Macintosh-Tools/dingusppc
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Prevent clobbering during debugging.

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This commit is contained in:
Maxim Poliakovski 2020-07-20 23:02:07 +02:00
parent 660d227ac7
commit 353035e9ca
2 changed files with 7 additions and 5 deletions
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6
cpu/ppc/ppcexec.cpp
View File

@ -610,7 +610,7 @@ void ppc_exec_single()
} }
/** Execute PPC code until goal_addr is reached. */ /** Execute PPC code until goal_addr is reached. */
void ppc_exec_until(uint32_t goal_addr) void ppc_exec_until(volatile uint32_t goal_addr)
{ {
uint32_t bb_start_la, page_start, delta; uint32_t bb_start_la, page_start, delta;
uint8_t* pc_real; uint8_t* pc_real;
@ -670,7 +670,7 @@ again:
} }
/** Execute PPC code until control is reached the specified region. */ /** Execute PPC code until control is reached the specified region. */
void ppc_exec_dbg(uint32_t start_addr, uint32_t size) void ppc_exec_dbg(volatile uint32_t start_addr, volatile uint32_t size)
{ {
uint32_t bb_start_la, page_start, delta; uint32_t bb_start_la, page_start, delta;
uint8_t* pc_real; uint8_t* pc_real;
@ -692,6 +692,7 @@ void ppc_exec_dbg(uint32_t start_addr, uint32_t size)
page_start = bb_start_la & 0xFFFFF000; page_start = bb_start_la & 0xFFFFF000;
ppc_state.pc = bb_start_la; ppc_state.pc = bb_start_la;
bb_kind = BB_end_kind::BB_NONE; bb_kind = BB_end_kind::BB_NONE;
//printf("DBG Exec: got exception, continue at %X\n", ppc_state.pc);
goto again; goto again;
} }
@ -721,6 +722,7 @@ again:
} }
ppc_state.pc = bb_start_la; ppc_state.pc = bb_start_la;
bb_kind = BB_end_kind::BB_NONE; bb_kind = BB_end_kind::BB_NONE;
//printf("DBG Exec: new basic block at %X, start_addr=%X\n", ppc_state.pc, start_addr);
} else { } else {
ppc_state.pc += 4; ppc_state.pc += 4;
pc_real += 4; pc_real += 4;

6
debugger/debugger.cpp
View File

@ -171,7 +171,7 @@ void exec_single_68k()
/* Getting here means we're outside the emualtor opcode table. /* Getting here means we're outside the emualtor opcode table.
Execute PPC code until we hit the opcode table again. */ Execute PPC code until we hit the opcode table again. */
LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc); LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc);
ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE); ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE - 1);
} }
/** Execute emulated 68k code until target_addr is reached. */ /** Execute emulated 68k code until target_addr is reached. */
@ -188,12 +188,12 @@ void exec_until_68k(uint32_t target_addr)
reg = "PC"; reg = "PC";
ppc_pc = get_reg(reg); ppc_pc = get_reg(reg);
if (ppc_pc >= emu_table_virt && ppc_pc < (emu_table_virt + EMU_68K_TABLE_SIZE)) { 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); LOG_F(9, "Tracing within emulator table, PC = %X\n", ppc_pc);
ppc_exec_single(); ppc_exec_single();
} else { } else {
LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc); LOG_F(9, "Tracing outside the emulator table, PC = %X\n", ppc_pc);
ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE); ppc_exec_dbg(emu_table_virt, EMU_68K_TABLE_SIZE - 1);
} }
reg = "R24"; reg = "R24";
} }