dvander@2193: /**
dvander@2193:  * vim: set ts=4 :
dvander@2193:  * =============================================================================
dvander@2193:  * SourcePawn
dvander@2193:  * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.
dvander@2193:  * =============================================================================
dvander@2193:  *
dvander@2193:  * This program is free software; you can redistribute it and/or modify it under
dvander@2193:  * the terms of the GNU General Public License, version 3.0, as published by the
dvander@2193:  * Free Software Foundation.
dvander@2193:  * 
dvander@2193:  * This program is distributed in the hope that it will be useful, but WITHOUT
dvander@2193:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
dvander@2193:  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
dvander@2193:  * details.
dvander@2193:  *
dvander@2193:  * You should have received a copy of the GNU General Public License along with
dvander@2193:  * this program.  If not, see <http://www.gnu.org/licenses/>.
dvander@2193:  *
dvander@2193:  * As a special exception, AlliedModders LLC gives you permission to link the
dvander@2193:  * code of this program (as well as its derivative works) to "Half-Life 2," the
dvander@2193:  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
dvander@2193:  * by the Valve Corporation.  You must obey the GNU General Public License in
dvander@2193:  * all respects for all other code used.  Additionally, AlliedModders LLC grants
dvander@2193:  * this exception to all derivative works.  AlliedModders LLC defines further
dvander@2193:  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
dvander@2193:  * or <http://www.sourcemod.net/license.php>.
dvander@2193:  *
dvander@2193:  * Version: $Id$
dvander@2193:  */
dvander@2193: 
dvander@2193: #include <string.h>
dvander@2193: #include <stdarg.h>
dvander@2193: #include <assert.h>
dvander@2193: #include <limits.h>
dvander@2193: #include "sp_vm_api.h"
dvander@2193: #include "sp_vm_basecontext.h"
dvander@2193: #include "sp_vm_engine.h"
dvander@2193: #include "x86/jit_x86.h"
dvander@2193: 
dvander@2193: using namespace SourcePawn;
dvander@2193: 
dvander@2193: #define CELLBOUNDMAX	(INT_MAX/sizeof(cell_t))
dvander@2193: #define STACKMARGIN		((cell_t)(16*sizeof(cell_t)))
dvander@2193: 
dvander@2193: BaseContext::BaseContext(BaseRuntime *pRuntime)
dvander@2193: {
dvander@2193: 	m_pRuntime = pRuntime;
dvander@2193: 	m_pPlugin = m_pRuntime->m_pPlugin;
dvander@2193: 
dvander@2193: 	m_InExec = false;
dvander@2193: 	m_CustomMsg = false;
dvander@2193: 
dvander@2226: 	/* Initialize the null references */
dvander@2226: 	uint32_t index;
dvander@2226: 	if (FindPubvarByName("NULL_VECTOR", &index) == SP_ERROR_NONE)
dvander@2226: 	{
dvander@2226: 		sp_pubvar_t *pubvar;
dvander@2226: 		GetPubvarByIndex(index, &pubvar);
dvander@2226: 		m_pNullVec = pubvar->offs;
dvander@2226: 	}
dvander@2226: 	else
dvander@2226: 	{
dvander@2226: 		m_pNullVec = NULL;
dvander@2226: 	}
dvander@2226: 
dvander@2226: 	if (FindPubvarByName("NULL_STRING", &index) == SP_ERROR_NONE)
dvander@2226: 	{
dvander@2226: 		sp_pubvar_t *pubvar;
dvander@2226: 		GetPubvarByIndex(index, &pubvar);
dvander@2226: 		m_pNullString = pubvar->offs;
dvander@2226: 	}
dvander@2226: 	else
dvander@2226: 	{
dvander@2226: 		m_pNullString = NULL;
dvander@2226: 	}
dvander@2226: 
dvander@2226: 	m_ctx.hp = m_pPlugin->data_size;
dvander@2226: 	m_ctx.sp = m_pPlugin->mem_size - sizeof(cell_t);
dvander@2226: 	m_ctx.frm = m_ctx.sp;
dvander@2226: 	m_ctx.n_err = SP_ERROR_NONE;
dvander@2226: 	m_ctx.n_idx = SP_ERROR_NONE;
dvander@2226: 	m_ctx.rp = 0;
dvander@2226: 
dvander@2226: 	g_Jit.SetupContextVars(m_pRuntime, this, &m_ctx);
dvander@2193: }
dvander@2193: 
dvander@2193: BaseContext::~BaseContext()
dvander@2193: {
dvander@2226: 	g_Jit.FreeContextVars(&m_ctx);
dvander@2193: }
dvander@2193: 
dvander@2193: IVirtualMachine *BaseContext::GetVirtualMachine()
dvander@2193: {
dvander@2193: 	return NULL;
dvander@2193: }
dvander@2193: 
dvander@2193: sp_context_t *BaseContext::GetContext()
dvander@2193: {
dvander@2193: 	return reinterpret_cast<sp_context_t *>((IPluginContext * )this);
dvander@2193: }
dvander@2193: 
dvander@2193: sp_context_t *BaseContext::GetCtx()
dvander@2193: {
dvander@2193: 	return &m_ctx;
dvander@2193: }
dvander@2193: 
dvander@2193: bool BaseContext::IsDebugging()
dvander@2193: {
dvander@2226: 	return true;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::SetDebugBreak(void *newpfn, void *oldpfn)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: IPluginDebugInfo *BaseContext::GetDebugInfo()
dvander@2193: {
dvander@2193: 	return NULL;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::Execute(uint32_t code_addr, cell_t *result)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: void BaseContext::SetErrorMessage(const char *msg, va_list ap)
dvander@2193: {
dvander@2193: 	m_CustomMsg = true;
dvander@2193: 
dvander@2193: 	vsnprintf(m_MsgCache, sizeof(m_MsgCache), msg, ap);
dvander@2193: }
dvander@2193: 
dvander@2193: void BaseContext::_SetErrorMessage(const char *msg, ...)
dvander@2193: {
dvander@2193: 	va_list ap;
dvander@2193: 	va_start(ap, msg);
dvander@2193: 	SetErrorMessage(msg, ap);
dvander@2193: 	va_end(ap);
dvander@2193: }
dvander@2193: 
dvander@2193: cell_t BaseContext::ThrowNativeErrorEx(int error, const char *msg, ...)
dvander@2193: {
dvander@2193: 	if (!m_InExec)
dvander@2193: 	{
dvander@2193: 		return 0;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.n_err = error;
dvander@2193: 	
dvander@2193: 	if (msg)
dvander@2193: 	{
dvander@2193: 		va_list ap;
dvander@2193: 		va_start(ap, msg);
dvander@2193: 		SetErrorMessage(msg, ap);
dvander@2193: 		va_end(ap);
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return 0;
dvander@2193: }
dvander@2193: 
dvander@2193: cell_t BaseContext::ThrowNativeError(const char *msg, ...)
dvander@2193: {
dvander@2193: 	if (!m_InExec)
dvander@2193: 	{
dvander@2193: 		return 0;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.n_err = SP_ERROR_NATIVE;
dvander@2193: 
dvander@2193: 	if (msg)
dvander@2193: 	{
dvander@2193: 		va_list ap;
dvander@2193: 		va_start(ap, msg);
dvander@2193: 		SetErrorMessage(msg, ap);
dvander@2193: 		va_end(ap);
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return 0;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::HeapAlloc(unsigned int cells, cell_t *local_addr, cell_t **phys_addr)
dvander@2193: {
dvander@2193: 	cell_t *addr;
dvander@2193: 	ucell_t realmem;
dvander@2193: 
dvander@2193: #if 0
dvander@2193: 	if (cells > CELLBOUNDMAX)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_ARAM;
dvander@2193: 	}
dvander@2193: #else
dvander@2193: 	assert(cells < CELLBOUNDMAX);
dvander@2193: #endif
dvander@2193: 
dvander@2193: 	realmem = cells * sizeof(cell_t);
dvander@2193: 
dvander@2193: 	/**
dvander@2193: 	 * Check if the space between the heap and stack is sufficient.
dvander@2193: 	 */
dvander@2193: 	if ((cell_t)(m_ctx.sp - m_ctx.hp - realmem) < STACKMARGIN)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_HEAPLOW;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	addr = (cell_t *)(m_pPlugin->memory + m_ctx.hp);
dvander@2193: 	/* store size of allocation in cells */
dvander@2193: 	*addr = (cell_t)cells;
dvander@2193: 	addr++;
dvander@2193: 	m_ctx.hp += sizeof(cell_t);
dvander@2193: 
dvander@2193: 	*local_addr = m_ctx.hp;
dvander@2193: 
dvander@2193: 	if (phys_addr)
dvander@2193: 	{
dvander@2193: 		*phys_addr = addr;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.hp += realmem;
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::HeapPop(cell_t local_addr)
dvander@2193: {
dvander@2193: 	cell_t cellcount;
dvander@2193: 	cell_t *addr;
dvander@2193: 
dvander@2193: 	/* check the bounds of this address */
dvander@2193: 	local_addr -= sizeof(cell_t);
dvander@2193: 	if (local_addr < (cell_t)m_pPlugin->data_size || local_addr >= m_ctx.sp)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	addr = (cell_t *)(m_pPlugin->memory + local_addr);
dvander@2193: 	cellcount = (*addr) * sizeof(cell_t);
dvander@2193: 	/* check if this memory count looks valid */
dvander@2193: 	if ((signed)(m_ctx.hp - cellcount - sizeof(cell_t)) != local_addr)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.hp = local_addr;
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: 
dvander@2193: int BaseContext::HeapRelease(cell_t local_addr)
dvander@2193: {
dvander@2193: 	if (local_addr < (cell_t)m_pPlugin->data_size)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.hp = local_addr - sizeof(cell_t);
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::FindNativeByName(const char *name, uint32_t *index)
dvander@2193: {
dvander@2193: 	return m_pRuntime->FindNativeByName(name, index);
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::GetNativeByIndex(uint32_t index, sp_native_t **native)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetNativeByIndex(index, native);
dvander@2193: }
dvander@2193: 
dvander@2193: 
dvander@2193: uint32_t BaseContext::GetNativesNum()
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetNativesNum();
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::FindPublicByName(const char *name, uint32_t *index)
dvander@2193: {
dvander@2193: 	return m_pRuntime->FindPublicByName(name, index);
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::GetPublicByIndex(uint32_t index, sp_public_t **pblic)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetPublicByIndex(index, pblic);
dvander@2193: }
dvander@2193: 
dvander@2193: uint32_t BaseContext::GetPublicsNum()
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetPublicsNum();
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::GetPubvarByIndex(uint32_t index, sp_pubvar_t **pubvar)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetPubvarByIndex(index, pubvar);
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::FindPubvarByName(const char *name, uint32_t *index)
dvander@2193: {
dvander@2193: 	return m_pRuntime->FindPubvarByName(name, index);
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::GetPubvarAddrs(uint32_t index, cell_t *local_addr, cell_t **phys_addr)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetPubvarAddrs(index, local_addr, phys_addr);
dvander@2193: }
dvander@2193: 
dvander@2193: uint32_t BaseContext::GetPubVarsNum()
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetPubVarsNum();
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::BindNatives(const sp_nativeinfo_t *natives, unsigned int num, int overwrite)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::BindNative(const sp_nativeinfo_t *native)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::BindNativeToIndex(uint32_t index, SPVM_NATIVE_FUNC func)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::BindNativeToAny(SPVM_NATIVE_FUNC native)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::LocalToPhysAddr(cell_t local_addr, cell_t **phys_addr)
dvander@2193: {
dvander@2193: 	if (((local_addr >= m_ctx.hp) && (local_addr < m_ctx.sp)) 
dvander@2193: 		|| (local_addr < 0) || ((ucell_t)local_addr >= m_pPlugin->mem_size))
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (phys_addr)
dvander@2193: 	{
dvander@2193: 		*phys_addr = (cell_t *)(m_pPlugin->memory + local_addr);
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::PushCell(cell_t value)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::PushCellsFromArray(cell_t array[], unsigned int numcells)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::PushCellArray(cell_t *local_addr, cell_t **phys_addr, cell_t array[], unsigned int numcells)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::LocalToString(cell_t local_addr, char **addr)
dvander@2193: {
dvander@2193: 	if (((local_addr >= m_ctx.hp) && (local_addr < m_ctx.sp))
dvander@2193: 		|| (local_addr < 0) || ((ucell_t)local_addr >= m_pPlugin->mem_size))
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 	*addr = (char *)(m_pPlugin->memory + local_addr);
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::PushString(cell_t *local_addr, char **phys_addr, const char *string)
dvander@2193: {
dvander@2193: 	return SP_ERROR_ABORTED;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::StringToLocal(cell_t local_addr, size_t bytes, const char *source)
dvander@2193: {
dvander@2193: 	char *dest;
dvander@2193: 	size_t len;
dvander@2193: 
dvander@2193: 	if (((local_addr >= m_ctx.hp) && (local_addr < m_ctx.sp))
dvander@2193: 		|| (local_addr < 0) || ((ucell_t)local_addr >= m_pPlugin->mem_size))
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (bytes == 0)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_NONE;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	len = strlen(source);
dvander@2193: 	dest = (char *)(m_pPlugin->memory + local_addr);
dvander@2193: 
dvander@2193: 	if (len >= bytes)
dvander@2193: 	{
dvander@2193: 		len = bytes - 1;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	memmove(dest, source, len);
dvander@2193: 	dest[len] = '\0';
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: inline int __CheckValidChar(char *c)
dvander@2193: {
dvander@2193: 	int count;
dvander@2193: 	int bytecount = 0;
dvander@2193: 
dvander@2193: 	for (count=1; (*c & 0xC0) == 0x80; count++)
dvander@2193: 	{
dvander@2193: 		c--;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	switch (*c & 0xF0)
dvander@2193: 	{
dvander@2193: 	case 0xC0:
dvander@2193: 	case 0xD0:
dvander@2193: 		{
dvander@2193: 			bytecount = 2;
dvander@2193: 			break;
dvander@2193: 		}
dvander@2193: 	case 0xE0:
dvander@2193: 		{
dvander@2193: 			bytecount = 3;
dvander@2193: 			break;
dvander@2193: 		}
dvander@2193: 	case 0xF0:
dvander@2193: 		{
dvander@2193: 			bytecount = 4;
dvander@2193: 			break;
dvander@2193: 		}
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (bytecount != count)
dvander@2193: 	{
dvander@2193: 		return count;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return 0;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::StringToLocalUTF8(cell_t local_addr, size_t maxbytes, const char *source, size_t *wrtnbytes)
dvander@2193: {
dvander@2193: 	char *dest;
dvander@2193: 	size_t len;
dvander@2193: 	bool needtocheck = false;
dvander@2193: 
dvander@2193: 	if (((local_addr >= m_ctx.hp) && (local_addr < m_ctx.sp))
dvander@2193: 		|| (local_addr < 0)
dvander@2193: 		|| ((ucell_t)local_addr >= m_pPlugin->mem_size))
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 	
dvander@2193: 	if (maxbytes == 0)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_NONE;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	len = strlen(source);
dvander@2193: 	dest = (char *)(m_pPlugin->memory + local_addr);
dvander@2193: 
dvander@2193: 	if ((size_t)len >= maxbytes)
dvander@2193: 	{
dvander@2193: 		len = maxbytes - 1;
dvander@2193: 		needtocheck = true;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	memmove(dest, source, len);
dvander@2193: 	if ((dest[len-1] & 1<<7) && needtocheck)
dvander@2193: 	{
dvander@2193: 		len -= __CheckValidChar(dest+len-1);
dvander@2193: 	}
dvander@2193: 	dest[len] = '\0';
dvander@2193: 
dvander@2193: 	if (wrtnbytes)
dvander@2193: 	{
dvander@2193: 		*wrtnbytes = len;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: IPluginFunction *BaseContext::GetFunctionById(funcid_t func_id)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetFunctionById(func_id);
dvander@2193: }
dvander@2193: 
dvander@2193: IPluginFunction *BaseContext::GetFunctionByName(const char *public_name)
dvander@2193: {
dvander@2193: 	return m_pRuntime->GetFunctionByName(public_name);
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::LocalToStringNULL(cell_t local_addr, char **addr)
dvander@2193: {
dvander@2193: 	int err;
dvander@2193: 	if ((err = LocalToString(local_addr, addr)) != SP_ERROR_NONE)
dvander@2193: 	{
dvander@2193: 		return err;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if ((cell_t *)*addr == m_pNullString)
dvander@2193: 	{
dvander@2193: 		*addr = NULL;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: SourceMod::IdentityToken_t *BaseContext::GetIdentity()
dvander@2193: {
dvander@2193: 	SourceMod::IdentityToken_t *tok;
dvander@2193: 
dvander@2193: 	if (GetKey(1, (void **)&tok))
dvander@2193: 	{
dvander@2193: 		return tok;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return NULL;
dvander@2193: }
dvander@2193: 
dvander@2193: cell_t *BaseContext::GetNullRef(SP_NULL_TYPE type)
dvander@2193: {
dvander@2193: 	if (type == SP_NULL_VECTOR)
dvander@2193: 	{
dvander@2193: 		return m_pNullVec;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	return NULL;
dvander@2193: }
dvander@2193: 
dvander@2193: bool BaseContext::IsInExec()
dvander@2193: {
dvander@2193: 	return m_InExec;
dvander@2193: }
dvander@2193: 
dvander@2193: int BaseContext::Execute2(IPluginFunction *function, const cell_t *params, unsigned int num_params, cell_t *result)
dvander@2193: {
dvander@2193: 	int ir;
dvander@2193: 	int serial;
dvander@2193: 	cell_t *sp;
dvander@2193: 	funcid_t fnid;
dvander@2226: 	JitFunction *fn;
dvander@2193: 	sp_public_t *pubfunc;
dvander@2193: 	cell_t _ignore_result;
dvander@2226: 	unsigned int public_id;
dvander@2193: 
dvander@2193: 	fnid = function->GetFunctionID();
dvander@2193: 
dvander@2193: 	if (fnid & 1)
dvander@2226: 	{	
dvander@2193: 		public_id = fnid >> 1;
dvander@2193: 
dvander@2193: 		if (m_pRuntime->GetPublicByIndex(public_id, &pubfunc) != SP_ERROR_NONE)
dvander@2193: 		{
dvander@2193: 			return SP_ERROR_NOT_FOUND;
dvander@2193: 		}
dvander@2193: 	}
dvander@2193: 	else
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_INVALID_ADDRESS;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (m_pRuntime->IsPaused())
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_NOT_RUNNABLE;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if ((cell_t)(m_ctx.hp + 16*sizeof(cell_t)) > (cell_t)(m_ctx.sp - (sizeof(cell_t) * (num_params + 1))))
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_STACKLOW;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (result == NULL)
dvander@2193: 	{
dvander@2193: 		result = &_ignore_result;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	/* We got this far.  It's time to start profiling. */
dvander@2193: 	
dvander@2193: 	if ((m_pPlugin->prof_flags & SP_PROF_CALLBACKS) == SP_PROF_CALLBACKS)
dvander@2193: 	{
dvander@2193: 		serial = m_pPlugin->profiler->OnCallbackBegin(this, pubfunc);
dvander@2193: 	}
dvander@2193: 
dvander@2226: 	/* See if we have to compile the callee. */
dvander@2226: 	if ((fn = m_pRuntime->m_PubJitFuncs[public_id]) == NULL)
dvander@2226: 	{
dvander@2226: 		uint32_t func_idx;
dvander@2226: 
dvander@2226: 		/* We might not have to - check pcode offset. */
dvander@2226: 		if ((func_idx = FuncLookup((CompData *)m_pRuntime->m_pCo, pubfunc->code_offs)) != 0)
dvander@2226: 		{
dvander@2226: 			fn = m_pRuntime->GetJittedFunction(func_idx);
dvander@2226: 			assert(fn != NULL);
dvander@2226: 			m_pRuntime->m_PubJitFuncs[public_id] = fn;
dvander@2226: 		}
dvander@2226: 		else
dvander@2226: 		{
dvander@2226: 			if ((fn = g_Jit.CompileFunction(m_pRuntime, pubfunc->code_offs, &ir)) == NULL)
dvander@2226: 			{
dvander@2226: 				return ir;
dvander@2226: 			}
dvander@2226: 			m_pRuntime->m_PubJitFuncs[public_id] = fn;
dvander@2226: 		}
dvander@2226: 	}
dvander@2226: 
dvander@2193: 	/* Save our previous state. */
dvander@2193: 
dvander@2193: 	bool save_exec;
dvander@2193: 	uint32_t save_n_idx;
dvander@2226: 	cell_t save_sp, save_hp, save_rp, save_cip;
dvander@2193: 
dvander@2193: 	save_sp = m_ctx.sp;
dvander@2193: 	save_hp = m_ctx.hp;
dvander@2193: 	save_exec = m_InExec;
dvander@2193: 	save_n_idx = m_ctx.n_idx;
dvander@2226: 	save_rp = m_ctx.rp;
dvander@2226: 	save_cip = m_ctx.err_cip;
dvander@2193: 
dvander@2193: 	/* Push parameters */
dvander@2193: 
dvander@2193: 	m_ctx.sp -= sizeof(cell_t) * (num_params + 1);
dvander@2193: 	sp = (cell_t *)(m_pPlugin->memory + m_ctx.sp);
dvander@2193: 
dvander@2193: 	sp[0] = num_params;
dvander@2193: 	for (unsigned int i = 0; i < num_params; i++)
dvander@2193: 	{
dvander@2193: 		sp[i + 1] = params[i];
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	/* Clear internal state */
dvander@2193: 	m_ctx.n_err = SP_ERROR_NONE;
dvander@2193: 	m_ctx.n_idx = 0;
dvander@2193: 	m_MsgCache[0] = '\0';
dvander@2193: 	m_CustomMsg = false;
dvander@2214: 	m_InExec = true;
dvander@2193: 
dvander@2226: 	/* Start the frame tracer */
dvander@2193: 
dvander@2226: 	ir = g_Jit.InvokeFunction(m_pRuntime, fn, result);
dvander@2193: 
dvander@2226: 	/* Restore some states, stop the frame tracer */
dvander@2193: 
dvander@2193: 	m_InExec = save_exec;
dvander@2193: 
dvander@2193: 	if (ir == SP_ERROR_NONE)
dvander@2193: 	{
dvander@2193: 		m_ctx.n_err = SP_ERROR_NONE;
dvander@2193: 		if (m_ctx.sp != save_sp)
dvander@2193: 		{
dvander@2193: 			ir = SP_ERROR_STACKLEAK;
dvander@2193: 			_SetErrorMessage("Stack leak detected: sp:%d should be %d!", 
dvander@2193: 				m_ctx.sp, 
dvander@2193: 				save_sp);
dvander@2193: 		}
dvander@2193: 		if (m_ctx.hp != save_hp)
dvander@2193: 		{
dvander@2193: 			ir = SP_ERROR_HEAPLEAK;
dvander@2193: 			_SetErrorMessage("Heap leak detected: hp:%d should be %d!", 
dvander@2193: 				m_ctx.hp, 
dvander@2193: 				save_hp);
dvander@2193: 		}
dvander@2226: 		if (m_ctx.rp != save_rp)
dvander@2226: 		{
dvander@2226: 			ir = SP_ERROR_STACKLEAK;
dvander@2226: 			_SetErrorMessage("Return stack leak detected: rp:%d should be %d!",
dvander@2226: 				m_ctx.rp,
dvander@2226: 				save_rp);
dvander@2226: 		}
dvander@2226: 	}
dvander@2226: 
dvander@2226: 	if (ir != SP_ERROR_NONE)
dvander@2226: 	{
dvander@2226: 		g_engine1.ReportError(m_pRuntime, ir, m_MsgCache, save_rp);
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_ctx.sp = save_sp;
dvander@2193: 	m_ctx.hp = save_hp;
dvander@2226: 	m_ctx.rp = save_rp;
dvander@2226: 	
dvander@2193: 	if ((m_pPlugin->prof_flags & SP_PROF_CALLBACKS) == SP_PROF_CALLBACKS)
dvander@2193: 	{
dvander@2193: 		m_pPlugin->profiler->OnCallbackEnd(serial);
dvander@2193: 	}
dvander@2193: 
dvander@2226: 	m_ctx.err_cip = save_cip;
dvander@2193: 	m_ctx.n_idx = save_n_idx;
dvander@2193: 	m_ctx.n_err = SP_ERROR_NONE;
dvander@2193: 	m_MsgCache[0] = '\0';
dvander@2193: 	m_CustomMsg = false;
dvander@2193: 
dvander@2193: 	return ir;
dvander@2193: }
dvander@2193: 
dvander@2193: IPluginRuntime *BaseContext::GetRuntime()
dvander@2193: {
dvander@2193: 	return m_pRuntime;
dvander@2193: }
dvander@2193: 
dvander@2193: DebugInfo::DebugInfo(sp_plugin_t *plugin) : m_pPlugin(plugin)
dvander@2193: {
dvander@2193: }
dvander@2193: 
dvander@2193: #define USHR(x) ((unsigned int)(x)>>1)
dvander@2193: 
dvander@2193: int DebugInfo::LookupFile(ucell_t addr, const char **filename)
dvander@2193: {
dvander@2193: 	int high, low, mid;
dvander@2193: 
dvander@2193: 	high = m_pPlugin->debug.files_num;
dvander@2193: 	low = -1;
dvander@2193: 
dvander@2193: 	while (high - low > 1)
dvander@2193: 	{
dvander@2193: 		mid = USHR(low + high);
dvander@2226: 		if (m_pPlugin->debug.files[mid].addr <= addr)
dvander@2193: 		{
dvander@2193: 			low = mid;
dvander@2193: 		} else {
dvander@2193: 			high = mid;
dvander@2193: 		}
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (low == -1)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_NOT_FOUND;
dvander@2193: 	}
dvander@2193: 
dvander@2226: 	*filename = m_pPlugin->debug.stringbase + m_pPlugin->debug.files[low].name;
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: int DebugInfo::LookupFunction(ucell_t addr, const char **name)
dvander@2193: {
dvander@2226: 	uint32_t max, iter;
dvander@2226: 	sp_fdbg_symbol_t *sym;
dvander@2226: 	sp_fdbg_arraydim_t *arr;
dvander@2226: 	uint8_t *cursor = (uint8_t *)(m_pPlugin->debug.symbols);
dvander@2193: 
dvander@2226: 	max = m_pPlugin->debug.syms_num;
dvander@2226: 	for (iter = 0; iter < max; iter++)
dvander@2193: 	{
dvander@2226: 		sym = (sp_fdbg_symbol_t *)cursor;
dvander@2226: 
dvander@2226: 		if (sym->ident == SP_SYM_FUNCTION
dvander@2226: 			&& sym->codestart <= addr 
dvander@2226: 			&& sym->codeend > addr)
dvander@2193: 		{
dvander@2226: 			*name = m_pPlugin->debug.stringbase + sym->name;
dvander@2226: 			return SP_ERROR_NONE;
dvander@2193: 		}
dvander@2226: 
dvander@2226: 		if (sym->dimcount > 0)
dvander@2226: 		{
dvander@2226: 			cursor += sizeof(sp_fdbg_symbol_t);
dvander@2226: 			arr = (sp_fdbg_arraydim_t *)cursor;
dvander@2226: 			cursor += sizeof(sp_fdbg_arraydim_t) * sym->dimcount;
dvander@2226: 			continue;
dvander@2226: 		}
dvander@2226: 
dvander@2226: 		cursor += sizeof(sp_fdbg_symbol_t);
dvander@2193: 	}
dvander@2193: 
dvander@2226: 	return SP_ERROR_NOT_FOUND;
dvander@2193: 
dvander@2193: }
dvander@2193: 
dvander@2193: int DebugInfo::LookupLine(ucell_t addr, uint32_t *line)
dvander@2193: {
dvander@2193: 	int high, low, mid;
dvander@2193: 
dvander@2193: 	high = m_pPlugin->debug.lines_num;
dvander@2193: 	low = -1;
dvander@2193: 
dvander@2193: 	while (high - low > 1)
dvander@2193: 	{
dvander@2193: 		mid = USHR(low + high);
dvander@2226: 		if (m_pPlugin->debug.lines[mid].addr <= addr)
dvander@2193: 		{
dvander@2193: 			low = mid;
dvander@2193: 		} else {
dvander@2193: 			high = mid;
dvander@2193: 		}
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	if (low == -1)
dvander@2193: 	{
dvander@2193: 		return SP_ERROR_NOT_FOUND;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	/* Since the CIP occurs BEFORE the line, we have to add one */
dvander@2226: 	*line = m_pPlugin->debug.lines[low].line + 1;
dvander@2193: 
dvander@2193: 	return SP_ERROR_NONE;
dvander@2193: }
dvander@2193: 
dvander@2193: #undef USHR
dvander@2193: 
dvander@2193: int BaseContext::GetLastNativeError()
dvander@2193: {
dvander@2193: 	return m_ctx.n_err;
dvander@2193: }
dvander@2193: 
dvander@2193: cell_t *BaseContext::GetLocalParams()
dvander@2193: {
dvander@2193: 	return (cell_t *)(m_pPlugin->memory + m_ctx.frm + (2 * sizeof(cell_t)));
dvander@2193: }
dvander@2193: 
dvander@2193: void BaseContext::SetKey(int k, void *value)
dvander@2193: {
dvander@2193: 	if (k < 1 || k > 4)
dvander@2193: 	{
dvander@2193: 		return;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	m_keys[k - 1] = value;
dvander@2193: 	m_keys_set[k - 1] = true;
dvander@2193: }
dvander@2193: 
dvander@2193: bool BaseContext::GetKey(int k, void **value)
dvander@2193: {
dvander@2193: 	if (k < 1 || k > 4 || m_keys_set[k - 1] == false)
dvander@2193: 	{
dvander@2193: 		return false;
dvander@2193: 	}
dvander@2193: 
dvander@2193: 	*value = m_keys[k - 1];
dvander@2193: 
dvander@2193: 	return true;
dvander@2193: }