shared: Introduce new top-level dir and move 1st party lib code there.

This commit moves all first-party code developed for this project from lib/
to shared/, so that lib/ now only contains third-party code.

The following directories are moved as-is from lib to shared:

    lib/libc            -> shared/libc
    lib/memzip          -> shared/memzip
    lib/netutils        -> shared/netutils
    lib/timeutils       -> shared/timeutils
    lib/upytesthelper   -> shared/upytesthelper

All files in lib/embed/ have been moved to shared/libc/.

lib/mp-readline has been moved to shared/readline.

lib/utils has been moved to shared/runtime, with the exception of
lib/utils/printf.c which has been moved to shared/libc/printf.c.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 0 insertions, 183 deletions

diff --git a/lib/utils/gchelper_generic.c b/lib/utils/gchelper_generic.c
deleted file mode 100644
index 3e7e33ab1..000000000
--- a/lib/utils/gchelper_generic.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include <stdio.h>
-
-#include "py/mpstate.h"
-#include "py/gc.h"
-#include "lib/utils/gchelper.h"
-
-#if MICROPY_ENABLE_GC
-
-// Even if we have specific support for an architecture, it is
-// possible to force use of setjmp-based implementation.
-#if !MICROPY_GCREGS_SETJMP
-
-// We capture here callee-save registers, i.e. ones which may contain
-// interesting values held there by our callers. It doesn't make sense
-// to capture caller-saved registers, because they, well, put on the
-// stack already by the caller.
-#if defined(__x86_64__)
-
-STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
-    register long rbx asm ("rbx");
-    register long rbp asm ("rbp");
-    register long r12 asm ("r12");
-    register long r13 asm ("r13");
-    register long r14 asm ("r14");
-    register long r15 asm ("r15");
-    #ifdef __clang__
-    // TODO:
-    // This is dirty workaround for Clang. It tries to get around
-    // uncompliant (wrt to GCC) behavior of handling register variables.
-    // Application of this patch here is random, and done only to unbreak
-    // MacOS build. Better, cross-arch ways to deal with Clang issues should
-    // be found.
-    asm ("" : "=r" (rbx));
-    asm ("" : "=r" (rbp));
-    asm ("" : "=r" (r12));
-    asm ("" : "=r" (r13));
-    asm ("" : "=r" (r14));
-    asm ("" : "=r" (r15));
-    #endif
-    arr[0] = rbx;
-    arr[1] = rbp;
-    arr[2] = r12;
-    arr[3] = r13;
-    arr[4] = r14;
-    arr[5] = r15;
-}
-
-#elif defined(__i386__)
-
-STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
-    register long ebx asm ("ebx");
-    register long esi asm ("esi");
-    register long edi asm ("edi");
-    register long ebp asm ("ebp");
-    #ifdef __clang__
-    // TODO:
-    // This is dirty workaround for Clang. It tries to get around
-    // uncompliant (wrt to GCC) behavior of handling register variables.
-    // Application of this patch here is random, and done only to unbreak
-    // MacOS build. Better, cross-arch ways to deal with Clang issues should
-    // be found.
-    asm ("" : "=r" (ebx));
-    asm ("" : "=r" (esi));
-    asm ("" : "=r" (edi));
-    asm ("" : "=r" (ebp));
-    #endif
-    arr[0] = ebx;
-    arr[1] = esi;
-    arr[2] = edi;
-    arr[3] = ebp;
-}
-
-#elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__)
-
-// Fallback implementation, prefer gchelper_m0.s or gchelper_m3.s
-
-STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
-    register long r4 asm ("r4");
-    register long r5 asm ("r5");
-    register long r6 asm ("r6");
-    register long r7 asm ("r7");
-    register long r8 asm ("r8");
-    register long r9 asm ("r9");
-    register long r10 asm ("r10");
-    register long r11 asm ("r11");
-    register long r12 asm ("r12");
-    register long r13 asm ("r13");
-    arr[0] = r4;
-    arr[1] = r5;
-    arr[2] = r6;
-    arr[3] = r7;
-    arr[4] = r8;
-    arr[5] = r9;
-    arr[6] = r10;
-    arr[7] = r11;
-    arr[8] = r12;
-    arr[9] = r13;
-}
-
-#elif defined(__aarch64__)
-
-STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
-    const register long x19 asm ("x19");
-    const register long x20 asm ("x20");
-    const register long x21 asm ("x21");
-    const register long x22 asm ("x22");
-    const register long x23 asm ("x23");
-    const register long x24 asm ("x24");
-    const register long x25 asm ("x25");
-    const register long x26 asm ("x26");
-    const register long x27 asm ("x27");
-    const register long x28 asm ("x28");
-    const register long x29 asm ("x29");
-    arr[0] = x19;
-    arr[1] = x20;
-    arr[2] = x21;
-    arr[3] = x22;
-    arr[4] = x23;
-    arr[5] = x24;
-    arr[6] = x25;
-    arr[7] = x26;
-    arr[8] = x27;
-    arr[9] = x28;
-    arr[10] = x29;
-}
-
-#else
-
-#error "Architecture not supported for gc_helper_get_regs. Set MICROPY_GCREGS_SETJMP to use the fallback implementation."
-
-#endif
-
-#else // !MICROPY_GCREGS_SETJMP
-
-// Even if we have specific support for an architecture, it is
-// possible to force use of setjmp-based implementation.
-
-STATIC void gc_helper_get_regs(gc_helper_regs_t arr) {
-    setjmp(arr);
-}
-
-#endif // MICROPY_GCREGS_SETJMP
-
-// Explicitly mark this as noinline to make sure the regs variable
-// is effectively at the top of the stack: otherwise, in builds where
-// LTO is enabled and a lot of inlining takes place we risk a stack
-// layout where regs is lower on the stack than pointers which have
-// just been allocated but not yet marked, and get incorrectly sweeped.
-MP_NOINLINE void gc_helper_collect_regs_and_stack(void) {
-    gc_helper_regs_t regs;
-    gc_helper_get_regs(regs);
-    // GC stack (and regs because we captured them)
-    void **regs_ptr = (void **)(void *)&regs;
-    gc_collect_root(regs_ptr, ((uintptr_t)MP_STATE_THREAD(stack_top) - (uintptr_t)&regs) / sizeof(uintptr_t));
-}
-
-#endif // MICROPY_ENABLE_GC