summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/cpu/drcfe.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/cpu/drcfe.h')
-rw-r--r--src/devices/cpu/drcfe.h104
1 files changed, 51 insertions, 53 deletions
diff --git a/src/devices/cpu/drcfe.h b/src/devices/cpu/drcfe.h
index 66b55bcf4fb..a781f6d1156 100644
--- a/src/devices/cpu/drcfe.h
+++ b/src/devices/cpu/drcfe.h
@@ -28,55 +28,54 @@
a linked list and returned for further processing by the backend.
***************************************************************************/
+#ifndef MAME_CPU_DRCFE_H
+#define MAME_CPU_DRCFE_H
#pragma once
-#ifndef __DRCFE_H__
-#define __DRCFE_H__
-
//**************************************************************************
// CONSTANTS
//**************************************************************************
// this defines a branch targetpc that is dynamic at runtime
-const offs_t BRANCH_TARGET_DYNAMIC = ~0;
+constexpr offs_t BRANCH_TARGET_DYNAMIC = ~offs_t(0);
// opcode branch flags
-const uint32_t OPFLAG_IS_UNCONDITIONAL_BRANCH = 0x00000001; // instruction is unconditional branch
-const uint32_t OPFLAG_IS_CONDITIONAL_BRANCH = 0x00000002; // instruction is conditional branch
-const uint32_t OPFLAG_IS_BRANCH = (OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_IS_CONDITIONAL_BRANCH);
-const uint32_t OPFLAG_IS_BRANCH_TARGET = 0x00000004; // instruction is the target of a branch
-const uint32_t OPFLAG_IN_DELAY_SLOT = 0x00000008; // instruction is in the delay slot of a branch
-const uint32_t OPFLAG_INTRABLOCK_BRANCH = 0x00000010; // instruction branches within the block
+constexpr u32 OPFLAG_IS_UNCONDITIONAL_BRANCH = 0x00000001; // instruction is unconditional branch
+constexpr u32 OPFLAG_IS_CONDITIONAL_BRANCH = 0x00000002; // instruction is conditional branch
+constexpr u32 OPFLAG_IS_BRANCH = (OPFLAG_IS_UNCONDITIONAL_BRANCH | OPFLAG_IS_CONDITIONAL_BRANCH);
+constexpr u32 OPFLAG_IS_BRANCH_TARGET = 0x00000004; // instruction is the target of a branch
+constexpr u32 OPFLAG_IN_DELAY_SLOT = 0x00000008; // instruction is in the delay slot of a branch
+constexpr u32 OPFLAG_INTRABLOCK_BRANCH = 0x00000010; // instruction branches within the block
// opcode exception flags
-const uint32_t OPFLAG_CAN_TRIGGER_SW_INT = 0x00000020; // instruction can trigger a software interrupt
-const uint32_t OPFLAG_CAN_EXPOSE_EXTERNAL_INT = 0x00000040; // instruction can expose an external interrupt
-const uint32_t OPFLAG_CAN_CAUSE_EXCEPTION = 0x00000080; // instruction may generate exception
-const uint32_t OPFLAG_WILL_CAUSE_EXCEPTION = 0x00000100; // instruction will generate exception
-const uint32_t OPFLAG_PRIVILEGED = 0x00000200; // instruction is privileged
+constexpr u32 OPFLAG_CAN_TRIGGER_SW_INT = 0x00000020; // instruction can trigger a software interrupt
+constexpr u32 OPFLAG_CAN_EXPOSE_EXTERNAL_INT = 0x00000040; // instruction can expose an external interrupt
+constexpr u32 OPFLAG_CAN_CAUSE_EXCEPTION = 0x00000080; // instruction may generate exception
+constexpr u32 OPFLAG_WILL_CAUSE_EXCEPTION = 0x00000100; // instruction will generate exception
+constexpr u32 OPFLAG_PRIVILEGED = 0x00000200; // instruction is privileged
// opcode virtual->physical translation flags
-const uint32_t OPFLAG_VALIDATE_TLB = 0x00000400; // instruction must validate TLB before execution
-const uint32_t OPFLAG_MODIFIES_TRANSLATION = 0x00000800; // instruction modifies the TLB
-const uint32_t OPFLAG_COMPILER_PAGE_FAULT = 0x00001000; // compiler hit a page fault when parsing
-const uint32_t OPFLAG_COMPILER_UNMAPPED = 0x00002000; // compiler hit unmapped memory when parsing
+constexpr u32 OPFLAG_VALIDATE_TLB = 0x00000400; // instruction must validate TLB before execution
+constexpr u32 OPFLAG_MODIFIES_TRANSLATION = 0x00000800; // instruction modifies the TLB
+constexpr u32 OPFLAG_COMPILER_PAGE_FAULT = 0x00001000; // compiler hit a page fault when parsing
+constexpr u32 OPFLAG_COMPILER_UNMAPPED = 0x00002000; // compiler hit unmapped memory when parsing
// opcode flags
-const uint32_t OPFLAG_INVALID_OPCODE = 0x00004000; // instruction is invalid
-const uint32_t OPFLAG_VIRTUAL_NOOP = 0x00008000; // instruction is a virtual no-op
+constexpr u32 OPFLAG_INVALID_OPCODE = 0x00004000; // instruction is invalid
+constexpr u32 OPFLAG_VIRTUAL_NOOP = 0x00008000; // instruction is a virtual no-op
// opcode sequence flow flags
-const uint32_t OPFLAG_REDISPATCH = 0x00010000; // instruction must redispatch after completion
-const uint32_t OPFLAG_RETURN_TO_START = 0x00020000; // instruction must jump back to the beginning after completion
-const uint32_t OPFLAG_END_SEQUENCE = 0x00040000; // this is the last instruction in a sequence
-const uint32_t OPFLAG_CAN_CHANGE_MODES = 0x00080000; // instruction can change modes
+constexpr u32 OPFLAG_REDISPATCH = 0x00010000; // instruction must redispatch after completion
+constexpr u32 OPFLAG_RETURN_TO_START = 0x00020000; // instruction must jump back to the beginning after completion
+constexpr u32 OPFLAG_END_SEQUENCE = 0x00040000; // this is the last instruction in a sequence
+constexpr u32 OPFLAG_CAN_CHANGE_MODES = 0x00080000; // instruction can change modes
// execution semantics
-const uint32_t OPFLAG_READS_MEMORY = 0x00100000; // instruction reads memory
-const uint32_t OPFLAG_WRITES_MEMORY = 0x00200000; // instruction writes memory
+constexpr u32 OPFLAG_READS_MEMORY = 0x00100000; // instruction reads memory
+constexpr u32 OPFLAG_WRITES_MEMORY = 0x00200000; // instruction writes memory
@@ -102,25 +101,25 @@ struct opcode_desc
// copy of up to 16 bytes of opcode
union
{
- uint8_t b[16];
- uint16_t w[8];
- uint32_t l[4];
- uint64_t q[2];
+ u8 b[16];
+ u16 w[8];
+ u32 l[4];
+ u64 q[2];
} opptr; // pointer to opcode memory
// information about this instruction's execution
- uint8_t length; // length in bytes of this opcode
- uint8_t delayslots; // number of delay slots (for branches)
- uint8_t skipslots; // number of skip slots (for branches)
- uint32_t flags; // OPFLAG_* opcode flags
- uint32_t userflags; // core specific flags
- uint32_t userdata0; // core specific data
- uint32_t cycles; // number of cycles needed to execute
+ u8 length; // length in bytes of this opcode
+ u8 delayslots; // number of delay slots (for branches)
+ u8 skipslots; // number of skip slots (for branches)
+ u32 flags; // OPFLAG_* opcode flags
+ u32 userflags; // core specific flags
+ u32 userdata0; // core specific data
+ u32 cycles; // number of cycles needed to execute
// register usage information
- uint32_t regin[4]; // input registers
- uint32_t regout[4]; // output registers
- uint32_t regreq[4]; // required output registers
+ u32 regin[4]; // input registers
+ u32 regout[4]; // output registers
+ u32 regreq[4]; // required output registers
};
@@ -129,27 +128,27 @@ class drc_frontend
{
public:
// construction/destruction
- drc_frontend(device_t &cpu, uint32_t window_start, uint32_t window_end, uint32_t max_sequence);
+ drc_frontend(device_t &cpu, u32 window_start, u32 window_end, u32 max_sequence);
virtual ~drc_frontend();
// describe a block
- const opcode_desc *describe_code(offs_t startpc);
+ opcode_desc const *describe_code(offs_t startpc);
protected:
// required overrides
- virtual bool describe(opcode_desc &desc, const opcode_desc *prev) = 0;
+ virtual bool describe(opcode_desc &desc, opcode_desc const *prev) = 0;
private:
// internal helpers
- opcode_desc *describe_one(offs_t curpc, const opcode_desc *prevdesc, bool in_delay_slot = false);
- void build_sequence(int start, int end, uint32_t endflag);
- void accumulate_required_backwards(opcode_desc &desc, uint32_t *reqmask);
+ opcode_desc *describe_one(offs_t curpc, opcode_desc const *prevdesc, bool in_delay_slot = false);
+ void build_sequence(int start, int end, u32 endflag);
+ void accumulate_required_backwards(opcode_desc &desc, u32 *reqmask);
void release_descriptions();
// configuration parameters
- uint32_t m_window_start; // code window start offset = startpc - window_start
- uint32_t m_window_end; // code window end offset = startpc + window_end
- uint32_t m_max_sequence; // maximum instructions to include in a sequence
+ u32 m_window_start; // code window start offset = startpc - window_start
+ u32 m_window_end; // code window end offset = startpc + window_end
+ u32 m_max_sequence; // maximum instructions to include in a sequence
// CPU parameters
cpu_device & m_cpudevice; // CPU device object
@@ -159,8 +158,7 @@ private:
// opcode descriptor arrays
simple_list<opcode_desc> m_desc_live_list; // list of live descriptions
fixed_allocator<opcode_desc> m_desc_allocator; // fixed allocator for descriptions
- std::vector<opcode_desc *> m_desc_array; // array of descriptions in PC order
+ std::vector<opcode_desc *> m_desc_array; // array of descriptions in PC order
};
-
-#endif /* __DRCFE_H__ */
+#endif // MAME_CPU_DRCFE_H