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As discussed at https://sourceware.org/pipermail/newlib/2025/022045.html, sending a patch reverting removal of AArch64 ILP32 ABI support. Radek --- From 0b67661adf790719d91f1ee8be3a737316dfc4d6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Radek=20Barto=C5=88?= Date: Thu, 24 Jul 2025 12:36:02 +0200 Subject: [PATCH] newlib: libc: return back support for AArch64 ILP32 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch is returning back support for AArch64 ILP32 ABI that was removed in de479a54e22e8fcb6262639a8e67fe8b00a27c37 commit but is needed to ensure source code compatibility with GCC 14. The change in newlib/libc/machine/aarch64/asmdefs.h makes it out-of-the-sync with the current upstream implementation in https://github.com/ARM-software/optimized-routines repository. Signed-off-by: Radek BartoĊˆ --- newlib/libc/machine/aarch64/asmdefs.h | 14 ++++++++++++++ newlib/libc/machine/aarch64/memchr.S | 2 ++ newlib/libc/machine/aarch64/memcmp.S | 4 ++++ newlib/libc/machine/aarch64/memcpy.S | 3 +++ newlib/libc/machine/aarch64/memrchr.S | 1 + newlib/libc/machine/aarch64/memset.S | 3 +++ newlib/libc/machine/aarch64/strchr.S | 1 + newlib/libc/machine/aarch64/strchrnul.S | 1 + newlib/libc/machine/aarch64/strcmp.S | 2 ++ newlib/libc/machine/aarch64/strcpy.S | 2 ++ newlib/libc/machine/aarch64/strlen.S | 1 + newlib/libc/machine/aarch64/strncmp.S | 3 +++ newlib/libc/machine/aarch64/strnlen.S | 2 ++ newlib/libc/machine/aarch64/strrchr.S | 1 + 14 files changed, 40 insertions(+) diff --git a/newlib/libc/machine/aarch64/asmdefs.h b/newlib/libc/machine/aarch64/asmdefs.h index 6c99fa704..cf156a5a8 100644 --- a/newlib/libc/machine/aarch64/asmdefs.h +++ b/newlib/libc/machine/aarch64/asmdefs.h @@ -88,4 +88,18 @@ GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI|FEATURE_1_PAC) #define L(l) .L ## l +#ifdef __ILP32__ + /* Sanitize padding bits of pointer arguments as per aapcs64 */ +#define PTR_ARG(n) mov w##n, w##n +#else +#define PTR_ARG(n) +#endif + +#ifdef __ILP32__ + /* Sanitize padding bits of size arguments as per aapcs64 */ +#define SIZE_ARG(n) mov w##n, w##n +#else +#define SIZE_ARG(n) +#endif + #endif diff --git a/newlib/libc/machine/aarch64/memchr.S b/newlib/libc/machine/aarch64/memchr.S index 074a004cf..a0f305e0f 100644 --- a/newlib/libc/machine/aarch64/memchr.S +++ b/newlib/libc/machine/aarch64/memchr.S @@ -50,6 +50,8 @@ */ ENTRY (memchr) + PTR_ARG (0) + SIZE_ARG (2) /* Do not dereference srcin if no bytes to compare. */ cbz cntin, L(zero_length) /* diff --git a/newlib/libc/machine/aarch64/memcmp.S b/newlib/libc/machine/aarch64/memcmp.S index 2a9c446bb..18874d321 100644 --- a/newlib/libc/machine/aarch64/memcmp.S +++ b/newlib/libc/machine/aarch64/memcmp.S @@ -34,6 +34,10 @@ ENTRY (memcmp) + PTR_ARG (0) + PTR_ARG (1) + SIZE_ARG (2) + cmp limit, 16 b.lo L(less16) ldp data1, data3, [src1] diff --git a/newlib/libc/machine/aarch64/memcpy.S b/newlib/libc/machine/aarch64/memcpy.S index 252d2452a..248e7843a 100644 --- a/newlib/libc/machine/aarch64/memcpy.S +++ b/newlib/libc/machine/aarch64/memcpy.S @@ -58,6 +58,9 @@ ENTRY_ALIAS (memmove) ENTRY (memcpy) + PTR_ARG (0) + PTR_ARG (1) + SIZE_ARG (2) add srcend, src, count add dstend, dstin, count cmp count, 128 diff --git a/newlib/libc/machine/aarch64/memrchr.S b/newlib/libc/machine/aarch64/memrchr.S index 2525cf190..ba9915cc3 100644 --- a/newlib/libc/machine/aarch64/memrchr.S +++ b/newlib/libc/machine/aarch64/memrchr.S @@ -45,6 +45,7 @@ exactly which byte matched. */ ENTRY (memrchr) + PTR_ARG (0) add end, srcin, cntin sub endm1, end, 1 bic src, endm1, 15 diff --git a/newlib/libc/machine/aarch64/memset.S b/newlib/libc/machine/aarch64/memset.S index 5bf4851f3..ca76439a9 100644 --- a/newlib/libc/machine/aarch64/memset.S +++ b/newlib/libc/machine/aarch64/memset.S @@ -25,6 +25,9 @@ #define zva_val x5 ENTRY (memset) + PTR_ARG (0) + SIZE_ARG (2) + dup v0.16B, valw add dstend, dstin, count diff --git a/newlib/libc/machine/aarch64/strchr.S b/newlib/libc/machine/aarch64/strchr.S index a4e089b99..500d9aff2 100644 --- a/newlib/libc/machine/aarch64/strchr.S +++ b/newlib/libc/machine/aarch64/strchr.S @@ -54,6 +54,7 @@ /* Locals and temporaries. */ ENTRY (strchr) + PTR_ARG (0) /* Magic constant 0xc0300c03 to allow us to identify which lane matches the requested byte. Even bits are set if the character matches, odd bits if either the char is NUL or matches. */ diff --git a/newlib/libc/machine/aarch64/strchrnul.S b/newlib/libc/machine/aarch64/strchrnul.S index 4d6093be7..ceaf4dca1 100644 --- a/newlib/libc/machine/aarch64/strchrnul.S +++ b/newlib/libc/machine/aarch64/strchrnul.S @@ -50,6 +50,7 @@ /* Locals and temporaries. */ ENTRY (strchrnul) + PTR_ARG (0) /* Magic constant 0x40100401 to allow us to identify which lane matches the termination condition. */ mov wtmp2, #0x0401 diff --git a/newlib/libc/machine/aarch64/strcmp.S b/newlib/libc/machine/aarch64/strcmp.S index 1d85da432..691a1760e 100644 --- a/newlib/libc/machine/aarch64/strcmp.S +++ b/newlib/libc/machine/aarch64/strcmp.S @@ -54,6 +54,8 @@ ENTRY (strcmp) + PTR_ARG (0) + PTR_ARG (1) sub off2, src2, src1 mov zeroones, REP8_01 and tmp, src1, 7 diff --git a/newlib/libc/machine/aarch64/strcpy.S b/newlib/libc/machine/aarch64/strcpy.S index 1f5f70792..57c46f390 100644 --- a/newlib/libc/machine/aarch64/strcpy.S +++ b/newlib/libc/machine/aarch64/strcpy.S @@ -55,6 +55,8 @@ exactly which byte matched. */ ENTRY (STRCPY) + PTR_ARG (0) + PTR_ARG (1) bic src, srcin, 15 ld1 {vdata.16b}, [src] cmeq vhas_nul.16b, vdata.16b, 0 diff --git a/newlib/libc/machine/aarch64/strlen.S b/newlib/libc/machine/aarch64/strlen.S index a3345a3ab..68a6f357c 100644 --- a/newlib/libc/machine/aarch64/strlen.S +++ b/newlib/libc/machine/aarch64/strlen.S @@ -78,6 +78,7 @@ character, return the length, if not, continue in the main loop. */ ENTRY (strlen) + PTR_ARG (0) and tmp1, srcin, MIN_PAGE_SIZE - 1 cmp tmp1, MIN_PAGE_SIZE - 32 b.hi L(page_cross) diff --git a/newlib/libc/machine/aarch64/strncmp.S b/newlib/libc/machine/aarch64/strncmp.S index 6b1994ef5..373695503 100644 --- a/newlib/libc/machine/aarch64/strncmp.S +++ b/newlib/libc/machine/aarch64/strncmp.S @@ -58,6 +58,9 @@ #endif ENTRY (strncmp) + PTR_ARG (0) + PTR_ARG (1) + SIZE_ARG (2) cbz limit, L(ret0) eor tmp1, src1, src2 mov zeroones, #REP8_01 diff --git a/newlib/libc/machine/aarch64/strnlen.S b/newlib/libc/machine/aarch64/strnlen.S index dc9fcb2fd..091002e0b 100644 --- a/newlib/libc/machine/aarch64/strnlen.S +++ b/newlib/libc/machine/aarch64/strnlen.S @@ -39,6 +39,8 @@ identifies the first zero byte. */ ENTRY (strnlen) + PTR_ARG (0) + SIZE_ARG (1) bic src, srcin, 15 cbz cntin, L(nomatch) ld1 {vdata.16b}, [src] diff --git a/newlib/libc/machine/aarch64/strrchr.S b/newlib/libc/machine/aarch64/strrchr.S index 67013e39d..b0574228b 100644 --- a/newlib/libc/machine/aarch64/strrchr.S +++ b/newlib/libc/machine/aarch64/strrchr.S @@ -58,6 +58,7 @@ identify exactly which byte is causing the termination, and why. */ ENTRY (strrchr) + PTR_ARG (0) /* Magic constant 0x40100401 to allow us to identify which lane matches the requested byte. Magic constant 0x80200802 used similarly for NUL termination. */