2  * QEMU AVR CPU
4  * Copyright (c) 2016-2020 Michael Rolnik
18  * <http://www.gnu.org/licenses/lgpl-2.1.html>
24 #include "cpu-qom.h"
25 #include "exec/cpu-defs.h"
28 #error "AVR 8-bit does not support user mode"
45 /* Number of CPU registers */
61 /* CPU registers, IO registers, and SRAM */
63 /* CPU registers specifically, these are mapped at the start of data */
67  * mapped peripherals, mapped just after CPU registers
83     AVR_FEATURE_RMW, /* Read Modify Write - XCH LAC LAS LAT */
119     uint32_t rampD; /* 0x00ff0000 8 bits */
120     uint32_t rampX; /* 0x00ff0000 8 bits */
121     uint32_t rampY; /* 0x00ff0000 8 bits */
122     uint32_t rampZ; /* 0x00ff0000 8 bits */
123     uint32_t eind; /* 0x00ff0000 8 bits */
125     uint32_t r[NUMBER_OF_CPU_REGISTERS]; /* 8 bits each */
131     bool fullacc; /* CPU/MEM if true MEM only otherwise */
140  *  A AVR CPU.
156  *  A AVR CPU model.
167 void avr_cpu_do_interrupt(CPUState *cpu);
168 bool avr_cpu_exec_interrupt(CPUState *cpu, int int_req);
169 hwaddr avr_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
170 int avr_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
171 int avr_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
173 vaddr avr_cpu_gdb_adjust_breakpoint(CPUState *cpu, vaddr addr);
177     return (env->features & (1U << feature)) != 0;  in avr_feature()
182     env->features |= (1U << feature);  in set_avr_feature()
187 int cpu_avr_exec(CPUState *cpu);
199     *pc = env->pc_w * 2;  in cpu_get_tb_cpu_state()
202     if (env->fullacc) {  in cpu_get_tb_cpu_state()
205     if (env->skip) {  in cpu_get_tb_cpu_state()
214     return env->sregI != 0;  in cpu_interrupts_enabled()
219     return (env->sregC) << 0  in cpu_get_sreg()
220          | (env->sregZ) << 1  in cpu_get_sreg()
221          | (env->sregN) << 2  in cpu_get_sreg()
222          | (env->sregV) << 3  in cpu_get_sreg()
223          | (env->sregS) << 4  in cpu_get_sreg()
224          | (env->sregH) << 5  in cpu_get_sreg()
225          | (env->sregT) << 6  in cpu_get_sreg()
226          | (env->sregI) << 7;  in cpu_get_sreg()
231     env->sregC = (sreg >> 0) & 0x01;  in cpu_set_sreg()
232     env->sregZ = (sreg >> 1) & 0x01;  in cpu_set_sreg()
233     env->sregN = (sreg >> 2) & 0x01;  in cpu_set_sreg()
234     env->sregV = (sreg >> 3) & 0x01;  in cpu_set_sreg()
235     env->sregS = (sreg >> 4) & 0x01;  in cpu_set_sreg()
236     env->sregH = (sreg >> 5) & 0x01;  in cpu_set_sreg()
237     env->sregT = (sreg >> 6) & 0x01;  in cpu_set_sreg()
238     env->sregI = (sreg >> 7) & 0x01;  in cpu_set_sreg()
245 #include "exec/cpu-all.h"