124 lines
2.5 KiB
C++
124 lines
2.5 KiB
C++
#include <string.h>
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#include "optimizer.h"
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int g_opt_level = 0;
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#define OP_SYSREQ_C 123
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#define OP_NOP 134
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#define OP_FLOAT_MUL 138
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#define OP_FLOAT_DIV 139
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#define OP_FLOAT_ADD 140
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#define OP_FLOAT_SUB 141
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#define OP_FLOAT_TO 142
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#define OP_FLOAT_ROUND 143
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#define OP_FLOAT_CMP 144
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cell op_trans_table[N_Total_FloatOps] =
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{
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OP_FLOAT_MUL,
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OP_FLOAT_DIV,
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OP_FLOAT_ADD,
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OP_FLOAT_SUB,
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OP_FLOAT_TO,
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OP_FLOAT_ROUND,
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OP_FLOAT_CMP
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};
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void OnBrowseRelocate(AMX *amx, cell *oplist, cell *cip)
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{
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char *codeptr = (char *)amx->base + (long)(((AMX_HEADER *)amx->base)->cod);
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//jump to the parameter;
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codeptr += *cip;
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int native = -1;
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cell n_offs = *(cell *)codeptr;
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optimizer_s *opt = (optimizer_s *)amx->usertags[UT_OPTIMIZER];
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for (int i=0; i<N_Total_FloatOps; i++)
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{
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if (opt->natives[i] == n_offs)
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{
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native = i;
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break;
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}
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}
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if (native != -1)
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{
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//we're patching this:
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// 0x7B 0x?? SYSREQ.C float???
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//with:
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// 0x8A FLOAT.MUL
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// 0x86 NOP
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cell new_opcodes[2];
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new_opcodes[0] = op_trans_table[native];
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new_opcodes[1] = OP_NOP;
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codeptr -= sizeof(cell);
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#if defined __GNUC__ || defined ASM32 || defined JIT
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*(cell *)codeptr = oplist[new_opcodes[0]];
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*(cell *)(codeptr + sizeof(cell)) = oplist[new_opcodes[1]];
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#else
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*(cell *)codeptr = new_opcodes[0];
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*(cell *)(codeptr + sizeof(cell)) = new_opcodes[1];
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#endif
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}
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*cip += sizeof(cell);
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return;
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}
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#define FIND_NATIVE(name, bind) \
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if (amx_FindNative(amx, name, &index) != AMX_ERR_NOTFOUND) \
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opt->natives[bind] = index;
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void _Setup_Optimizer_Stage2(AMX *amx, cell *oplist, cell *cip)
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{
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int index;
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amx->usertags[UT_BROWSEHOOK] = (void *)OnBrowseRelocate;
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optimizer_s *opt = new optimizer_s;
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for (int i=0; i<N_Total_FloatOps; i++)
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opt->natives[i] = -1;
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amx->usertags[UT_OPTIMIZER] = (void *)opt;
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if (g_opt_level & 1)
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{
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FIND_NATIVE("floatmul", N_Float_Mul);
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FIND_NATIVE("floatdiv", N_Float_Div);
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FIND_NATIVE("floatadd", N_Float_Add);
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FIND_NATIVE("floatsub", N_Float_Sub);
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}
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if (g_opt_level & 4)
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{
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FIND_NATIVE("float", N_Float_To);
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FIND_NATIVE("floatround", N_Float_Round);
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}
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if (g_opt_level & 2)
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{
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#if !defined AMD64
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if (amxx_CpuSupport())
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{
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#endif
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FIND_NATIVE("floatcmp", N_Float_Cmp);
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#if !defined AMD64
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} else {
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g_opt_level &= ~(2);
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}
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#endif
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}
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/* we don't do these yet because of radix stuff >:\ */
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//FIND_NATIVE("floatsin", N_Float_Sin);
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//FIND_NATIVE("floatcos", N_Float_Cos);
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//FIND_NATIVE("floattan", N_Float_Tan);
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}
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void SetupOptimizer(AMX *amx)
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{
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amx->usertags[UT_BROWSEHOOK] = (void *)_Setup_Optimizer_Stage2;
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}
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