diff options
author | Ian Moffett <ian@osmora.org> | 2024-03-07 17:28:52 -0500 |
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committer | Ian Moffett <ian@osmora.org> | 2024-03-07 18:24:51 -0500 |
commit | f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch) | |
tree | 93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/sysdeps/lyre/generic/entry.cpp | |
parent | bd5969fc876a10b18613302db7087ef3c40f18e1 (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.cpp | 120 |
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); -} - |