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Fix 16k page support

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LoveSy 2024-06-02 17:47:53 +08:00
parent a674793be6
commit 7c8e54db1c
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2 changed files with 7 additions and 6 deletions
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1
lsplt/build.gradle.kts
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@ -101,6 +101,7 @@ android {
"-DCMAKE_CXX_FLAGS_RELEASE=$configFlags", "-DCMAKE_CXX_FLAGS_RELEASE=$configFlags",
"-DCMAKE_C_FLAGS_RELEASE=$configFlags", "-DCMAKE_C_FLAGS_RELEASE=$configFlags",
"-DDEBUG_SYMBOLS_PATH=${project.buildDir.absolutePath}/symbols/$name", "-DDEBUG_SYMBOLS_PATH=${project.buildDir.absolutePath}/symbols/$name",
"-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON"
) )
findInPath("ccache")?.let { findInPath("ccache")?.let {
println("Using ccache $it") println("Using ccache $it")

12
lsplt/src/main/jni/lsplt.cc
View File

@ -15,11 +15,13 @@
#include "syscall.hpp" #include "syscall.hpp"
namespace { namespace {
const uintptr_t kPageSize = getpagesize();
inline auto PageStart(uintptr_t addr) { return reinterpret_cast<char *>(((addr)&PAGE_MASK)); } inline auto PageStart(uintptr_t addr) {
return reinterpret_cast<char *>(addr / kPageSize * kPageSize); }
inline auto PageEnd(uintptr_t addr) { inline auto PageEnd(uintptr_t addr) {
return reinterpret_cast<char *>(reinterpret_cast<uintptr_t>(PageStart(addr)) + PAGE_SIZE); return reinterpret_cast<char *>(reinterpret_cast<uintptr_t>(PageStart(addr)) + kPageSize);
} }
struct RegisterInfo { struct RegisterInfo {
@ -113,7 +115,6 @@ public:
} }
bool DoHook(uintptr_t addr, uintptr_t callback, uintptr_t *backup) { bool DoHook(uintptr_t addr, uintptr_t callback, uintptr_t *backup) {
using PAGE = std::array<char, PAGE_SIZE>;
LOGV("Hooking %p", reinterpret_cast<void *>(addr)); LOGV("Hooking %p", reinterpret_cast<void *>(addr));
auto iter = lower_bound(addr); auto iter = lower_bound(addr);
if (iter == end()) return false; if (iter == end()) return false;
@ -139,9 +140,8 @@ public:
} }
for (uintptr_t src = reinterpret_cast<uintptr_t>(backup_addr), dest = info.start, for (uintptr_t src = reinterpret_cast<uintptr_t>(backup_addr), dest = info.start,
end = info.start + len; end = info.start + len;
dest < end; src += PAGE_SIZE, dest += PAGE_SIZE) { dest < end; src += kPageSize, dest += kPageSize) {
static_assert(sizeof(PAGE) == PAGE_SIZE); memcpy(reinterpret_cast<void *>(dest), reinterpret_cast<void *>(src), kPageSize);
*reinterpret_cast<PAGE *>(dest) = *reinterpret_cast<PAGE *>(src);
} }
info.backup = reinterpret_cast<uintptr_t>(backup_addr); info.backup = reinterpret_cast<uintptr_t>(backup_addr);
} }