| /* 3b2_defs.h: AT&T 3B2 Model 400 Simulator Definitions | |
| Copyright (c) 2017, Seth J. Morabito | |
| Permission is hereby granted, free of charge, to any person | |
| obtaining a copy of this software and associated documentation | |
| files (the "Software"), to deal in the Software without | |
| restriction, including without limitation the rights to use, copy, | |
| modify, merge, publish, distribute, sublicense, and/or sell copies | |
| of the Software, and to permit persons to whom the Software is | |
| furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be | |
| included in all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
| BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| SOFTWARE. | |
| Except as contained in this notice, the name of the author shall | |
| not be used in advertising or otherwise to promote the sale, use or | |
| other dealings in this Software without prior written authorization | |
| from the author. | |
| */ | |
| #ifndef _3B2_DEFS_H_ | |
| #define _3B2_DEFS_H_ | |
| #include "sim_defs.h" | |
| #include "sim_tmxr.h" | |
| #include <setjmp.h> | |
| #define FALSE 0 | |
| #define TRUE 1 | |
| #if defined (__GNUC__) | |
| #define noret void __attribute__((noreturn)) | |
| #else | |
| #define noret void | |
| #endif | |
| #if defined(__GLIBC__) && !defined(__cplusplus) | |
| /* use glibc internal longjmp to bypass fortify checks */ | |
| noret __libc_longjmp (jmp_buf buf, int val); | |
| #define longjmp __libc_longjmp | |
| #endif | |
| /* -v flag for examine routine */ | |
| #define EX_V_FLAG 1 << 21 | |
| #define MAX_HIST_SIZE 10000000 | |
| #define MIN_HIST_SIZE 64 | |
| #define MAXMEMSIZE (1 << 22) /* 4 MB */ | |
| #define MEM_SIZE (cpu_unit.capac) /* actual memory size */ | |
| #define UNIT_V_MSIZE (UNIT_V_UF) | |
| #define UNIT_MSIZE (1 << UNIT_V_MSIZE) | |
| #define WD_MSB 0x80000000 | |
| #define HW_MSB 0x8000 | |
| #define BT_MSB 0x80 | |
| #define WORD_MASK 0xffffffff | |
| #define HALF_MASK 0xffffu | |
| #define BYTE_MASK 0xff | |
| /* | |
| * | |
| * Physical memory in the 3B2 is arranged as follows: | |
| * | |
| * 0x00000000 - 0x0000FFFF: 64KB ROM (32K used) | |
| * 0x00040000 - 0x0004FFFF: IO | |
| * 0x02000000 - 0x023FFFFF: 4MB RAM ("Mainstore"), | |
| * | |
| */ | |
| #define PHYS_MEM_BASE 0x2000000 | |
| #define ROM_BASE 0 | |
| #define IO_BASE 0x40000 | |
| #define IO_SIZE 0x10000 | |
| #define IOB_BASE 0x200000 | |
| #define IOB_SIZE 0x1E00000 | |
| /* Register numbers */ | |
| #define NUM_FP 9 | |
| #define NUM_AP 10 | |
| #define NUM_PSW 11 | |
| #define NUM_SP 12 | |
| #define NUM_PCBP 13 | |
| #define NUM_ISP 14 | |
| #define NUM_PC 15 | |
| #define CPU_CM (cpu_km ? L_KERNEL : ((R[NUM_PSW] >> PSW_CM) & 3)) | |
| /* Simulator stop codes */ | |
| #define STOP_RSRV 1 | |
| #define STOP_IBKPT 2 /* Breakpoint encountered */ | |
| #define STOP_OPCODE 3 /* Invalid opcode */ | |
| #define STOP_IRQ 4 /* Interrupt */ | |
| #define STOP_EX 5 /* Exception */ | |
| #define STOP_ESTK 6 /* Exception stack too deep */ | |
| #define STOP_MMU 7 /* Unimplemented MMU Feature */ | |
| /* Exceptional conditions handled within the instruction loop */ | |
| #define ABORT_EXC 1 /* CPU exception */ | |
| #define ABORT_TRAP 2 /* CPU trap */ | |
| /* Contexts for aborts */ | |
| #define C_NONE 0 /* No context. Normal handling. */ | |
| #define C_NORMAL_GATE_VECTOR 1 | |
| #define C_PROCESS_GATE_PCB 2 | |
| #define C_PROCESS_OLD_PCB 3 | |
| #define C_PROCESS_NEW_PCB 4 | |
| #define C_RESET_GATE_VECTOR 5 | |
| #define C_RESET_INT_STACK 6 | |
| #define C_RESET_NEW_PCB 7 | |
| #define C_RESET_SYSTEM_DATA 8 | |
| #define C_STACK_FAULT 9 | |
| /* Debug flags */ | |
| #define READ_MSG 0x01 | |
| #define WRITE_MSG 0x02 | |
| #define DECODE_MSG 0x04 | |
| #define EXECUTE_MSG 0x08 | |
| #define INIT_MSG 0x10 | |
| #define IRQ_MSG 0x20 | |
| #define IO_D_MSG 0x40 | |
| #define TRACE_MSG 0x80 | |
| /* Data types operated on by instructions. NB: These integer values | |
| have meaning when decoding instructions, so this is not just an | |
| enum. Please don't change them. */ | |
| #define UW 0 /* Unsigned Word */ | |
| #define UH 2 /* Unsigned Halfword */ | |
| #define BT 3 /* Unsigned Byte */ | |
| #define WD 4 /* Signed Word */ | |
| #define HW 6 /* Signed Halfword */ | |
| #define SB 7 /* Signed Byte */ | |
| #define NA -1 | |
| /* | |
| * Exceptions are described on page 2-66 of the WE32100 manual | |
| */ | |
| /* Exception Types */ | |
| #define RESET_EXCEPTION 0 | |
| #define PROCESS_EXCEPTION 1 | |
| #define STACK_EXCEPTION 2 | |
| #define NORMAL_EXCEPTION 3 | |
| /* Reset Exceptions */ | |
| #define OLD_PCB_FAULT 0 | |
| #define SYSTEM_DATA_FAULT 1 | |
| #define INTERRUPT_STACK_FAULT 2 | |
| #define EXTERNAL_RESET 3 | |
| #define NEW_PCB_FAULT 4 | |
| #define GATE_VECTOR_FAULT 6 | |
| /* Processor Exceptions */ | |
| #define GATE_PCB_FAULT 1 | |
| /* Stack Exceptions */ | |
| #define STACK_BOUND 0 | |
| #define STACK_FAULT 1 | |
| #define INTERRUPT_ID_FETCH 3 | |
| /* Normal Exceptions */ | |
| #define INTEGER_ZERO_DIVIDE 0 | |
| #define TRACE_TRAP 1 | |
| #define ILLEGAL_OPCODE 2 | |
| #define RESERVED_OPCODE 3 | |
| #define INVALID_DESCRIPTOR 4 | |
| #define EXTERNAL_MEMORY_FAULT 5 | |
| #define N_GATE_VECTOR 6 | |
| #define ILLEGAL_LEVEL_CHANGE 7 | |
| #define RESERVED_DATATYPE 8 | |
| #define INTEGER_OVERFLOW 9 | |
| #define PRIVILEGED_OPCODE 10 | |
| #define BREAKPOINT_TRAP 14 | |
| #define PRIVILEGED_REGISTER 15 | |
| #define PSW_ET 0 | |
| #define PSW_TM 2u | |
| #define PSW_ISC 3u | |
| #define PSW_I 7 | |
| #define PSW_R 8 | |
| #define PSW_PM 9 | |
| #define PSW_CM 11 | |
| #define PSW_IPL 13 | |
| #define PSW_TE 17 | |
| #define PSW_C 18 | |
| #define PSW_V 19 | |
| #define PSW_Z 20 | |
| #define PSW_N 21 | |
| #define PSW_OE 22 | |
| #define PSW_CD 23 | |
| #define PSW_QIE 24 | |
| #define PSW_CFD 25 | |
| /* Access Request types */ | |
| #define ACC_MT 0 /* Move Translated */ | |
| #define ACC_SPW 1 /* Support processor write */ | |
| #define ACC_SPF 3 /* Support processor fetch */ | |
| #define ACC_IR 7 /* Interlocked read */ | |
| #define ACC_AF 8 /* Address fetch */ | |
| #define ACC_OF 9 /* Operand fetch */ | |
| #define ACC_W 10 /* Write */ | |
| #define ACC_IFAD 12 /* Instruction fetch after discontinuity */ | |
| #define ACC_IF 13 /* Instruction fetch */ | |
| #define L_KERNEL 0 | |
| #define L_EXEC 1 | |
| #define L_SUPER 2 | |
| #define L_USER 3 | |
| #define PSW_ET_MASK 3u | |
| #define PSW_TM_MASK (1u << PSW_TM) | |
| #define PSW_ISC_MASK (15u << PSW_ISC) | |
| #define PSW_I_MASK (1u << PSW_I) | |
| #define PSW_R_MASK (1u << PSW_R) | |
| #define PSW_PM_MASK (3u << PSW_PM) | |
| #define PSW_CM_MASK (3u << PSW_CM) | |
| #define PSW_IPL_MASK (15u << PSW_IPL) | |
| #define PSW_TE_MASK (1u << PSW_TE) | |
| #define PSW_C_MASK (1u << PSW_C) | |
| #define PSW_V_MASK (1u << PSW_V) | |
| #define PSW_N_MASK (1u << PSW_N) | |
| #define PSW_Z_MASK (1u << PSW_Z) | |
| #define PSW_OE_MASK (1u << PSW_OE) | |
| #define PSW_CD_MASK (1u << PSW_CD) | |
| #define PSW_QIE_MASK (1u << PSW_QIE) | |
| #define PSW_CFD_MASK (1u << PSW_CFD) | |
| #define PSW_CUR_IPL (((R[NUM_PSW] & PSW_IPL_MASK) >> PSW_IPL) & 0xf) | |
| #define TODBASE 0x41000 | |
| #define TODSIZE 0x40 | |
| #define TIMERBASE 0x42000 | |
| #define TIMERSIZE 0x20 | |
| #define NVRAMBASE 0x43000 | |
| #define NVRAMSIZE 0x1000 | |
| #define CSRBASE 0x44000 | |
| #define CSRSIZE 0x100 | |
| #define CSRTIMO 0x8000 /* Bus Timeout Error */ | |
| #define CSRPARE 0x4000 /* Memory Parity Error */ | |
| #define CSRRRST 0x2000 /* System Reset Request */ | |
| #define CSRALGN 0x1000 /* Memory Alignment Fault */ | |
| #define CSRLED 0x0800 /* Failure LED */ | |
| #define CSRFLOP 0x0400 /* Floppy Motor On */ | |
| #define CSRRES 0x0200 /* Reserved */ | |
| #define CSRITIM 0x0100 /* Inhibit Timers */ | |
| #define CSRIFLT 0x0080 /* Inhibit Faults */ | |
| #define CSRCLK 0x0040 /* Clock Interrupt */ | |
| #define CSRPIR8 0x0020 /* Programmed Interrupt 8 */ | |
| #define CSRPIR9 0x0010 /* Programmed Interrupt 9 */ | |
| #define CSRUART 0x0008 /* UART Interrupt */ | |
| #define CSRDISK 0x0004 /* Floppy Interrupt */ | |
| #define CSRDMA 0x0002 /* DMA Interrupt */ | |
| #define CSRIOF 0x0001 /* I/O Board Fail */ | |
| #define TIMER_REG_DIVA 0x03 | |
| #define TIMER_REG_DIVB 0x07 | |
| #define TIMER_REG_DIVC 0x0b | |
| #define TIMER_REG_CTRL 0x0f | |
| #define TIMER_CLR_LATCH 0x13 | |
| /* Clock state bitmasks */ | |
| #define CLK_MD 0x0E /* Mode mask */ | |
| #define CLK_RW 0x30 /* RW mask */ | |
| #define CLK_SC 0xC0 /* SC mask */ | |
| #define CLK_LAT 0x00 | |
| #define CLK_LSB 0x10 | |
| #define CLK_MSB 0x20 | |
| #define CLK_LMB 0x30 | |
| #define CLK_MD0 0x00 | |
| #define CLK_MD1 0x02 | |
| #define CLK_MD2 0x04 | |
| #define CLK_MD3 0x06 | |
| #define CLK_MD4 0x08 | |
| #define CLK_MD5 0x0a | |
| /* Timer definitions */ | |
| #define TMR_CLK 0 /* The clock responsible for IPL 15 interrupts */ | |
| #define TPS_CLK 100 /* 100 ticks per second */ | |
| #define CLK_MIN_TICKS 500 /* No fewer than 500 sim steps between ticks */ | |
| /* TIMING SECTION */ | |
| /* ----------------------------------------------- */ | |
| /* Calculate delays (in simulator steps) for times */ | |
| /* System clock runs at 10MHz; 100ns period. */ | |
| #define US_PER_INST 1.0 | |
| #define INST_PER_MS (1000.0 / US_PER_INST) | |
| #define DELAY_US(us) ((uint32)((us) / US_PER_INST)) | |
| #define DELAY_MS(ms) ((uint32)(((ms) * 1000) / US_PER_INST)) | |
| /* global symbols from the CPU */ | |
| extern jmp_buf save_env; | |
| extern uint32 *ROM; | |
| extern uint32 *RAM; | |
| extern uint32 R[16]; | |
| extern REG cpu_reg[]; | |
| extern DEVICE cpu_dev; | |
| extern UNIT cpu_unit; | |
| extern uint8 fault; | |
| extern DEBTAB sys_deb_tab[]; | |
| extern t_bool cpu_km; | |
| /* Generic callback function */ | |
| typedef void (*callback)(void); | |
| /* global symbols from the DMAC */ | |
| extern DEVICE dmac_dev; | |
| /* global symbols from the CSR */ | |
| extern uint16 csr_data; | |
| /* global symbols from the IU */ | |
| extern t_bool iu_increment_a; | |
| extern t_bool iu_increment_b; | |
| extern void increment_modep_a(); | |
| extern void increment_modep_b(); | |
| /* global symbols from the MMU */ | |
| extern t_bool mmu_enabled(); | |
| extern void mmu_enable(); | |
| extern void mmu_disable(); | |
| extern uint8 read_b(uint32 va, uint8 acc); | |
| extern uint16 read_h(uint32 va, uint8 acc); | |
| extern uint32 read_w(uint32 va, uint8 acc); | |
| extern void write_b(uint32 va, uint8 val); | |
| extern void write_h(uint32 va, uint16 val); | |
| extern void write_w(uint32 va, uint32 val); | |
| /* Globally scoped CPU functions */ | |
| void cpu_abort(uint8 et, uint8 isc); | |
| void cpu_set_irq(uint8 ipl, uint8 id, uint16 csr_flags); | |
| void cpu_clear_irq(uint8 ipl, uint16 csr_flags); | |
| /* Globally scoped IO functions */ | |
| uint32 io_read(uint32 pa, size_t size); | |
| void io_write(uint32 pa, uint32 val, size_t size); | |
| #endif |