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Code Issues Releases Wiki Activity

Always check page_allocated in vm::check_addr

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This commit is contained in:
Nekotekina 2019-08-11 23:31:49 +03:00
parent d45c743877
commit f8f3067deb
7 changed files with 13 additions and 10 deletions
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2
Utilities/GDBDebugServer.cpp
View File

@ -567,7 +567,7 @@ bool GDBDebugServer::cmd_write_memory(gdb_cmd & cmd)
u32 len = hex_to_u32(cmd.data.substr(s + 1, s2 - s - 1));
const char* data_ptr = (cmd.data.c_str()) + s2 + 1;
for (u32 i = 0; i < len; ++i) {
if (vm::check_addr(addr + i, 1, vm::page_allocated | vm::page_writable)) {
if (vm::check_addr(addr + i, 1, vm::page_writable)) {
u8 val;
int res = sscanf_s(data_ptr, "%02hhX", &val);
if (!res) {

6
Utilities/Thread.cpp
View File

@ -1273,7 +1273,7 @@ bool handle_access_violation(u32 addr, bool is_writing, x64_context* context)
return true;
}
if (vm::check_addr(addr, std::max<std::size_t>(1, d_size), vm::page_allocated | (is_writing ? vm::page_writable : vm::page_readable)))
if (vm::check_addr(addr, std::max<std::size_t>(1, d_size), is_writing ? vm::page_writable : vm::page_readable))
{
if (cpu && cpu->test_stopped())
{
@ -1328,12 +1328,12 @@ bool handle_access_violation(u32 addr, bool is_writing, x64_context* context)
u64 data3;
{
vm::reader_lock rlock;
if (vm::check_addr(addr, std::max<std::size_t>(1, d_size), vm::page_allocated | (is_writing ? vm::page_writable : vm::page_readable)))
if (vm::check_addr(addr, std::max<std::size_t>(1, d_size), is_writing ? vm::page_writable : vm::page_readable))
{
// Memory was allocated inbetween, retry
return true;
}
else if (vm::check_addr(addr, std::max<std::size_t>(1, d_size), vm::page_allocated | vm::page_readable))
else if (vm::check_addr(addr, std::max<std::size_t>(1, d_size)))
{
data3 = SYS_MEMORY_PAGE_FAULT_CAUSE_READ_ONLY; // TODO
}

4
rpcs3/Emu/Cell/PPUThread.cpp
View File

@ -501,12 +501,12 @@ std::string ppu_thread::dump() const
u32 stack_min = stack_ptr & ~0xfff;
u32 stack_max = stack_min + 4096;
while (stack_min && vm::check_addr(stack_min - 4096, 4096, vm::page_allocated | vm::page_writable))
while (stack_min && vm::check_addr(stack_min - 4096, 4096, vm::page_writable))
{
stack_min -= 4096;
}
while (stack_max + 4096 && vm::check_addr(stack_max, 4096, vm::page_allocated | vm::page_writable))
while (stack_max + 4096 && vm::check_addr(stack_max, 4096, vm::page_writable))
{
stack_max += 4096;
}

2
rpcs3/Emu/Cell/lv2/sys_gpio.cpp
View File

@ -14,7 +14,7 @@ error_code sys_gpio_get(u64 device_id, vm::ptr<u64> value)
return CELL_ESRCH;
}
if (!vm::check_addr(value.addr(), sizeof(u64), vm::page_allocated | vm::page_writable))
if (!vm::check_addr(value.addr(), sizeof(u64), vm::page_writable))
{
return CELL_EFAULT;
}

2
rpcs3/Emu/Cell/lv2/sys_rsx.cpp
View File

@ -187,7 +187,7 @@ error_code sys_rsx_context_iomap(u32 context_id, u32 io, u32 ea, u32 size, u64 f
for (u32 addr = ea, end = ea + size; addr < end; addr += 0x100000)
{
if (!vm::check_addr(addr, 1, vm::page_allocated | vm::page_readable | (addr < 0x20000000 ? 0 : vm::page_1m_size)))
if (!vm::check_addr(addr, 1, vm::page_readable | (addr < 0x20000000 ? 0 : vm::page_1m_size)))
{
return CELL_EINVAL;
}

3
rpcs3/Emu/Memory/vm.cpp
View File

@ -528,6 +528,9 @@ namespace vm
return false;
}
// Always check this flag
flags |= page_allocated;
for (u32 i = addr / 4096, max = (addr + size - 1) / 4096; i <= max; i++)
{
if (UNLIKELY((g_pages[i].flags & flags) != flags))

2
rpcs3/Emu/Memory/vm.h
View File

@ -52,7 +52,7 @@ namespace vm
bool page_protect(u32 addr, u32 size, u8 flags_test = 0, u8 flags_set = 0, u8 flags_clear = 0);
// Check flags for specified memory range (unsafe)
bool check_addr(u32 addr, u32 size = 1, u8 flags = page_allocated | page_readable);
bool check_addr(u32 addr, u32 size = 1, u8 flags = page_readable);
// Search and map memory in specified memory location (min alignment is 0x10000)
u32 alloc(u32 size, memory_location_t location, u32 align = 0x10000);