13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_VM_C1_FPUSTACKSIM_X86_HPP
26 #define CPU_X86_VM_C1_FPUSTACKSIM_X86_HPP
27
28 // Simulates the FPU stack and maintains mapping [fpu-register -> stack offset]
29 // FPU registers are described as numbers from 0..nof_fpu_regs-1
30
31 class Compilation;
32
33 class FpuStackSim VALUE_OBJ_CLASS_SPEC {
34 private:
35 Compilation* _compilation;
36 int _stack_size;
37 int _regs[FrameMap::nof_fpu_regs];
38
39 int tos_index() const { return _stack_size - 1; }
40
41 int regs_at(int i) const;
42 void set_regs_at(int i, int val);
43 void dec_stack_size();
44 void inc_stack_size();
45
46 // unified bailout support
47 Compilation* compilation() const { return _compilation; }
48 void bailout(const char* msg) const { compilation()->bailout(msg); }
49 bool bailed_out() const { return compilation()->bailed_out(); }
50
51 public:
52 FpuStackSim(Compilation* compilation);
53 void pop ();
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13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_VM_C1_FPUSTACKSIM_X86_HPP
26 #define CPU_X86_VM_C1_FPUSTACKSIM_X86_HPP
27
28 // Simulates the FPU stack and maintains mapping [fpu-register -> stack offset]
29 // FPU registers are described as numbers from 0..nof_fpu_regs-1
30
31 class Compilation;
32
33 class FpuStackSim {
34 private:
35 Compilation* _compilation;
36 int _stack_size;
37 int _regs[FrameMap::nof_fpu_regs];
38
39 int tos_index() const { return _stack_size - 1; }
40
41 int regs_at(int i) const;
42 void set_regs_at(int i, int val);
43 void dec_stack_size();
44 void inc_stack_size();
45
46 // unified bailout support
47 Compilation* compilation() const { return _compilation; }
48 void bailout(const char* msg) const { compilation()->bailout(msg); }
49 bool bailed_out() const { return compilation()->bailed_out(); }
50
51 public:
52 FpuStackSim(Compilation* compilation);
53 void pop ();
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