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authorIan Moffett <ian@osmora.org>2024-03-07 17:28:52 -0500
committerIan Moffett <ian@osmora.org>2024-03-07 18:24:51 -0500
commitf5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch)
tree93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/sysdeps/lyre/generic/entry.cpp
parentbd5969fc876a10b18613302db7087ef3c40f18e1 (diff)
build: Build mlibc + add distclean target
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/sysdeps/lyre/generic/entry.cpp')
-rw-r--r--lib/mlibc/sysdeps/lyre/generic/entry.cpp120
1 files changed, 0 insertions, 120 deletions
diff --git a/lib/mlibc/sysdeps/lyre/generic/entry.cpp b/lib/mlibc/sysdeps/lyre/generic/entry.cpp
deleted file mode 100644
index 4fb0179..0000000
--- a/lib/mlibc/sysdeps/lyre/generic/entry.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-#include <stdint.h>
-#include <stdlib.h>
-#include <bits/ensure.h>
-#include <mlibc/debug.hpp>
-#include <mlibc/elf/startup.h>
-#include <mlibc/all-sysdeps.hpp>
-#include <bits/posix/posix_signal.h>
-#include <lyre/syscall.h>
-
-// defined by the POSIX library
-void __mlibc_initLocale();
-
-extern "C" uintptr_t *__dlapi_entrystack();
-
-extern char **environ;
-static mlibc::exec_stack_data __mlibc_stack_data;
-
-struct LibraryGuard {
- LibraryGuard();
-};
-
-static LibraryGuard guard;
-
-LibraryGuard::LibraryGuard() {
- __mlibc_initLocale();
-
- // Parse the exec() stack.
- mlibc::parse_exec_stack(__dlapi_entrystack(), &__mlibc_stack_data);
- mlibc::set_startup_data(__mlibc_stack_data.argc, __mlibc_stack_data.argv,
- __mlibc_stack_data.envp);
-}
-
-struct GPRState {
- uint64_t ds;
- uint64_t es;
- uint64_t rax;
- uint64_t rbx;
- uint64_t rcx;
- uint64_t rdx;
- uint64_t rsi;
- uint64_t rdi;
- uint64_t rbp;
- uint64_t r8;
- uint64_t r9;
- uint64_t r10;
- uint64_t r11;
- uint64_t r12;
- uint64_t r13;
- uint64_t r14;
- uint64_t r15;
- uint64_t err;
- uint64_t rip;
- uint64_t cs;
- uint64_t rflags;
- uint64_t rsp;
- uint64_t ss;
-};
-
-namespace mlibc {
- int sys_sigentry(void *sigentry) {
- __syscall_ret ret = __syscall(27, sigentry);
- if (ret.errno != 0)
- return ret.errno;
- return 0;
- }
-
- [[noreturn]] int sys_sigreturn(void *context, sigset_t old_mask) {
- __syscall(30, context, old_mask);
- __builtin_unreachable();
- }
-}
-
-static void __mlibc_sigentry(int which, siginfo_t *siginfo,
- void (*sa)(int, siginfo_t *, void *),
- GPRState *ret_context, sigset_t prev_mask) {
-
-/*
- size_t *base_ptr = (size_t *)ret_context->rbp;
-
- mlibc::infoLogger() << "Stacktrace:" << frg::endlog;
- mlibc::infoLogger() << " [" << (void *)ret_context->rip << "]" << frg::endlog;
- for (;;) {
- size_t old_bp = base_ptr[0];
- size_t ret_addr = base_ptr[1];
- if (!ret_addr)
- break;
- size_t off;
- mlibc::infoLogger() << " [" << (void *)ret_addr << "]" << frg::endlog;
- if (!old_bp)
- break;
- base_ptr = (size_t *)old_bp;
- }
-*/
-
- switch ((uintptr_t)sa) {
- // DFL
- case (uintptr_t)(-2):
- mlibc::infoLogger() << "mlibc: Unhandled signal " << which << frg::endlog;
- mlibc::sys_exit(128 + which);
- // IGN
- case (uintptr_t)(-3):
- break;
- default:
- sa(which, siginfo, NULL);
- break;
- }
-
- mlibc::sys_sigreturn(ret_context, prev_mask);
-
- __builtin_unreachable();
-}
-
-extern "C" void __mlibc_entry(int (*main_fn)(int argc, char *argv[], char *env[])) {
- //mlibc::sys_sigentry((void *)__mlibc_sigentry);
-
- // TODO: call __dlapi_enter, otherwise static builds will break (see Linux sysdeps)
- auto result = main_fn(__mlibc_stack_data.argc, __mlibc_stack_data.argv, environ);
- exit(result);
-}
-