psi_jit_compile(struct psi_context *C)
 {
-	size_t i, j = 0;
+	size_t i = 0, d = 0, nf = 0;
+	struct psi_impl *impl;
+	struct psi_decl *decl;
 	zend_function_entry *zfe;
-	PSI_LibjitContext *ctx = C->context;
+	struct psi_jit_context *ctx = C->context;
 
 	if (!C->impls) {
 		return NULL;
 	}
 
-	zfe = calloc(C->impls->count + 1, sizeof(*zfe));
+	zfe = calloc(psi_plist_count(C->impls) + 1, sizeof(*zfe));
 	jit_context_build_start(ctx->jit);
 
-	for (i = 0; i < C->impls->count; ++i) {
-		zend_function_entry *zf = &zfe[j];
-		PSI_LibjitCall *call;
-		impl *impl = C->impls->list[i];
+	while (psi_plist_get(C->impls, i++, &impl)) {
+		zend_function_entry *zf = &zfe[nf];
+		struct psi_jit_call *call;
+		size_t l = 0;
+		struct psi_let_stmt *let;
 
 		if (!impl->decl) {
 			continue;
 		}
-
-		call = PSI_LibjitCallAlloc(C, impl->decl);
-		PSI_LibjitCallInitClosure(C, call, impl);
+		if (!(call = psi_jit_call_alloc(C, impl->decl))) {
+			continue;
+		}
+		if (!psi_jit_call_init_closure(C, call, impl)) {
+			psi_jit_call_free(call);
+			continue;
+		}
 
 		zf->fname = impl->func->name + (impl->func->name[0] == '\\');
-		zf->num_args = impl->func->args->count;
 		zf->handler = call->closure;
+		zf->num_args = psi_plist_count(impl->func->args);
 		zf->arg_info = psi_internal_arginfo(impl);
-		++j;
-	}
+		++nf;
 
-	for (i = 0; i < C->decls->count; ++i) {
-		decl *decl = C->decls->list[i];
+		while (psi_plist_get(impl->stmts.let, l++, &let)) {
+			psi_jit_compile_callbacks(C, call, let->exp);
+		}
+	}
 
-		if (decl->impl) {
+	while (psi_plist_get(C->decls, d++, &decl)) {
+		if (decl->info) {
 			continue;
 		}
 
-		PSI_LibjitCallAlloc(C, decl);
+		psi_jit_call_alloc(C, decl);
 	}
 
 	jit_context_build_end(ctx->jit);
@@ -208,21 +519,58 @@ static zend_function_entry *psi_jit_compile(PSI_Context *C)
 	return zfe;
 }
 
-static void psi_jit_call(PSI_Context *C, impl_val *ret_val, decl *decl) {
-	PSI_LibjitCall *call = decl->call.info;
+static void psi_jit_call(struct psi_context *C, struct psi_call_frame *frame,
+		struct psi_decl *decl, void *rval, void **args)
+{
+	struct psi_jit_call *call = decl->info;
+	struct psi_call_frame *prev = call->impl.fn.frame;
 
-	jit_apply(call->signature, decl->call.sym, decl->call.args,
-			decl->args->count, ret_val);
+	call->impl.fn.frame = frame;
+	jit_apply(call->signature, decl->sym, args, psi_plist_count(decl->args), rval);
+	call->impl.fn.frame = prev;
 }
 
-static PSI_ContextOps ops = {
-	psi_jit_init,
-	psi_jit_dtor,
-	psi_jit_compile,
-	psi_jit_call,
-};
+static void psi_jit_call_va(struct psi_context *C, struct psi_call_frame *frame,
+		struct psi_decl *decl, void *rval, void **args, size_t va_count,
+		void **va_types)
+{
+	struct psi_jit_call *info = decl->info;
+	struct psi_call_frame *prev = info->impl.fn.frame;
+	size_t argc = psi_plist_count(decl->args);
+	jit_type_t signature;
+	jit_type_t *param_types = ecalloc(argc + va_count + 1, sizeof(jit_type_t));
+
+	memcpy(param_types, info->params, argc * sizeof(jit_type_t));
+	memcpy(param_types + argc, va_types, va_count * sizeof(jit_type_t));
+
+	signature = jit_type_create_signature(jit_abi_vararg,
+			jit_type_get_return(info->signature), param_types, argc + va_count,
+			1);
+	assert(signature);
+
+	info->impl.fn.frame = frame;
+	jit_apply(signature, decl->sym, args, argc, rval);
+	info->impl.fn.frame = prev;
+	jit_type_free(signature);
+	efree(param_types);
+}
+
+static void *psi_jit_query(struct psi_context *C, enum psi_context_query q,
+		void *arg)
+{
+	switch (q) {
+	case PSI_CONTEXT_QUERY_SELF:
+		return "jit";
+	case PSI_CONTEXT_QUERY_TYPE:
+		return psi_jit_impl_type(*(token_t *) arg);
+	}
+	return NULL;
+}
+
+static struct psi_context_ops ops = {psi_jit_init, psi_jit_dtor,
+		psi_jit_compile, psi_jit_call, psi_jit_call_va, psi_jit_query};
 
-PSI_ContextOps *PSI_Libjit(void)
+struct psi_context_ops *psi_libjit_ops(void)
 {
 	return &ops;
 }