From 909c31fdd4c16252d82800ef89a2d5471621ed41 Mon Sep 17 00:00:00 2001
From: "C.S.M" <caosenmiao@espressif.com>
Date: Thu, 4 Dec 2025 14:43:10 +0800
Subject: [PATCH] fix(esp32s31): make picolic default libc on esp32s31

---
 components/esp_rom/esp32s31/ld/esp32s31.rom.libc.ld | 13 -------------
 .../esp_rom/esp32s31/ld/esp32s31.rom.newlib.ld      | 13 +++++++++++++
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/components/esp_rom/esp32s31/ld/esp32s31.rom.libc.ld b/components/esp_rom/esp32s31/ld/esp32s31.rom.libc.ld
index b5a5896135..1e761496da 100644
--- a/components/esp_rom/esp32s31/ld/esp32s31.rom.libc.ld
+++ b/components/esp_rom/esp32s31/ld/esp32s31.rom.libc.ld
@@ -31,41 +31,28 @@ strlen = 0x2f8004d8;
 strstr = 0x2f8004dc;
 bzero = 0x2f8004e0;
 sbrk = 0x2f8004e4;
-isalnum = 0x2f8004e8;
-isalpha = 0x2f8004ec;
 isascii = 0x2f8004f0;
 isblank = 0x2f8004f4;
 iscntrl = 0x2f8004f8;
-isdigit = 0x2f8004fc;
-islower = 0x2f800500;
 isgraph = 0x2f800504;
 isprint = 0x2f800508;
 ispunct = 0x2f80050c;
-isspace = 0x2f800510;
-isupper = 0x2f800514;
-toupper = 0x2f800518;
-tolower = 0x2f80051c;
 toascii = 0x2f800520;
 memccpy = 0x2f800524;
 memchr = 0x2f800528;
 memrchr = 0x2f80052c;
-strcasecmp = 0x2f800530;
 strcasestr = 0x2f800534;
 strcat = 0x2f800538;
 strchr = 0x2f80053c;
 strcspn = 0x2f800540;
-strcoll = 0x2f800544;
 strlcat = 0x2f800548;
 strlcpy = 0x2f80054c;
-strlwr = 0x2f800550;
-strncasecmp = 0x2f800554;
 strncat = 0x2f800558;
 strnlen = 0x2f80055c;
 strrchr = 0x2f800560;
 strsep = 0x2f800564;
 strspn = 0x2f800568;
 strtok_r = 0x2f80056c;
-strupr = 0x2f800570;
 longjmp = 0x2f800574;
 setjmp = 0x2f800578;
 abs = 0x2f80057c;
diff --git a/components/esp_rom/esp32s31/ld/esp32s31.rom.newlib.ld b/components/esp_rom/esp32s31/ld/esp32s31.rom.newlib.ld
index 84ce908da3..8770fc5e2e 100644
--- a/components/esp_rom/esp32s31/ld/esp32s31.rom.newlib.ld
+++ b/components/esp_rom/esp32s31/ld/esp32s31.rom.newlib.ld
@@ -37,3 +37,16 @@ __swhatbuf_r = 0x2f8004a4;
 __swbuf_r = 0x2f8004a8;
 __swbuf = 0x2f8004ac;
 __swsetup_r = 0x2f8004b0;
+toupper = 0x2f800518;
+tolower = 0x2f80051c;
+isalnum = 0x2f8004e8;
+isalpha = 0x2f8004ec;
+isdigit = 0x2f8004fc;
+islower = 0x2f800500;
+isspace = 0x2f800510;
+isupper = 0x2f800514;
+strcasecmp = 0x2f800530;
+strcoll = 0x2f800544;
+strlwr = 0x2f800550;
+strncasecmp = 0x2f800554;
+strupr = 0x2f800570;