Index: runtime/vm/stub_code_mips.cc |
=================================================================== |
--- runtime/vm/stub_code_mips.cc (revision 24627) |
+++ runtime/vm/stub_code_mips.cc (working copy) |
@@ -1578,6 +1578,22 @@ |
} |
#endif // DEBUG |
+ |
+ // Check single stepping. |
+ Label not_stepping; |
+ __ lw(T0, FieldAddress(CTX, Context::isolate_offset())); |
+ __ lbu(T0, Address(T0, Isolate::single_step_offset())); |
+ __ BranchEqual(T0, 0, ¬_stepping); |
+ // Call single step callback in debugger. |
+ __ addiu(SP, SP, Immediate(-2 * kWordSize)); |
+ __ sw(S5, Address(SP, 1 * kWordSize)); // Preserve IC data. |
+ __ sw(RA, Address(SP, 0 * kWordSize)); // Return address. |
+ __ CallRuntime(kSingleStepHandlerRuntimeEntry); |
+ __ lw(RA, Address(SP, 0 * kWordSize)); |
+ __ lw(S5, Address(SP, 1 * kWordSize)); |
+ __ addiu(SP, SP, Immediate(2 * kWordSize)); |
+ __ Bind(¬_stepping); |
+ |
// Load argument descriptor into S4. |
__ lw(S4, FieldAddress(S5, ICData::arguments_descriptor_offset())); |
// Preserve return address, since RA is needed for subroutine call. |
@@ -1819,6 +1835,22 @@ |
} |
#endif // DEBUG |
+ // Check single stepping. |
+ Label not_stepping; |
+ __ lw(T0, FieldAddress(CTX, Context::isolate_offset())); |
+ __ lbu(T0, Address(T0, Isolate::single_step_offset())); |
+ __ BranchEqual(T0, 0, ¬_stepping); |
+ // Call single step callback in debugger. |
+ __ addiu(SP, SP, Immediate(-2 * kWordSize)); |
+ __ sw(S5, Address(SP, 1 * kWordSize)); // Preserve IC data. |
+ __ sw(RA, Address(SP, 0 * kWordSize)); // Return address. |
+ __ CallRuntime(kSingleStepHandlerRuntimeEntry); |
+ __ lw(RA, Address(SP, 0 * kWordSize)); |
+ __ lw(S5, Address(SP, 1 * kWordSize)); |
+ __ addiu(SP, SP, Immediate(2 * kWordSize)); |
+ __ Bind(¬_stepping); |
+ |
+ |
// S5: IC data object (preserved). |
__ lw(T0, FieldAddress(S5, ICData::ic_data_offset())); |
// T0: ic_data_array with entries: target functions and count. |
@@ -2312,6 +2344,19 @@ |
// Returns: CMPRES is zero if equal, non-zero otherwise. |
void StubCode::GenerateUnoptimizedIdenticalWithNumberCheckStub( |
Assembler* assembler) { |
+ // Check single stepping. |
+ Label not_stepping; |
+ __ lw(T0, FieldAddress(CTX, Context::isolate_offset())); |
+ __ lbu(T0, Address(T0, Isolate::single_step_offset())); |
+ __ BranchEqual(T0, 0, ¬_stepping); |
+ // Call single step callback in debugger. |
+ __ addiu(SP, SP, Immediate(-1 * kWordSize)); |
+ __ sw(RA, Address(SP, 0 * kWordSize)); // Return address. |
+ __ CallRuntime(kSingleStepHandlerRuntimeEntry); |
+ __ lw(RA, Address(SP, 0 * kWordSize)); |
+ __ addiu(SP, SP, Immediate(1 * kWordSize)); |
+ __ Bind(¬_stepping); |
+ |
const Register temp1 = T2; |
const Register temp2 = T3; |
const Register left = T1; |