From f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:52 -0500
Subject: build: Build mlibc + add distclean target

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 lib/mlibc/sysdeps/lyre/generic/entry.cpp | 120 -------------------------------
 1 file changed, 120 deletions(-)
 delete mode 100644 lib/mlibc/sysdeps/lyre/generic/entry.cpp

(limited to 'lib/mlibc/sysdeps/lyre/generic/entry.cpp')

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);
-}
-
-- 
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