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T-EMU
2
The Terma Emulator
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T-EMU
2
The Terma Emulator
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Go to the source code of this file.
Data Structures | |
| struct | temu_CpuIface |
Macros | |
| #define | TEMU_ATC_FETCH 1 |
| Common CPU interface. More... | |
| #define | TEMU_ATC_READ (1 << 1) |
| #define | TEMU_ATC_WRITE (1 << 2) |
| #define | TEMU_ATC_USER (1 << 3) |
| #define | TEMU_ATC_SUPER (1 << 4) |
| #define | TEMU_ATC_HYPER (1 << 5) |
Typedefs | |
| typedef struct temu_CpuIface | temu_CpuIface |
Enumerations | |
| enum | temu_CpuState { teCS_Nominal, teCS_Halted, teCS_Idling } |
| enum | temu_CpuExitReason { teCER_Normal = 0, teCER_Trap, teCER_Halt, teCER_Irq, teCER_Idle, teCER_Break, teCER_WatchR, teCER_WatchW, teCER_Early } |
Functions | |
| OBJSYS_OBJ_TYPE (temu_Cpu) | |
| #define TEMU_ATC_FETCH 1 |
Common CPU interface.
The CPU interface provides common functionality that all processors must implement. This includes the reset and run methods. But also different register access functions. The register access functions are functions, because registers may be banked and we want some type of common interface that can access the current registers. Note that the interface currently only support 32 bit processors.
reset The function executing a reset. It takes as parameter the reset type, which is 0 for a default cold reset.
run Run the main emulator loop for a given number of cycles.
step Run the given number of steps. A step is one instruction, completed or not. E.g. a trapping instruction does not complete but is counted as a step.
raiseTrap Raises a trap on the CPU. THIS FUNCTION DOES NOT RETURN!!!
enterIdleMode Will call longjmp and enter idle mode immediately, this is useful for devices that activates power down mode.
exitEmuCore Will call longjmp to exit the emulator core. This can be used in certain cases where the other exit functions do not suite well. One being that a reset is called from an MMIO write or read, or from a watchdog event. The reset can otherwise be called when the emulator is not running, so in a model you can call reset and then exitEmuCore.
getGpr Read the currently visible general purpose registers. For banked registers (e.g. SPARC reg windows), you should look at the arch specific interface instead.
getFpr32 Read the currently visible floating point registers.
getSpr Read the currently visible special purpose registers.
invalidateAtc Invalidates the ATC cache for the given address range. Flags can be set to control the invalidation. Bit 0: don't invalidate fetch. Bit 1: don't Invalidate read, bit 2: don't invalidate write, bit 3 don't invalidate user, bit 4 don't invalidate super.
translatePageAddress Does a table walk and translates the virtual address to physical page address. For MMU free systems, the function returns the Va masked with ~(page size-1). Otherwise, the return is the translated page address and in the case of failure -1.
| typedef struct temu_CpuIface temu_CpuIface |
| enum temu_CpuExitReason |
| enum temu_CpuState |
| OBJSYS_OBJ_TYPE | ( | temu_Cpu | ) |
1.8.5
