feat(newlib): add test for newlib_nano with esp32-psram

components/esp_rom/patches/esp_rom_longjmp.S

@@ -33,10 +33,13 @@
 
 /* void longjmp (jmp_buf env, int val) */
 
-    .align  4
     .literal_position
+#if CONFIG_SPIRAM_CACHE_LIBJMP_IN_IRAM
+    .section .iram1,"ax"
+#endif
     .global __wrap_longjmp
     .type   __wrap_longjmp, @function
+    .align  4
 __wrap_longjmp:
     entry   sp, 16
 
@@ -63,7 +66,7 @@ __wrap_longjmp:
     /*
         If not on S3, replacement of only the first instructions,
         then jump back to original longjmp implementation.
-        The jump target is the instrucion
+        The jump target is the instruction
     	    l32i	a0, a2, 64
         of the original code. Hence, the original code's entry instruction and windowstart modification are left
         out.

components/newlib/CMakeLists.txt

@@ -74,6 +74,7 @@ list(APPEND ldfragments "src/newlib.lf" "src/system_libs.lf")
 
 if(CONFIG_LIBC_NEWLIB)
     list(APPEND ldfragments src/libc.lf)
+    list(APPEND ldfragments src/libm.lf)
 else()
     list(APPEND ldfragments src/picolibc/libc.lf)
 endif()

components/newlib/src/libc.lf

@@ -35,8 +35,8 @@ entries:
         libc_a-labs (noflash)
         libc_a-ldiv (noflash)
         libc_a-quorem (noflash)
-        libc_a-s_fpclassify (noflash)
+        libm_a-s_fpclassify (noflash)
-        libc_a-sf_nan (noflash)
+        libm_a-sf_nan (noflash)
 
     if SPIRAM_CACHE_LIBNUMPARSER_IN_IRAM = y:
         libc_a-utoa (noflash)
@@ -47,6 +47,7 @@ entries:
 
     if SPIRAM_CACHE_LIBIO_IN_IRAM = y:
         libc_a-wcrtomb (noflash)
+        libc_a-fwrite (noflash)
         libc_a-fvwrite (noflash)
         libc_a-wbuf (noflash)
         libc_a-wsetup (noflash)
@@ -144,9 +145,9 @@ entries:
         libc_a-getenv_r (noflash)
 
     if SPIRAM_CACHE_LIBFILE_IN_IRAM = y:
-        lock (noflash)
+        libc_a-lock (noflash)
-        isatty (noflash)
+        libc_a-isatty (noflash)
-        creat (noflash)
+        libc_a-creat (noflash)
         libc_a-fclose (noflash)
         libc_a-open (noflash)
         libc_a-close (noflash)

components/newlib/src/libm.lf

@@ -0,0 +1,10 @@
+[mapping:libm]
+archive:
+  if LIBC_NEWLIB_NANO_FORMAT = y:
+    libm_nano.a
+  else:
+    libm.a
+entries:
+    if SPIRAM_CACHE_LIBMATH_IN_IRAM = y:
+        libm_a-s_fpclassify (noflash)
+        libm_a-sf_nan (noflash)

components/newlib/src/syscalls.c

@@ -11,6 +11,7 @@
 #include <errno.h>
 #include <sys/time.h>
 #include <sys/stat.h>
+#include "esp_attr.h"
 
 #if CONFIG_IDF_TOOLCHAIN_GCC
 #include <sys/statvfs.h>
@@ -121,11 +122,17 @@ int fstat(int fd, struct stat *st)
     return _fstat_r(__getreent(), fd, st);
 }
 
+#if CONFIG_SPIRAM_CACHE_LIBMISC_IN_IRAM
+IRAM_ATTR
+#endif
 int raise(int sig)
 {
     return _raise_r(__getreent(), sig);
 }
 
+#if CONFIG_SPIRAM_CACHE_LIBMISC_IN_IRAM
+IRAM_ATTR
+#endif
 int system(const char* str)
 {
     return _system_r(__getreent(), str);

components/newlib/test_apps/newlib/main/test_newlib.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -12,6 +12,9 @@
 #include <time.h>
 #include <signal.h>
 #include <sys/time.h>
+#include <wchar.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include "unity.h"
 #include "sdkconfig.h"
 #include "soc/soc.h"
@@ -194,6 +197,112 @@ TEST_CASE("test 64bit int formats", "[newlib]")
     TEST_ASSERT_EQUAL(val, sval);
 }
 #else // CONFIG_NEWLIB_NANO_FORMAT
+
+#if CONFIG_SPIRAM_CACHE_WORKAROUND
+static bool fn_in_iram(void *fn)
+{
+    const uintptr_t fnaddr = (int)fn;
+    return (fnaddr >= SOC_IRAM_LOW && fnaddr < SOC_IRAM_HIGH);
+}
+
+TEST_CASE("Libc_nano in IRAM", "[newlib_nano]")
+{
+    TEST_ASSERT_TRUE(fn_in_iram(itoa));
+    TEST_ASSERT_TRUE(fn_in_iram(memcmp));
+    TEST_ASSERT_TRUE(fn_in_iram(memcpy));
+    TEST_ASSERT_TRUE(fn_in_iram(memset));
+    TEST_ASSERT_TRUE(fn_in_iram(strcat));
+    TEST_ASSERT_TRUE(fn_in_iram(strcmp));
+    TEST_ASSERT_TRUE(fn_in_iram(strlen));
+    TEST_ASSERT_TRUE(fn_in_iram(longjmp));
+    TEST_ASSERT_TRUE(fn_in_iram(abs));
+    TEST_ASSERT_TRUE(fn_in_iram(div));
+    TEST_ASSERT_TRUE(fn_in_iram(labs));
+    TEST_ASSERT_TRUE(fn_in_iram(ldiv));
+    TEST_ASSERT_TRUE(fn_in_iram(__fpclassifyd));
+    TEST_ASSERT_TRUE(fn_in_iram(nanf));
+    TEST_ASSERT_TRUE(fn_in_iram(utoa));
+    TEST_ASSERT_TRUE(fn_in_iram(atoi));
+    TEST_ASSERT_TRUE(fn_in_iram(atol));
+    TEST_ASSERT_TRUE(fn_in_iram(strtol));
+    TEST_ASSERT_TRUE(fn_in_iram(strtoul));
+    TEST_ASSERT_TRUE(fn_in_iram(wcrtomb));
+    TEST_ASSERT_TRUE(fn_in_iram(_fwrite_r));
+    TEST_ASSERT_TRUE(fn_in_iram(__swbuf_r));
+    TEST_ASSERT_TRUE(fn_in_iram(fputwc));
+    TEST_ASSERT_TRUE(fn_in_iram(_wctomb_r));
+    TEST_ASSERT_TRUE(fn_in_iram(ungetc));
+    TEST_ASSERT_TRUE(fn_in_iram(fflush));
+    TEST_ASSERT_TRUE(fn_in_iram(asctime));
+    TEST_ASSERT_TRUE(fn_in_iram(asctime_r));
+    TEST_ASSERT_TRUE(fn_in_iram(ctime));
+    TEST_ASSERT_TRUE(fn_in_iram(ctime_r));
+    TEST_ASSERT_TRUE(fn_in_iram(localtime));
+    TEST_ASSERT_TRUE(fn_in_iram(gmtime));
+    TEST_ASSERT_TRUE(fn_in_iram(gmtime_r));
+    TEST_ASSERT_TRUE(fn_in_iram(strftime));
+    TEST_ASSERT_TRUE(fn_in_iram(mktime));
+    TEST_ASSERT_TRUE(fn_in_iram(_tzset_r));
+    TEST_ASSERT_TRUE(fn_in_iram(time));
+    TEST_ASSERT_TRUE(fn_in_iram(strptime));
+    TEST_ASSERT_TRUE(fn_in_iram(toupper));
+    TEST_ASSERT_TRUE(fn_in_iram(tolower));
+    TEST_ASSERT_TRUE(fn_in_iram(toascii));
+    TEST_ASSERT_TRUE(fn_in_iram(strupr));
+    TEST_ASSERT_TRUE(fn_in_iram(bzero));
+    TEST_ASSERT_TRUE(fn_in_iram(isalnum));
+    TEST_ASSERT_TRUE(fn_in_iram(isalpha));
+    TEST_ASSERT_TRUE(fn_in_iram(isascii));
+    TEST_ASSERT_TRUE(fn_in_iram(isblank));
+    TEST_ASSERT_TRUE(fn_in_iram(iscntrl));
+    TEST_ASSERT_TRUE(fn_in_iram(isdigit));
+    TEST_ASSERT_TRUE(fn_in_iram(isgraph));
+    TEST_ASSERT_TRUE(fn_in_iram(islower));
+    TEST_ASSERT_TRUE(fn_in_iram(isprint));
+    TEST_ASSERT_TRUE(fn_in_iram(ispunct));
+    TEST_ASSERT_TRUE(fn_in_iram(isspace));
+    TEST_ASSERT_TRUE(fn_in_iram(isupper));
+    TEST_ASSERT_TRUE(fn_in_iram(memccpy));
+    TEST_ASSERT_TRUE(fn_in_iram(memchr));
+    TEST_ASSERT_TRUE(fn_in_iram(memmove));
+    TEST_ASSERT_TRUE(fn_in_iram(memrchr));
+    TEST_ASSERT_TRUE(fn_in_iram(strcasecmp));
+    TEST_ASSERT_TRUE(fn_in_iram(strcasestr));
+    TEST_ASSERT_TRUE(fn_in_iram(strchr));
+    TEST_ASSERT_TRUE(fn_in_iram(strcoll));
+    TEST_ASSERT_TRUE(fn_in_iram(strcpy));
+    TEST_ASSERT_TRUE(fn_in_iram(strcspn));
+    TEST_ASSERT_TRUE(fn_in_iram(strdup));
+    TEST_ASSERT_TRUE(fn_in_iram(_strdup_r));
+    TEST_ASSERT_TRUE(fn_in_iram(strlcat));
+    TEST_ASSERT_TRUE(fn_in_iram(strlcpy));
+    TEST_ASSERT_TRUE(fn_in_iram(strlwr));
+    TEST_ASSERT_TRUE(fn_in_iram(strncasecmp));
+    TEST_ASSERT_TRUE(fn_in_iram(strncat));
+    TEST_ASSERT_TRUE(fn_in_iram(strncmp));
+    TEST_ASSERT_TRUE(fn_in_iram(strncpy));
+    TEST_ASSERT_TRUE(fn_in_iram(strndup));
+    TEST_ASSERT_TRUE(fn_in_iram(_strndup_r));
+    TEST_ASSERT_TRUE(fn_in_iram(strnlen));
+    TEST_ASSERT_TRUE(fn_in_iram(strrchr));
+    TEST_ASSERT_TRUE(fn_in_iram(strsep));
+    TEST_ASSERT_TRUE(fn_in_iram(strspn));
+    TEST_ASSERT_TRUE(fn_in_iram(strstr));
+    TEST_ASSERT_TRUE(fn_in_iram(strtok_r));
+    TEST_ASSERT_TRUE(fn_in_iram(strupr));
+    TEST_ASSERT_TRUE(fn_in_iram(srand));
+    TEST_ASSERT_TRUE(fn_in_iram(rand));
+    TEST_ASSERT_TRUE(fn_in_iram(rand_r));
+    TEST_ASSERT_TRUE(fn_in_iram(_getenv_r));
+    TEST_ASSERT_TRUE(fn_in_iram(isatty));
+    TEST_ASSERT_TRUE(fn_in_iram(fclose));
+    TEST_ASSERT_TRUE(fn_in_iram(creat));
+    TEST_ASSERT_TRUE(fn_in_iram(_fwalk_sglue));
+    TEST_ASSERT_TRUE(fn_in_iram(__sinit));
+    TEST_ASSERT_TRUE(fn_in_iram(raise));
+    TEST_ASSERT_TRUE(fn_in_iram(system));
+}
+#endif // SPIRAM_CACHE_WORKAROUND
 TEST_CASE("test 64bit int formats", "[newlib]")
 {
     char* res = NULL;

components/newlib/test_apps/newlib/sdkconfig.ci.nano_psram_esp32

@@ -0,0 +1,16 @@
+CONFIG_IDF_TARGET="esp32"
+CONFIG_LIBC_NEWLIB_NANO_FORMAT=y
+CONFIG_SPIRAM=y
+CONFIG_SPIRAM_CACHE_WORKAROUND=y
+CONFIG_SPIRAM_CACHE_LIBJMP_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBMATH_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBNUMPARSER_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBIO_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBTIME_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBCHAR_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBMEM_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBSTR_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBRAND_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBENV_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBFILE_IN_IRAM=y
+CONFIG_SPIRAM_CACHE_LIBMISC_IN_IRAM=y

tools/ci/check_copyright_ignore.txt

@@ -445,6 +445,7 @@ components/esp_rom/include/esp_rom_crc.h
 components/esp_rom/linux/esp_rom_crc.c
 components/esp_rom/linux/esp_rom_md5.c
 components/esp_rom/patches/esp_rom_crc.c
+components/esp_rom/patches/esp_rom_longjmp.S
 components/esp_system/ubsan.c
 components/esp_wifi/src/mesh_event.c
 components/fatfs/diskio/diskio.c

tools/ci/check_ldgen_mapping_exceptions.txt

@@ -1,4 +1,5 @@
 libc
+libm
 sha256_coredump
 gcc
 clang_rt_builtins