144 lines
3.6 KiB
C++
144 lines
3.6 KiB
C++
// vim: set ts=8 sts=2 sw=2 tw=99 et:
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//
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// This file is part of SourcePawn.
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//
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// SourcePawn is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// SourcePawn is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with SourcePawn. If not, see <http://www.gnu.org/licenses/>.
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#ifndef _INCLUDE_SOURCEPAWN_JIT_X86_H_
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#define _INCLUDE_SOURCEPAWN_JIT_X86_H_
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#include <sp_vm_types.h>
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#include <sp_vm_api.h>
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#include <macro-assembler-x86.h>
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#include <am-vector.h>
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#include "jit_shared.h"
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#include "plugin-runtime.h"
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#include "plugin-context.h"
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#include "compiled-function.h"
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#include "opcodes.h"
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using namespace SourcePawn;
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namespace sp {
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class Environment;
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}
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#define JIT_INLINE_ERRORCHECKS (1<<0)
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#define JIT_INLINE_NATIVES (1<<1)
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#define STACK_MARGIN 64 //8 parameters of safety, I guess
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#define JIT_FUNCMAGIC 0x214D4148 //magic function offset
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#define JITVARS_PROFILER 2 //profiler
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#define sDIMEN_MAX 5 //this must mirror what the compiler has.
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typedef struct funcinfo_s
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{
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unsigned int magic;
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unsigned int index;
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} funcinfo_t;
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typedef struct functracker_s
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{
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unsigned int num_functions;
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unsigned int code_size;
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} functracker_t;
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struct CallThunk
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{
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Label call;
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cell_t pcode_offset;
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CallThunk(cell_t pcode_offset)
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: pcode_offset(pcode_offset)
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{
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}
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};
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class Compiler
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{
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public:
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Compiler(PluginRuntime *rt, cell_t pcode_offs);
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~Compiler();
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CompiledFunction *emit(int *errp);
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private:
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bool setup(cell_t pcode_offs);
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bool emitOp(OPCODE op);
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cell_t readCell();
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private:
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Label *labelAt(size_t offset);
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bool emitCall();
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bool emitNativeCall(OPCODE op);
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bool emitSwitch();
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void emitGenArray(bool autozero);
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void emitCallThunks();
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void emitCheckAddress(Register reg);
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void emitErrorPath(Label *dest, int code);
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void emitErrorPaths();
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void emitFloatCmp(ConditionCode cc);
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ExternalAddress cipAddr() {
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return ExternalAddress(context_->addressOfCip());
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}
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ExternalAddress hpAddr() {
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sp_context_t *ctx = rt_->GetBaseContext()->GetCtx();
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return ExternalAddress(&ctx->hp);
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}
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ExternalAddress frmAddr() {
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return ExternalAddress(context_->addressOfFrm());
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}
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private:
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AssemblerX86 masm;
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sp::Environment *env_;
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PluginRuntime *rt_;
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PluginContext *context_;
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const sp_plugin_t *plugin_;
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int error_;
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uint32_t pcode_start_;
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cell_t *code_start_;
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cell_t *cip_;
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cell_t *code_end_;
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Label *jump_map_;
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ke::Vector<size_t> backward_jumps_;
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// Errors
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Label error_bounds_;
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Label error_heap_low_;
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Label error_heap_min_;
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Label error_stack_low_;
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Label error_stack_min_;
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Label error_divide_by_zero_;
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Label error_memaccess_;
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Label error_integer_overflow_;
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Label extern_error_;
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ke::Vector<CallThunk *> thunks_; //:TODO: free
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};
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const Register pri = eax;
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const Register alt = edx;
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const Register stk = edi;
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const Register dat = esi;
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const Register tmp = ecx;
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const Register frm = ebx;
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CompiledFunction *
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CompileFunction(PluginRuntime *prt, cell_t pcode_offs, int *err);
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#endif //_INCLUDE_SOURCEPAWN_JIT_X86_H_
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