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debugger: a couple of cosmetic improvements.

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This commit is contained in:
Maxim Poliakovski 2022-02-23 17:06:20 +01:00
parent 80a4864a92
commit f1ed56ae9a
3 changed files with 17 additions and 36 deletions
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4
cpu/ppc/ppcemu.h
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@ -630,7 +630,7 @@ extern void ppc_exec_dbg(uint32_t start_addr, uint32_t size);
/* debugging support API */
void print_fprs(void); /* print content of the floating-point registers */
uint64_t get_reg(std::string& reg_name); /* get content of the register reg_name */
void set_reg(std::string& reg_name, uint64_t val); /* set reg_name to val */
uint64_t get_reg(std::string reg_name); /* get content of the register reg_name */
void set_reg(std::string reg_name, uint64_t val); /* set reg_name to val */
#endif /* PPCEMU_H */

6
cpu/ppc/ppcexec.cpp
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@ -643,7 +643,6 @@ static void ppc_exec_until_inner(const uint32_t goal_addr)
}
}
}
LOG_F(9, "PPC-EXEC: goal address reached, icycles=%llu", g_icycles);
}
// outer interpreter loop
@ -784,7 +783,6 @@ static void ppc_exec_dbg_inner(const uint32_t start_addr, const uint32_t size)
}
}
}
LOG_F(9, "PPC-EXEC: goal address reached, icycles=%llu", g_icycles);
}
// outer interpreter loop
@ -1193,10 +1191,10 @@ bail_out:
throw std::invalid_argument(string("Unknown register ") + reg_name);
}
uint64_t get_reg(string& reg_name) {
uint64_t get_reg(string reg_name) {
return reg_op(reg_name, 0, false);
}
void set_reg(string& reg_name, uint64_t val) {
void set_reg(string reg_name, uint64_t val) {
reg_op(reg_name, val, true);
}

43
debugger/debugger.cpp
View File

@ -1,6 +1,6 @@
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
Copyright (C) 2018-22 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
@ -148,25 +148,21 @@ print_bin:
/** Execute one emulated 68k instruction. */
void exec_single_68k()
{
string reg;
uint32_t emu_table_virt, cur_68k_pc, cur_instr_tab_entry, ppc_pc;
/* PPC r24 contains 68k PC advanced by two bytes
as part of instruction prefetching */
reg = "R24";
cur_68k_pc = get_reg(reg) - 2;
cur_68k_pc = get_reg(string("R24")) - 2;
/* PPC r29 contains base address of the emulator opcode table */
reg = "R29";
emu_table_virt = get_reg(reg) & 0xFFF80000;
emu_table_virt = get_reg(string("R29")) & 0xFFF80000;
/* calculate address of the current opcode table entry as follows:
get_word(68k_PC) * entry_size + table_base */
cur_instr_tab_entry = mmu_read_vmem<uint16_t>(cur_68k_pc) * 8 + emu_table_virt;
/* grab the PPC PC too */
reg = "PC";
ppc_pc = get_reg(reg);
ppc_pc = get_reg(string("PC"));
//printf("cur_instr_tab_entry = %X\n", cur_instr_tab_entry);
@ -175,39 +171,29 @@ void exec_single_68k()
one by one until the execution goes outside the opcode table. */
while (ppc_pc >= cur_instr_tab_entry && ppc_pc < cur_instr_tab_entry + 8) {
ppc_exec_single();
reg = "PC";
ppc_pc = get_reg(reg);
LOG_F(9, "Tracing within emulator table, PC = %X\n", ppc_pc);
ppc_pc = get_reg(string("PC"));
}
/* Getting here means we're outside the emualtor opcode table.
Execute PPC code until we hit the opcode table again. */
LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc);
ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE - 1);
}
/** Execute emulated 68k code until target_addr is reached. */
void exec_until_68k(uint32_t target_addr)
{
string reg;
uint32_t emu_table_virt, ppc_pc;
reg = "R29";
emu_table_virt = get_reg(reg) & 0xFFF80000;
emu_table_virt = get_reg(string("R29")) & 0xFFF80000;
reg = "R24";
while (target_addr != (get_reg(reg) - 2)) {
reg = "PC";
ppc_pc = get_reg(reg);
while (target_addr != (get_reg(string("R24")) - 2)) {
ppc_pc = get_reg(string("PC"));
if (ppc_pc >= emu_table_virt && ppc_pc < (emu_table_virt + EMU_68K_TABLE_SIZE - 1)) {
LOG_F(9, "Tracing within emulator table, PC = %X\n", ppc_pc);
ppc_exec_single();
} else {
LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc);
ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE - 1);
}
reg = "R24";
}
}
@ -225,17 +211,14 @@ void print_68k_regs()
reg = "R" + to_string(i + 16);
cout << "A" << dec << i << " : " << uppercase << hex << get_reg(reg) << endl;
}
reg = "R1";
cout << "A7 : " << uppercase << hex << get_reg(reg) << endl;
reg = "R24";
cout << "PC: " << uppercase << hex << get_reg(reg) - 2 << endl;
cout << "A7 : " << uppercase << hex << get_reg(string("R1")) << endl;
reg = "R25";
cout << "SR: " << uppercase << hex << ((get_reg(reg) & 0xFF) << 8) << endl;
cout << "PC: " << uppercase << hex << get_reg(string("R24")) - 2 << endl;
reg = "R26";
cout << "CCR: " << uppercase << hex << get_reg(reg) << endl;
cout << "SR: " << uppercase << hex << ((get_reg("R25") & 0xFF) << 8) << endl;
cout << "CCR: " << uppercase << hex << get_reg(string("R26")) << endl;
}
#endif // ENABLE_68K_DEBUGGER