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Add svcGetSystemInfo 0x20000 to get citra information (#5955)

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PabloMK7 2022-04-14 16:28:44 +02:00 committed by GitHub
parent ac7285c904
commit 593b0b2d8f
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1 changed files with 83 additions and 0 deletions
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83
src/core/hle/kernel/svc.cpp
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@ -9,6 +9,7 @@
#include <fmt/format.h>
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/scm_rev.h"
#include "common/scope_exit.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
@ -86,6 +87,11 @@ enum class SystemInfoType {
* For the ARM11 NATIVE_FIRM kernel, this is 5, for processes sm, fs, pm, loader, and pxi."
*/
KERNEL_SPAWNED_PIDS = 26,
/**
* Gets citra related information. This parameter is not available on real systems,
* but can be used by homebrew applications to get some emulator info.
*/
CITRA_INFORMATION = 0x20000,
};
/**
@ -99,6 +105,24 @@ enum class SystemInfoMemUsageRegion {
BASE = 3,
};
/**
* Accepted by svcGetSystemInfo param with CITRA_INFORMATION type. Selects which information
* to fetch from Citra. Some string params don't fit in 7 bytes, so they are split.
*/
enum class SystemInfoCitraInformation {
IS_CITRA = 0, // Always set the output to 1, signaling the app is running on Citra.
BUILD_NAME = 10, // (ie: Nightly, Canary).
BUILD_VERSION = 11, // Build version.
BUILD_DATE_PART1 = 20, // Build date first 7 characters.
BUILD_DATE_PART2 = 21, // Build date next 7 characters.
BUILD_DATE_PART3 = 22, // Build date next 7 characters.
BUILD_DATE_PART4 = 23, // Build date last 7 characters.
BUILD_GIT_BRANCH_PART1 = 30, // Git branch first 7 characters.
BUILD_GIT_BRANCH_PART2 = 31, // Git branch last 7 characters.
BUILD_GIT_DESCRIPTION_PART1 = 40, // Git description (commit) first 7 characters.
BUILD_GIT_DESCRIPTION_PART2 = 41, // Git description (commit) last 7 characters.
};
class SVC : public SVCWrapper<SVC> {
public:
SVC(Core::System& system);
@ -1369,6 +1393,16 @@ ResultCode SVC::AcceptSession(Handle* out_server_session, Handle server_port_han
return RESULT_SUCCESS;
}
static void CopyStringPart(char* out, const char* in, int offset, int max_length) {
size_t str_size = strlen(in);
if (offset < str_size) {
strncpy(out, in + offset, max_length - 1);
out[max_length - 1] = '\0';
} else {
out[0] = '\0';
}
}
ResultCode SVC::GetSystemInfo(s64* out, u32 type, s32 param) {
LOG_TRACE(Kernel_SVC, "called type={} param={}", type, param);
@ -1402,6 +1436,55 @@ ResultCode SVC::GetSystemInfo(s64* out, u32 type, s32 param) {
case SystemInfoType::KERNEL_SPAWNED_PIDS:
*out = 5;
break;
case SystemInfoType::CITRA_INFORMATION:
switch ((SystemInfoCitraInformation)param) {
case SystemInfoCitraInformation::IS_CITRA:
*out = 1;
break;
case SystemInfoCitraInformation::BUILD_NAME:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_name, 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_VERSION:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_version, 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 1, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART3:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 2, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_DATE_PART4:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_build_date,
(sizeof(s64) - 1) * 3, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_BRANCH_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_branch,
(sizeof(s64) - 1) * 0, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_BRANCH_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_branch,
(sizeof(s64) - 1) * 1, sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_DESCRIPTION_PART1:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_desc, (sizeof(s64) - 1) * 0,
sizeof(s64));
break;
case SystemInfoCitraInformation::BUILD_GIT_DESCRIPTION_PART2:
CopyStringPart(reinterpret_cast<char*>(out), Common::g_scm_desc, (sizeof(s64) - 1) * 1,
sizeof(s64));
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetSystemInfo citra info param={}", param);
*out = 0;
break;
}
break;
default:
LOG_ERROR(Kernel_SVC, "unknown GetSystemInfo type={} param={}", type, param);
*out = 0;