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Diffstat (limited to 'lib/mlibc/options/lsb/generic')
-rw-r--r--lib/mlibc/options/lsb/generic/auxv.cpp59
-rw-r--r--lib/mlibc/options/lsb/generic/dso_exit.cpp42
-rw-r--r--lib/mlibc/options/lsb/generic/tls.cpp23
3 files changed, 0 insertions, 124 deletions
diff --git a/lib/mlibc/options/lsb/generic/auxv.cpp b/lib/mlibc/options/lsb/generic/auxv.cpp
deleted file mode 100644
index a4d2c8f..0000000
--- a/lib/mlibc/options/lsb/generic/auxv.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-
-#include <errno.h>
-#include <stdint.h>
-#include <sys/auxv.h>
-
-#include <bits/ensure.h>
-
-extern "C" uintptr_t *__dlapi_entrystack();
-
-int peekauxval(unsigned long type, unsigned long *out) {
- // Find the auxiliary vector by skipping args and environment.
- auto aux = __dlapi_entrystack();
- aux += *aux + 1; // Skip argc and all arguments
- __ensure(!*aux);
- aux++;
- while(*aux) // Now, we skip the environment.
- aux++;
- aux++;
-
- // Parse the auxiliary vector.
- while(true) {
- auto value = aux + 1;
- if(*aux == AT_NULL) {
- errno = ENOENT;
- return -1;
- }else if(*aux == type) {
- *out = *value;
- return 0;
- }
- aux += 2;
- }
-}
-
-unsigned long getauxval(unsigned long type) {
- unsigned long value = 0;
- if(peekauxval(type, &value))
- return 0;
- return value;
-}
-
-// XXX(qookie):
-// This is here because libgcc will call into __getauxval on glibc Linux
-// (which is what it believes we are due to the aarch64-linux-gnu toolchain)
-// in order to find AT_HWCAP to discover if LSE atomics are supported.
-//
-// This is not necessary on a custom Linux toolchain and is purely an artifact of
-// using the host toolchain.
-
-// __gnu_linux__ is the define checked by libgcc
-#if defined(__aarch64__) && defined(__gnu_linux__)
-
-extern "C" unsigned long __getauxval(unsigned long type) {
- unsigned long value = 0;
- if(peekauxval(type, &value))
- return 0;
- return value;
-}
-
-#endif
diff --git a/lib/mlibc/options/lsb/generic/dso_exit.cpp b/lib/mlibc/options/lsb/generic/dso_exit.cpp
deleted file mode 100644
index b8b239d..0000000
--- a/lib/mlibc/options/lsb/generic/dso_exit.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-
-// for memcpy()
-#include <string.h>
-
-#include <bits/ensure.h>
-#include <mlibc/allocator.hpp>
-
-#include <frg/eternal.hpp>
-#include <frg/vector.hpp>
-
-struct ExitHandler {
- void (*function)(void *);
- void *argument;
- void *dsoHandle;
-};
-
-using ExitQueue = frg::vector<ExitHandler, MemoryAllocator>;
-
-ExitQueue &getExitQueue() {
- // use frg::eternal to prevent the compiler from scheduling the destructor
- // by generating a call to __cxa_atexit().
- static frg::eternal<ExitQueue> singleton(getAllocator());
- return singleton.get();
-}
-
-extern "C" int __cxa_atexit(void (*function)(void *), void *argument, void *handle) {
- ExitHandler handler;
- handler.function = function;
- handler.argument = argument;
- handler.dsoHandle = handle;
- getExitQueue().push(handler);
- return 0;
-}
-
-void __mlibc_do_finalize() {
- ExitQueue &eq = getExitQueue();
- for(size_t i = eq.size(); i > 0; i--) {
- auto handler = &eq[i - 1];
- handler->function(handler->argument);
- }
-}
-
diff --git a/lib/mlibc/options/lsb/generic/tls.cpp b/lib/mlibc/options/lsb/generic/tls.cpp
deleted file mode 100644
index 1d7cc30..0000000
--- a/lib/mlibc/options/lsb/generic/tls.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#include <internal-config.h>
-#include <mlibc/thread.hpp>
-#include <mlibc/rtdl-abi.hpp>
-
-#if defined(__riscv) && defined(MLIBC_STATIC_BUILD)
- // On RISC-V, linker optimisation is not guaranteed and so we may still get
- // calls to this function in statically linked binaries.
- // TODO: This will break dlopen calls from statically linked programs.
- extern "C" void *__tls_get_addr(struct __abi_tls_entry *entry) {
- Tcb *tcbPtr = mlibc::get_current_tcb();
- auto dtvPtr = reinterpret_cast<char *>(tcbPtr->dtvPointers[0]);
- return reinterpret_cast<void *>(dtvPtr + entry->offset + TLS_DTV_OFFSET);
- }
-#elif defined(__i386__)
- extern "C" __attribute__((regparm(1))) void *___tls_get_addr(struct __abi_tls_entry *entry) {
- return __dlapi_get_tls(entry);
- }
-#else
- extern "C" void *__tls_get_addr(struct __abi_tls_entry *entry) {
- return __dlapi_get_tls(entry);
- }
-#endif
-