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nvhost_ctrl_gpu: Only read the input parameters if they are actually there.

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Passing nullptr to memcpy is undefined behavior.
This commit is contained in:
Subv 2018-07-30 20:08:36 -05:00
parent 57cd80c410
commit 2482aca7c3
1 changed files with 11 additions and 3 deletions
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8
src/core/hle/service/nvdrv/devices/nvhost_ctrl_gpu.cpp
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@ -97,7 +97,9 @@ u32 nvhost_ctrl_gpu::GetTPCMasks(const std::vector<u8>& input, std::vector<u8>&
u32 nvhost_ctrl_gpu::GetActiveSlotMask(const std::vector<u8>& input, std::vector<u8>& output) {
LOG_DEBUG(Service_NVDRV, "called");
IoctlActiveSlotMask params{};
if (input.size() > 0) {
std::memcpy(&params, input.data(), input.size());
}
params.slot = 0x07;
params.mask = 0x01;
std::memcpy(output.data(), &params, output.size());
@ -107,7 +109,9 @@ u32 nvhost_ctrl_gpu::GetActiveSlotMask(const std::vector<u8>& input, std::vector
u32 nvhost_ctrl_gpu::ZCullGetCtxSize(const std::vector<u8>& input, std::vector<u8>& output) {
LOG_DEBUG(Service_NVDRV, "called");
IoctlZcullGetCtxSize params{};
if (input.size() > 0) {
std::memcpy(&params, input.data(), input.size());
}
params.size = 0x1;
std::memcpy(output.data(), &params, output.size());
return 0;
@ -116,7 +120,11 @@ u32 nvhost_ctrl_gpu::ZCullGetCtxSize(const std::vector<u8>& input, std::vector<u
u32 nvhost_ctrl_gpu::ZCullGetInfo(const std::vector<u8>& input, std::vector<u8>& output) {
LOG_DEBUG(Service_NVDRV, "called");
IoctlNvgpuGpuZcullGetInfoArgs params{};
if (input.size() > 0) {
std::memcpy(&params, input.data(), input.size());
}
params.width_align_pixels = 0x20;
params.height_align_pixels = 0x20;
params.pixel_squares_by_aliquots = 0x400;