164 bool FrameMap::is_caller_save_register (LIR_Opr reg) { 165 if (reg->is_single_fpu() || reg->is_double_fpu()) { return true; } 166 if (reg->is_double_cpu()) { 167 return is_caller_save_register(reg->as_register_lo()) || 168 is_caller_save_register(reg->as_register_hi()); 169 } 170 return is_caller_save_register(reg->as_register()); 171 } 172 173 174 NEEDS_CLEANUP // once the new calling convention is enabled, we no 175 // longer need to treat I5, I4 and L0 specially 176 // Because the interpreter destroys caller's I5, I4 and L0, 177 // we must spill them before doing a Java call as we may land in 178 // interpreter. 179 bool FrameMap::is_caller_save_register (Register r) { 180 return (r->is_global() && (r != G0)) || r->is_out(); 181 } 182 183 184 void FrameMap::init () { 185 if (_init_done) return; 186 187 int i=0; 188 // Register usage: 189 // O6: sp 190 // I6: fp 191 // I7: return address 192 // G0: zero 193 // G2: thread 194 // G7: not available 195 // G6: not available 196 /* 0 */ map_register(i++, L0); 197 /* 1 */ map_register(i++, L1); 198 /* 2 */ map_register(i++, L2); 199 /* 3 */ map_register(i++, L3); 200 /* 4 */ map_register(i++, L4); 201 /* 5 */ map_register(i++, L5); 202 /* 6 */ map_register(i++, L6); 203 /* 7 */ map_register(i++, L7); 204 205 /* 8 */ map_register(i++, I0); | 164 bool FrameMap::is_caller_save_register (LIR_Opr reg) { 165 if (reg->is_single_fpu() || reg->is_double_fpu()) { return true; } 166 if (reg->is_double_cpu()) { 167 return is_caller_save_register(reg->as_register_lo()) || 168 is_caller_save_register(reg->as_register_hi()); 169 } 170 return is_caller_save_register(reg->as_register()); 171 } 172 173 174 NEEDS_CLEANUP // once the new calling convention is enabled, we no 175 // longer need to treat I5, I4 and L0 specially 176 // Because the interpreter destroys caller's I5, I4 and L0, 177 // we must spill them before doing a Java call as we may land in 178 // interpreter. 179 bool FrameMap::is_caller_save_register (Register r) { 180 return (r->is_global() && (r != G0)) || r->is_out(); 181 } 182 183 184 void FrameMap::initialize() { 185 assert(!_init_done, "once"); 186 187 int i=0; 188 // Register usage: 189 // O6: sp 190 // I6: fp 191 // I7: return address 192 // G0: zero 193 // G2: thread 194 // G7: not available 195 // G6: not available 196 /* 0 */ map_register(i++, L0); 197 /* 1 */ map_register(i++, L1); 198 /* 2 */ map_register(i++, L2); 199 /* 3 */ map_register(i++, L3); 200 /* 4 */ map_register(i++, L4); 201 /* 5 */ map_register(i++, L5); 202 /* 6 */ map_register(i++, L6); 203 /* 7 */ map_register(i++, L7); 204 205 /* 8 */ map_register(i++, I0); |