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Fixed Cause register for bad COP instructions. Verified with

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mtetrisc and starsldr that they both throw and handle these
exceptions.
This commit is contained in:
Aaron Giles 2008-05-30 05:59:06 +00:00
parent c1a1cab523
commit 91f55454e4
1 changed files with 9 additions and 2 deletions
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11
src/emu/cpu/mips/mips3drc.c
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@ -1454,6 +1454,13 @@ static void static_generate_exception(drcuml_state *drcuml, UINT8 exception, int
UML_MOVc(block, IF_Z, CPR032(COP0_EPC), IREG(0)); // mov [EPC],i0,Z
UML_OR(block, CPR032(COP0_Cause), IREG(2), IMM(exception << 2)); // or [Cause],i2,exception << 2
/* for BADCOP exceptions, we use the exception parameter to know which COP */
if (exception == EXCEPTION_BADCOP)
{
UML_GETEXP(block, IREG(0)); // getexp i0
UML_INSERT(block, CPR032(COP0_Cause), IREG(0), IMM(28), IMM(0x30000000)); // insert [Cause],i0,28,0x30000000
}
/* set EXL in the SR */
UML_OR(block, IREG(0), CPR032(COP0_Status), IMM(SR_EXL)); // or i0,[Status],SR_EXL
UML_MOV(block, CPR032(COP0_Status), IREG(0)); // mov [Status],i0
@ -3240,7 +3247,7 @@ static int generate_cop1(drcuml_block *block, compiler_state *compiler, const op
if (mips3->impstate->drcoptions & MIPS3DRC_STRICT_COP1)
{
UML_TEST(block, CPR032(COP0_Status), IMM(SR_COP1)); // test [Status],SR_COP1
UML_EXHc(block, IF_Z, mips3->impstate->exception[EXCEPTION_BADCOP], IMM(0));// exh cop,0,Z
UML_EXHc(block, IF_Z, mips3->impstate->exception[EXCEPTION_BADCOP], IMM(1));// exh cop,1,Z
}
switch (RSREG)
@ -3595,7 +3602,7 @@ static int generate_cop1x(drcuml_block *block, compiler_state *compiler, const o
if (mips3->impstate->drcoptions & MIPS3DRC_STRICT_COP1)
{
UML_TEST(block, CPR032(COP0_Status), IMM(SR_COP1)); // test [Status],SR_COP1
UML_EXHc(block, IF_Z, mips3->impstate->exception[EXCEPTION_BADCOP], IMM(0));// exh cop,0,Z
UML_EXHc(block, IF_Z, mips3->impstate->exception[EXCEPTION_BADCOP], IMM(1));// exh cop,1,Z
}
switch (op & 0x3f)