diff options
| author | Leon Alrae <leon.alrae@imgtec.com> | 2014-07-07 11:24:01 +0100 |
|---|---|---|
| committer | Leon Alrae <leon.alrae@imgtec.com> | 2014-11-03 11:48:34 +0000 |
| commit | aea14095ea91f792ee43ee52fe6032cd8cdd7190 (patch) | |
| tree | eb601014844055666fb676f0efe8b689ac2fce64 /target-mips/cpu.h | |
| parent | 9456c2fbcd82dd82328ac6e7602a815582b1043e (diff) | |
target-mips: add BadInstr and BadInstrP support
BadInstr Register (CP0 Register 8, Select 1)
The BadInstr register is a read-only register that capture the most recent
instruction which caused an exception.
BadInstrP Register (CP0 Register 8, Select 2)
The BadInstrP register contains the prior branch instruction, when the
faulting instruction is in a branch delay slot.
Using error_code to indicate whether AdEL or TLBL was triggered during
instruction fetch, in this case BadInstr is not updated as valid instruction
word is not available.
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Diffstat (limited to 'target-mips/cpu.h')
| -rw-r--r-- | target-mips/cpu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target-mips/cpu.h b/target-mips/cpu.h index 9c38b4ff74..4687f4f2cf 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -283,6 +283,8 @@ struct CPUMIPSState { #define CP0SRSC4_SRS13 0 int32_t CP0_HWREna; target_ulong CP0_BadVAddr; + uint32_t CP0_BadInstr; + uint32_t CP0_BadInstrP; int32_t CP0_Count; target_ulong CP0_EntryHi; #define CP0EnHi_EHINV 10 @@ -383,6 +385,8 @@ struct CPUMIPSState { #define CP0C2_SA 0 int32_t CP0_Config3; #define CP0C3_M 31 +#define CP0C3_BP 27 +#define CP0C3_BI 26 #define CP0C3_ISA_ON_EXC 16 #define CP0C3_ULRI 13 #define CP0C3_RXI 12 @@ -453,6 +457,8 @@ struct CPUMIPSState { CPUMIPSFPUContext fpus[MIPS_FPU_MAX]; /* QEMU */ int error_code; +#define EXCP_TLB_NOMATCH 0x1 +#define EXCP_INST_NOTAVAIL 0x2 /* No valid instruction word for BadInstr */ uint32_t hflags; /* CPU State */ /* TMASK defines different execution modes */ #define MIPS_HFLAG_TMASK 0x1807FF |