newlib: add "full" formatting support, add missing functions

- add two versions of libc: libc.a and libc_nano.a. First one has full C99 formatting support, second one uses “nano” formatting functions available in ROM.
- fix linker error for fmod, fmodf, atof, atoff
- update tests

components/esp32/Kconfig

@@ -138,6 +138,27 @@ config NEWLIB_STDOUT_ADDCR
         is usually done by an added CR character. Enabling this will make the
         standard output code automatically add a CR character before a LF.
 
+config NEWLIB_NANO_FORMAT
+    bool "Enable 'nano' formatting options for printf/scanf family"
+    default n
+    help
+        ESP32 ROM contains parts of newlib C library, including printf/scanf family
+        of functions. These functions have been compiled with so-called "nano"
+        formatting option. This option doesn't support 64-bit integer formats and C99
+        features, such as positional arguments. 
+
+        For more details about "nano" formatting option, please see newlib readme file,
+        search for '--enable-newlib-nano-formatted-io':
+        https://sourceware.org/newlib/README
+
+        If this option is enabled, build system will use functions available in
+        ROM, reducing the application binary size. Functions available in ROM run
+        faster than functions which run from flash. Functions available in ROM can
+        also run when flash instruction cache is disabled.
+
+        If you need 64-bit integer formatting support or C99 features, keep this
+        option disabled.
+
 choice CONSOLE_UART
     prompt "UART for console output"
     default CONSOLE_UART_DEFAULT

components/esp32/component.mk

@@ -8,6 +8,10 @@ LIBS := core net80211 phy rtc pp wpa smartconfig coexist wps wpa2
 
 LINKER_SCRIPTS += -T esp32_out.ld -T esp32.common.ld -T esp32.rom.ld -T esp32.peripherals.ld
 
+ifeq ("$(CONFIG_NEWLIB_NANO_FORMAT)","y")
+LINKER_SCRIPTS += -T esp32.rom.nanofmt.ld
+endif
+
 COMPONENT_ADD_LDFLAGS := -lesp32 \
                            $(COMPONENT_PATH)/libhal.a \
                            -L$(COMPONENT_PATH)/lib \

components/esp32/ld/esp32.rom.ld

@@ -26,14 +26,6 @@ PROVIDE ( asctime = 0x40059588 );
 PROVIDE ( asctime_r = 0x40000ec8 );
 PROVIDE ( __ashldi3 = 0x4000c818 );
 PROVIDE ( __ashrdi3 = 0x4000c830 );
-PROVIDE ( asiprintf = 0x40056d9c );
-PROVIDE ( _asiprintf_r = 0x40056d4c );
-PROVIDE ( asniprintf = 0x40056cd8 );
-PROVIDE ( _asniprintf_r = 0x40056c64 );
-PROVIDE ( asnprintf = 0x40056cd8 );
-PROVIDE ( _asnprintf_r = 0x40056c64 );
-PROVIDE ( asprintf = 0x40056d9c );
-PROVIDE ( _asprintf_r = 0x40056d4c );
 PROVIDE ( atoi = 0x400566c4 );
 PROVIDE ( _atoi_r = 0x400566d4 );
 PROVIDE ( atol = 0x400566ec );
@@ -230,10 +222,6 @@ PROVIDE ( __ffssi2 = 0x4000c804 );
 PROVIDE ( FilePacketSendDeflatedReqMsgProc = 0x40008b24 );
 PROVIDE ( FilePacketSendReqMsgProc = 0x40008860 );
 PROVIDE ( _findenv_r = 0x40001f44 );
-PROVIDE ( fiprintf = 0x40056efc );
-PROVIDE ( _fiprintf_r = 0x40056ed8 );
-PROVIDE ( fiscanf = 0x40058884 );
-PROVIDE ( _fiscanf_r = 0x400588b4 );
 PROVIDE ( __fixdfdi = 0x40002ac4 );
 PROVIDE ( __fixdfsi = 0x40002a78 );
 PROVIDE ( __fixsfdi = 0x4000244c );
@@ -255,16 +243,12 @@ PROVIDE ( __floatundisf = 0x4000c8b0 );
 PROVIDE ( __floatunsidf = 0x4000c938 );
 PROVIDE ( __floatunsisf = 0x4000c864 );
 PROVIDE ( __fp_lock_all = 0x40001f1c );
-PROVIDE ( fprintf = 0x40056efc );
-PROVIDE ( _fprintf_r = 0x40056ed8 );
 PROVIDE ( __fp_unlock_all = 0x40001f30 );
 PROVIDE ( fputwc = 0x40058ea8 );
 PROVIDE ( __fputwc = 0x40058da0 );
 PROVIDE ( _fputwc_r = 0x40058e4c );
 PROVIDE ( free = 0x4000beb8 );
 PROVIDE ( _free_r = 0x4000bbcc );
-PROVIDE ( fscanf = 0x40058884 );
-PROVIDE ( _fscanf_r = 0x400588b4 );
 PROVIDE ( _fstat_r = 0x4000bccc );
 PROVIDE ( _fwalk = 0x4000c738 );
 PROVIDE ( _fwalk_reent = 0x4000c770 );
@@ -337,15 +321,11 @@ PROVIDE ( hmac_sha1_vector = 0x400609e4 );
 PROVIDE ( hmac_sha256 = 0x40060d58 );
 PROVIDE ( hmac_sha256_vector = 0x40060c84 );
 PROVIDE ( intr_matrix_set = 0x4000681c );
-PROVIDE ( iprintf = 0x40056978 );
-PROVIDE ( _iprintf_r = 0x40056944 );
 PROVIDE ( isalnum = 0x40000f04 );
 PROVIDE ( isalpha = 0x40000f18 );
 PROVIDE ( isascii = 0x4000c20c );
 PROVIDE ( _isatty_r = 0x40000ea0 );
 PROVIDE ( isblank = 0x40000f2c );
-PROVIDE ( iscanf = 0x40058760 );
-PROVIDE ( _iscanf_r = 0x4005879c );
 PROVIDE ( iscntrl = 0x40000f50 );
 PROVIDE ( isdigit = 0x40000f64 );
 PROVIDE ( isgraph = 0x40000f94 );
@@ -511,11 +491,6 @@ PROVIDE ( __powidf2 = 0x400638d4 );
 PROVIDE ( __powisf2 = 0x4006389c );
 PROVIDE ( _Pri_4_HandlerAddress = 0x3ffe0648 );
 PROVIDE ( _Pri_5_HandlerAddress = 0x3ffe064c );
-PROVIDE ( printf = 0x40056978 );
-PROVIDE ( _printf_common = 0x40057338 );
-PROVIDE ( _printf_float = 0x4000befc );
-PROVIDE ( _printf_i = 0x40057404 );
-PROVIDE ( _printf_r = 0x40056944 );
 PROVIDE ( qsort = 0x40056424 );
 PROVIDE ( _raise_r = 0x4000bc70 );
 PROVIDE ( rand = 0x40001058 );
@@ -1500,11 +1475,6 @@ PROVIDE ( rwip_rf_p_get = 0x400558f4 );
 PROVIDE ( r_XorKey = 0x400112c0 );
 PROVIDE ( sbrk = 0x400017f4 );
 PROVIDE ( _sbrk_r = 0x4000bce4 );
-PROVIDE ( scanf = 0x40058760 );
-PROVIDE ( _scanf_chars = 0x40058384 );
-PROVIDE ( _scanf_float = 0x4000bf18 );
-PROVIDE ( _scanf_i = 0x4005845c );
-PROVIDE ( _scanf_r = 0x4005879c );
 PROVIDE ( __sccl = 0x4000c498 );
 PROVIDE ( __sclose = 0x400011b8 );
 PROVIDE ( SelectSpiFunction = 0x40061f84 );
@@ -1549,13 +1519,9 @@ PROVIDE ( sip_is_active = 0x4000b3c0 );
 PROVIDE ( sip_post_init = 0x4000aed8 );
 PROVIDE ( sip_reclaim_from_host_cmd = 0x4000adbc );
 PROVIDE ( sip_reclaim_tx_data_pkt = 0x4000ad5c );
-PROVIDE ( siprintf = 0x40056c08 );
-PROVIDE ( _siprintf_r = 0x40056bbc );
 PROVIDE ( sip_send = 0x4000af54 );
 PROVIDE ( sip_to_host_chain_append = 0x4000aef8 );
 PROVIDE ( sip_to_host_evt_send_done = 0x4000ac04 );
-PROVIDE ( siscanf = 0x400587d0 );
-PROVIDE ( _siscanf_r = 0x40058830 );
 PROVIDE ( slc_add_credits = 0x4000baf4 );
 PROVIDE ( slc_enable = 0x4000b64c );
 PROVIDE ( slc_from_host_chain_fetch = 0x4000b7e8 );
@@ -1568,10 +1534,6 @@ PROVIDE ( slc_send_to_host_chain = 0x4000b6a0 );
 PROVIDE ( slc_set_host_io_max_window = 0x4000b89c );
 PROVIDE ( slc_to_host_chain_recycle = 0x4000b758 );
 PROVIDE ( __smakebuf_r = 0x40059108 );
-PROVIDE ( sniprintf = 0x40056b4c );
-PROVIDE ( _sniprintf_r = 0x40056ae4 );
-PROVIDE ( snprintf = 0x40056b4c );
-PROVIDE ( _snprintf_r = 0x40056ae4 );
 PROVIDE ( software_reset = 0x4000824c );
 PROVIDE ( software_reset_cpu = 0x40008264 );
 PROVIDE ( specialModP256 = 0x4001600c );
@@ -1607,20 +1569,13 @@ PROVIDE ( SPI_Write_Encrypt_Disable = 0x40062e60 );
 PROVIDE ( SPI_Write_Encrypt_Enable = 0x40062df4 );
 /* This is static function, but can be used, not generated by script*/
 PROVIDE ( SPI_write_status = 0x400622f0 );
-PROVIDE ( sprintf = 0x40056c08 );
-PROVIDE ( _sprintf_r = 0x40056bbc );
-PROVIDE ( __sprint_r = 0x400577e4 );
 PROVIDE ( srand = 0x40001004 );
 PROVIDE ( __sread = 0x40001118 );
 PROVIDE ( __srefill_r = 0x400593d4 );
-PROVIDE ( sscanf = 0x400587d0 );
-PROVIDE ( _sscanf_r = 0x40058830 );
 PROVIDE ( __sseek = 0x40001184 );
 PROVIDE ( __ssprint_r = 0x40056ff8 );
 PROVIDE ( __ssputs_r = 0x40056f2c );
 PROVIDE ( __ssrefill_r = 0x40057fec );
-PROVIDE ( __ssvfiscanf_r = 0x4005802c );
-PROVIDE ( __ssvfscanf_r = 0x4005802c );
 PROVIDE ( __stack = 0x3ffe3f20 );
 PROVIDE ( __stack_app = 0x3ffe7e30 );
 PROVIDE ( _stack_sentry = 0x3ffe1320 );
@@ -1673,11 +1628,6 @@ PROVIDE ( SubtractFromSelfBigHexSign256 = 0x40015dc8 );
 PROVIDE ( __subvdi3 = 0x40002d20 );
 PROVIDE ( __subvsi3 = 0x40002cf8 );
 PROVIDE ( _sungetc_r = 0x40057f6c );
-PROVIDE ( _svfiprintf_r = 0x40057100 );
-PROVIDE ( __svfiscanf_r = 0x40057b08 );
-PROVIDE ( _svfprintf_r = 0x40057100 );
-PROVIDE ( __svfscanf = 0x40057f04 );
-PROVIDE ( __svfscanf_r = 0x40057b08 );
 PROVIDE ( __swbuf = 0x40058cb4 );
 PROVIDE ( __swbuf_r = 0x40058bec );
 PROVIDE ( __swrite = 0x40001150 );
@@ -1756,44 +1706,8 @@ PROVIDE ( user_code_start = 0x3ffe0400 );
 PROVIDE ( _UserExceptionVector = 0x40000340 );
 PROVIDE ( utoa = 0x40056258 );
 PROVIDE ( __utoa = 0x400561f0 );
-PROVIDE ( vasiprintf = 0x40056eb8 );
-PROVIDE ( _vasiprintf_r = 0x40056e80 );
-PROVIDE ( vasniprintf = 0x40056e58 );
-PROVIDE ( _vasniprintf_r = 0x40056df8 );
-PROVIDE ( vasnprintf = 0x40056e58 );
-PROVIDE ( _vasnprintf_r = 0x40056df8 );
-PROVIDE ( vasprintf = 0x40056eb8 );
-PROVIDE ( _vasprintf_r = 0x40056e80 );
 PROVIDE ( VerifyFlashMd5Proc = 0x40008c44 );
 PROVIDE ( veryBigHexP256 = 0x3ff9736c );
-PROVIDE ( vfiprintf = 0x40057ae8 );
-PROVIDE ( _vfiprintf_r = 0x40057850 );
-PROVIDE ( vfiscanf = 0x40057eb8 );
-PROVIDE ( _vfiscanf_r = 0x40057f24 );
-PROVIDE ( vfprintf = 0x40057ae8 );
-PROVIDE ( _vfprintf_r = 0x40057850 );
-PROVIDE ( vfscanf = 0x40057eb8 );
-PROVIDE ( _vfscanf_r = 0x40057f24 );
-PROVIDE ( viprintf = 0x400569b4 );
-PROVIDE ( _viprintf_r = 0x400569e4 );
-PROVIDE ( viscanf = 0x40058698 );
-PROVIDE ( _viscanf_r = 0x400586c8 );
-PROVIDE ( vprintf = 0x400569b4 );
-PROVIDE ( _vprintf_r = 0x400569e4 );
-PROVIDE ( vscanf = 0x40058698 );
-PROVIDE ( _vscanf_r = 0x400586c8 );
-PROVIDE ( vsiprintf = 0x40056ac4 );
-PROVIDE ( _vsiprintf_r = 0x40056a90 );
-PROVIDE ( vsiscanf = 0x40058740 );
-PROVIDE ( _vsiscanf_r = 0x400586f8 );
-PROVIDE ( vsniprintf = 0x40056a68 );
-PROVIDE ( _vsniprintf_r = 0x40056a14 );
-PROVIDE ( vsnprintf = 0x40056a68 );
-PROVIDE ( _vsnprintf_r = 0x40056a14 );
-PROVIDE ( vsprintf = 0x40056ac4 );
-PROVIDE ( _vsprintf_r = 0x40056a90 );
-PROVIDE ( vsscanf = 0x40058740 );
-PROVIDE ( _vsscanf_r = 0x400586f8 );
 PROVIDE ( wcrtomb = 0x40058920 );
 PROVIDE ( _wcrtomb_r = 0x400588d8 );
 PROVIDE ( __wctomb = 0x3ff96540 );

components/esp32/ld/esp32.rom.nanofmt.ld

@@ -0,0 +1,100 @@
+/*
+	Address table for printf/scanf family of functions in ESP32 ROM.
+	These functions are compiled with newlib "nano" format option.
+	As such, they don's support 64-bit integer formats.
+	Floating point formats are supported by setting _printf_float and
+	_scanf_float entries in syscall table. This is done automatically
+	by startup code.
+
+	Generated for ROM with MD5sum:
+	ab8282ae908fe9e7a63fb2a4ac2df013  eagle.pro.rom.out
+*/
+
+PROVIDE ( asiprintf = 0x40056d9c );
+PROVIDE ( _asiprintf_r = 0x40056d4c );
+PROVIDE ( asniprintf = 0x40056cd8 );
+PROVIDE ( _asniprintf_r = 0x40056c64 );
+PROVIDE ( asnprintf = 0x40056cd8 );
+PROVIDE ( _asnprintf_r = 0x40056c64 );
+PROVIDE ( asprintf = 0x40056d9c );
+PROVIDE ( _asprintf_r = 0x40056d4c );
+PROVIDE ( fiprintf = 0x40056efc );
+PROVIDE ( _fiprintf_r = 0x40056ed8 );
+PROVIDE ( fiscanf = 0x40058884 );
+PROVIDE ( _fiscanf_r = 0x400588b4 );
+PROVIDE ( fprintf = 0x40056efc );
+PROVIDE ( _fprintf_r = 0x40056ed8 );
+PROVIDE ( iprintf = 0x40056978 );
+PROVIDE ( _iprintf_r = 0x40056944 );
+PROVIDE ( printf = 0x40056978 );
+PROVIDE ( _printf_common = 0x40057338 );
+PROVIDE ( _printf_float = 0x4000befc );
+PROVIDE ( _printf_i = 0x40057404 );
+PROVIDE ( _printf_r = 0x40056944 );
+PROVIDE ( siprintf = 0x40056c08 );
+PROVIDE ( _siprintf_r = 0x40056bbc );
+PROVIDE ( sniprintf = 0x40056b4c );
+PROVIDE ( _sniprintf_r = 0x40056ae4 );
+PROVIDE ( snprintf = 0x40056b4c );
+PROVIDE ( _snprintf_r = 0x40056ae4 );
+PROVIDE ( sprintf = 0x40056c08 );
+PROVIDE ( _sprintf_r = 0x40056bbc );
+PROVIDE ( __sprint_r = 0x400577e4 );
+PROVIDE ( _svfiprintf_r = 0x40057100 );
+PROVIDE ( __svfiscanf_r = 0x40057b08 );
+PROVIDE ( _svfprintf_r = 0x40057100 );
+PROVIDE ( __svfscanf = 0x40057f04 );
+PROVIDE ( __svfscanf_r = 0x40057b08 );
+PROVIDE ( vasiprintf = 0x40056eb8 );
+PROVIDE ( _vasiprintf_r = 0x40056e80 );
+PROVIDE ( vasniprintf = 0x40056e58 );
+PROVIDE ( _vasniprintf_r = 0x40056df8 );
+PROVIDE ( vasnprintf = 0x40056e58 );
+PROVIDE ( _vasnprintf_r = 0x40056df8 );
+PROVIDE ( vasprintf = 0x40056eb8 );
+PROVIDE ( _vasprintf_r = 0x40056e80 );
+PROVIDE ( vfiprintf = 0x40057ae8 );
+PROVIDE ( _vfiprintf_r = 0x40057850 );
+PROVIDE ( vfiscanf = 0x40057eb8 );
+PROVIDE ( _vfiscanf_r = 0x40057f24 );
+PROVIDE ( vfprintf = 0x40057ae8 );
+PROVIDE ( _vfprintf_r = 0x40057850 );
+PROVIDE ( vfscanf = 0x40057eb8 );
+PROVIDE ( _vfscanf_r = 0x40057f24 );
+PROVIDE ( viprintf = 0x400569b4 );
+PROVIDE ( _viprintf_r = 0x400569e4 );
+PROVIDE ( viscanf = 0x40058698 );
+PROVIDE ( _viscanf_r = 0x400586c8 );
+PROVIDE ( vprintf = 0x400569b4 );
+PROVIDE ( _vprintf_r = 0x400569e4 );
+PROVIDE ( vscanf = 0x40058698 );
+PROVIDE ( _vscanf_r = 0x400586c8 );
+PROVIDE ( vsiprintf = 0x40056ac4 );
+PROVIDE ( _vsiprintf_r = 0x40056a90 );
+PROVIDE ( vsiscanf = 0x40058740 );
+PROVIDE ( _vsiscanf_r = 0x400586f8 );
+PROVIDE ( vsniprintf = 0x40056a68 );
+PROVIDE ( _vsniprintf_r = 0x40056a14 );
+PROVIDE ( vsnprintf = 0x40056a68 );
+PROVIDE ( _vsnprintf_r = 0x40056a14 );
+PROVIDE ( vsprintf = 0x40056ac4 );
+PROVIDE ( _vsprintf_r = 0x40056a90 );
+PROVIDE ( vsscanf = 0x40058740 );
+PROVIDE ( _vsscanf_r = 0x400586f8 );
+PROVIDE ( fscanf = 0x40058884 );
+PROVIDE ( _fscanf_r = 0x400588b4 );
+PROVIDE ( iscanf = 0x40058760 );
+PROVIDE ( _iscanf_r = 0x4005879c );
+PROVIDE ( scanf = 0x40058760 );
+PROVIDE ( _scanf_chars = 0x40058384 );
+PROVIDE ( _scanf_float = 0x4000bf18 );
+PROVIDE ( _scanf_i = 0x4005845c );
+PROVIDE ( _scanf_r = 0x4005879c );
+PROVIDE ( siscanf = 0x400587d0 );
+PROVIDE ( _siscanf_r = 0x40058830 );
+PROVIDE ( sscanf = 0x400587d0 );
+PROVIDE ( _sscanf_r = 0x40058830 );
+PROVIDE ( __ssvfiscanf_r = 0x4005802c );
+PROVIDE ( __ssvfscanf_r = 0x4005802c );
+
+

components/newlib/component.mk

@@ -1,4 +1,10 @@
-COMPONENT_ADD_LDFLAGS := $(COMPONENT_PATH)/lib/libc.a $(COMPONENT_PATH)/lib/libm.a -lnewlib
+
+ifdef CONFIG_NEWLIB_NANO_FORMAT
+LIBC_PATH := $(COMPONENT_PATH)/lib/libc_nano.a
+else
+LIBC_PATH := $(COMPONENT_PATH)/lib/libc.a
+endif
+
+COMPONENT_ADD_LDFLAGS := $(LIBC_PATH) $(COMPONENT_PATH)/lib/libm.a -lnewlib
 
 COMPONENT_ADD_INCLUDEDIRS := include platform_include
-

components/newlib/lib/extracted/romsyms

@@ -1,639 +0,0 @@
-abort
-abs
-__adddf3
-__any_on
-app_gpio_arg
-app_gpio_handler
-__ascii_wctomb
-asctime
-asctime_r
-asiprintf
-_asiprintf_r
-asniprintf
-_asniprintf_r
-asnprintf
-_asnprintf_r
-asprintf
-_asprintf_r
-atoi
-_atoi_r
-atol
-_atol_r
-__b2d
-_Balloc
-_Bfree
-_bss_end
-_bss_start
-btdummy_bss
-btdummy_text
-bzero
-cache_flash_mmu_set
-Cache_Flush
-Cache_Read_Disable
-Cache_Read_Enable
-Cache_Read_Init
-cache_sram_mmu_set
-calloc
-_calloc_r
-check_pos
-_cleanup
-_cleanup_r
-close
-_close_r
-__copybits
-creat
-ctime
-ctime_r
-__d2b
-_data_end
-_data_start
-_daylight
-_DebugExceptionVector
-debug_timer
-debug_timerfn
-div
-__divdf3
-__divsi3
-_DoubleExceptionVector
-__dummy_lock
-__dummy_lock_try
-environ
-__env_lock
-__env_unlock
-eprintf
-eprintf_init_buf
-eprintf_to_host
-__eqdf2
-est_get_printf_buf_remain_len
-est_reset_printf_buf_len
-_etext
-ets_aes_crypt
-ets_aes_set_endian
-ets_aes_setkey_dec
-ets_aes_setkey_enc
-ets_aes_start
-ets_aes_stop
-ets_bigint_disable
-ets_bigint_enable
-ets_bigint_mod_mult_getz
-ets_bigint_mod_mult_prepare
-ets_bigint_mod_power_getz
-ets_bigint_mod_power_prepare
-ets_bigint_montgomery_mult_getz
-ets_bigint_montgomery_mult_prepare
-ets_bigint_mult_getz
-ets_bigint_mult_prepare
-ets_bigint_wait_finish
-ets_delay_us
-ets_efuse_get_8M_clock
-ets_efuse_get_spiconfig
-ets_efuse_program_op
-ets_efuse_read_op
-ets_efuse_start
-ets_efuse_stop
-ets_external_printf
-ets_get_cpu_frequency
-ets_get_detected_xtal_freq
-ets_get_xtal_scale
-ets_install_external_printf
-ets_install_putc1
-ets_install_putc2
-ets_install_uart_printf
-ets_intr_count
-ets_intr_lock
-ets_intr_unlock
-ets_isr_attach
-ets_isr_mask
-ets_isr_unmask
-ets_post
-ets_printf
-ets_readySet_
-ets_run
-ets_secure_boot_check
-ets_secure_boot_check_finish
-ets_secure_boot_check_start
-ets_secure_boot_finish
-ets_secure_boot_hash
-ets_secure_boot_obtain
-ets_secure_boot_rd_abstract
-ets_secure_boot_rd_iv
-ets_secure_boot_start
-ets_set_appcpu_boot_addr
-ets_set_idle_cb
-ets_set_startup_callback
-ets_set_user_start
-ets_sha_finish
-ets_sha_init
-ets_sha_start
-ets_sha_stop
-ets_sha_update
-ets_startup_callback
-ets_task
-ets_timer_arm
-ets_timer_arm_us
-ets_timer_disarm
-ets_timer_done
-ets_timer_handler_isr
-ets_timer_init
-ets_timer_setfn
-ets_uart_printf
-ets_unpack_flash_code
-ets_update_cpu_frequency
-ets_waiti0
-_exit_r
-fclose
-_fclose_r
-fflush
-_fflush_r
-FilePacketSendDeflatedReqMsgProc
-FilePacketSendReqMsgProc
-_findenv_r
-fiprintf
-_fiprintf_r
-fiscanf
-_fiscanf_r
-__fixdfsi
-__fixunsdfsi
-FlashDwnLdDeflatedStartMsgProc
-FlashDwnLdParamCfgMsgProc
-FlashDwnLdStartMsgProc
-FlashDwnLdStopDeflatedReqMsgProc
-FlashDwnLdStopReqMsgProc
-__floatsidf
-__floatunsidf
-__fpclassifyd
-__fp_lock_all
-fprintf
-_fprintf_r
-__fp_unlock_all
-fputwc
-__fputwc
-_fputwc_r
-free
-_free_r
-fscanf
-_fscanf_r
-_fstat_r
-_fwalk
-_fwalk_reent
-__gedf2
-_GeneralException
-__get_current_time_locale
-_getenv_r
-__gethex
-_getpid_r
-__getreent
-_gettimeofday_r
-__gettzinfo
-GetUartDevice
-_global_impure_ptr
-gmtime
-gmtime_r
-gpio_init
-gpio_input_get
-gpio_input_get_high
-gpio_intr_ack
-gpio_intr_ack_high
-gpio_intr_handler_register
-gpio_intr_pending
-gpio_intr_pending_high
-gpio_matrix_in
-gpio_matrix_out
-gpio_output_set
-gpio_output_set_high
-gpio_pad_unhold
-gpio_pending_mask
-gpio_pending_mask_high
-gpio_pin_intr_state_set
-gpio_pin_wakeup_disable
-gpio_pin_wakeup_enable
-gpio_register_get
-gpio_register_set
-__gtdf2
-gTxMsg
-__hexdig_fun
-__hexnan
-__hi0bits
-__i2b
-intr_matrix_set
-iprintf
-_iprintf_r
-isalnum
-isalpha
-isascii
-_isatty_r
-isblank
-iscanf
-_iscanf_r
-iscntrl
-isdigit
-isgraph
-islower
-isprint
-ispunct
-isspace
-isupper
-itoa
-__itoa
-_KernelExceptionVector
-_kill_r
-labs
-ldiv
-__ledf2
-_Level2FromVector
-_Level2Vector
-_Level3FromVector
-_Level3Vector
-_Level4FromVector
-_Level4Vector
-_Level5FromVector
-_Level5Vector
-_LevelOneInterrupt
-_link_r
-lldesc_build_chain
-lldesc_num2link
-lldesc_set_owner
-__lo0bits
-__locale_charset
-__locale_cjk_lang
-localeconv
-_localeconv_r
-__locale_mb_cur_max
-__locale_msgcharset
-localtime
-localtime_r
-_lock_acquire
-_lock_acquire_recursive
-_lock_close
-_lock_close_recursive
-_lock_init
-_lock_init_recursive
-_lock_release
-_lock_release_recursive
-_lock_try_acquire
-_lock_try_acquire_recursive
-longjmp
-_lseek_r
-__lshift
-__ltdf2
-main
-malloc
-_malloc_r
-__mcmp
-MD5Final
-MD5Init
-MD5Update
-md5_vector
-__mdiff
-memccpy
-memchr
-memcmp
-memcpy
-MemDwnLdStartMsgProc
-MemDwnLdStopReqMsgProc
-memmove
-MemPacketSendReqMsgProc
-memrchr
-memset
-mktime
-mmu_init
-_mprec_log10
-__muldf3
-__multadd
-__multiply
-multofup
-mz_adler32
-mz_crc32
-mz_free
-nanf
-__nedf2
-_NMIExceptionVector
-open
-_open_r
-__pow5mult
-printf
-_printf_common
-_printf_float
-_printf_i
-_printf_r
-print_rom_meminfo
-qsort
-_raise_r
-rand
-rand_r
-__ratio
-RcvMsg
-read
-_read_r
-realloc
-_realloc_r
-RecvBuff
-recv_packet
-_rename_r
-_ResetHandler
-_ResetVector
-_rom_store
-_rom_store_table
-roundup2
-rtc_boot_control
-rtc_get_reset_reason
-rtc_get_wakeup_cause
-rtc_select_apb_bridge
-__s2b
-sbrk
-_sbrk_r
-scanf
-_scanf_chars
-_scanf_float
-_scanf_i
-_scanf_r
-__sccl
-__sclose
-SelectSpiFunction
-SelectSpiQIO
-SendMsg
-send_packet
-__seofread
-setjmp
-setlocale
-_setlocale_r
-sf_dump
-__sflush_r
-__sfmoreglue
-__sfp
-__sfp_lock_acquire
-__sfp_lock_release
-__sfputs_r
-__sfvwrite_r
-__sinit
-__sinit_lock_acquire
-__sinit_lock_release
-sip_alloc_to_host_evt
-sip_get_ptr
-sip_get_state
-sip_init_attach
-sip_install_rx_ctrl_cb
-sip_install_rx_data_cb
-sip_post_init
-sip_reclaim_from_host_cmd
-sip_reclaim_tx_data_pkt
-siprintf
-_siprintf_r
-sip_send
-sip_to_host_chain_append
-sip_to_host_evt_send_done
-siscanf
-_siscanf_r
-slc_add_credits
-slc_enable
-slc_from_host_chain_fetch
-slc_from_host_chain_recycle
-slc_has_pkt_to_host
-slc_init_attach
-slc_init_credit
-slc_reattach
-slc_select_tohost_gpio
-slc_select_tohost_gpio_mode
-slc_send_to_host_chain
-slc_set_host_io_max_window
-slc_to_host_chain_recycle
-__smakebuf_r
-sniprintf
-_sniprintf_r
-snprintf
-_snprintf_r
-software_reset
-software_reset_app_cpu
-software_reset_pro_cpu
-spi_cache_sram_init
-SPIClkConfig
-SPI_Common_Command
-SPI_Encrypt_Write
-SPIEraseArea
-SPIEraseBlock
-SPIEraseChip
-SPIEraseSector
-spi_flash_attach
-SPILock
-SPIMasterReadModeCnfig
-SPIParamCfg
-SPI_Prepare_Encrypt_Data
-SPIRead
-SPIReadModeCnfig
-SPIUnlock
-SPIWrite
-SPI_Write_Encrypt_Disable
-SPI_Write_Encrypt_Enable
-sprintf
-_sprintf_r
-__sprint_r
-srand
-__sread
-__srefill_r
-sscanf
-_sscanf_r
-__sseek
-__ssprint_r
-__ssputs_r
-__ssrefill_r
-__ssvfiscanf_r
-__ssvfscanf_r
-__stack
-__stack_app
-_stack_sentry
-_stack_sentry_app
-_start
-start_tb_console
-_stat_r
-_stext
-strcasecmp
-strcasestr
-strcat
-strchr
-strcmp
-strcoll
-strcpy
-strcspn
-strdup
-_strdup_r
-strftime
-strlcat
-strlcpy
-strlen
-strlwr
-strncasecmp
-strncat
-strncmp
-strncpy
-strndup
-_strndup_r
-strnlen
-strrchr
-strsep
-strspn
-strstr
-strtod
-_strtod_r
-strtof
-__strtok_r
-strtok_r
-strtol
-_strtol_r
-strtoul
-_strtoul_r
-strupr
-__subdf3
-__submore
-_sungetc_r
-_svfiprintf_r
-__svfiscanf_r
-_svfprintf_r
-__svfscanf
-__svfscanf_r
-__swbuf
-__swbuf_r
-__swrite
-__swsetup_r
-_SyscallException
-syscall_table_ptr_app
-syscall_table_ptr_pro
-_system_r
-tdefl_compress
-tdefl_compress_buffer
-tdefl_compress_mem_to_heap
-tdefl_compress_mem_to_mem
-tdefl_compress_mem_to_output
-tdefl_get_adler32
-tdefl_get_prev_return_status
-tdefl_init
-tdefl_write_image_to_png_file_in_memory
-tdefl_write_image_to_png_file_in_memory_ex
-time
-__time_load_locale
-times
-_times_r
-_timezone
-tinfl_decompress
-tinfl_decompress_mem_to_callback
-tinfl_decompress_mem_to_heap
-tinfl_decompress_mem_to_mem
-toascii
-tolower
-toupper
-__truncdfsf2
-__tzcalc_limits
-__tz_lock
-tzset
-_tzset_r
-__tz_unlock
-uartAttach
-uart_baudrate_detect
-uart_buff_switch
-UartConnCheck
-UartConnectProc
-UartDev
-uart_div_modify
-UartDwnLdProc
-UartGetCmdLn
-Uart_Init
-UartRegReadProc
-UartRegWriteProc
-uart_rx_intr_handler
-uart_rx_one_char
-uart_rx_one_char_block
-uart_rx_readbuff
-UartRxString
-UartSetBaudProc
-UartSpiAttachProc
-UartSpiReadProc
-uart_tx_flush
-uart_tx_one_char
-uart_tx_one_char2
-uart_tx_switch
-uart_tx_wait_idle
-__udivdi3
-__ulp
-__umoddi3
-ungetc
-_ungetc_r
-_unlink_r
-__unorddf2
-user_code_start
-_UserExceptionVector
-utoa
-__utoa
-vasiprintf
-_vasiprintf_r
-vasniprintf
-_vasniprintf_r
-vasnprintf
-_vasnprintf_r
-vasprintf
-_vasprintf_r
-VerifyFlashMd5Proc
-vfiprintf
-_vfiprintf_r
-vfiscanf
-_vfiscanf_r
-vfprintf
-_vfprintf_r
-vfscanf
-_vfscanf_r
-viprintf
-_viprintf_r
-viscanf
-_viscanf_r
-vprintf
-_vprintf_r
-vscanf
-_vscanf_r
-vsiprintf
-_vsiprintf_r
-vsiscanf
-_vsiscanf_r
-vsniprintf
-_vsniprintf_r
-vsnprintf
-_vsnprintf_r
-vsprintf
-_vsprintf_r
-vsscanf
-_vsscanf_r
-wcrtomb
-_wcrtomb_r
-_wctomb_r
-_WindowOverflow12
-_WindowOverflow4
-_WindowOverflow8
-_WindowUnderflow12
-_WindowUnderflow4
-_WindowUnderflow8
-write
-_write_r
-xthal_bcopy
-xthal_copy123
-xthal_get_ccompare
-xthal_get_ccount
-xthal_get_interrupt
-xthal_get_intread
-xthal_memcpy
-xthal_set_ccompare
-xthal_set_intclear
-_xtos_alloca_handler
-_xtos_cause3_handler
-_xtos_c_wrapper_handler
-_xtos_ints_off
-_xtos_ints_on
-_xtos_l1int_handler
-_xtos_p_none
-_xtos_restore_intlevel
-_xtos_return_from_exc
-_xtos_set_exception_handler
-_xtos_set_interrupt_handler
-_xtos_set_interrupt_handler_arg
-_xtos_set_intlevel
-_xtos_set_min_intlevel
-_xtos_set_vpri
-_xtos_syscall_handler
-_xtos_unhandled_exception
-_xtos_unhandled_interrupt

components/newlib/lib/fixlibc.sh

@@ -1,23 +0,0 @@
-#!/bin/bash
-
-ROMELF=~/esp8266/esp32/rom_image/eagle.pro.rom.out
-
-rm -rf extracted
-mkdir extracted
-cd extracted
-mkdir inrom
-ar x ../libc.a
-cp ../libc.a ../libc-minusrom.a
-
-nm $ROMELF | grep -e ' [TB] ' | cut -d ' ' -f 3- > romsyms
-
-for x in *.o; do
-	nm $x | grep -e ' [TB] ' | cut -d ' ' -f 3- | while read a; do
-		if [ -e "$x" ] && cat romsyms | grep -q '^'$a'$'; then
-			echo "$a found in rom"
-			mv $x inrom
-			ar -d ../libc-minusrom.a $x
-		fi
-	done
-done
-

components/newlib/syscall_table.c

@@ -25,6 +25,7 @@
 #include "rom/libc_stubs.h"
 #include "esp_vfs.h"
 #include "esp_newlib.h"
+#include "sdkconfig.h"
 
 static struct _reent s_reent;
 
@@ -76,8 +77,13 @@ static struct syscall_stub_table s_stub_table = {
     ._lock_try_acquire_recursive = &_lock_try_acquire_recursive,
     ._lock_release = &_lock_release,
     ._lock_release_recursive = &_lock_release_recursive,
+#ifdef CONFIG_NEWLIB_NANO_FORMAT
     ._printf_float = &_printf_float,
     ._scanf_float = &_scanf_float,
+#else
+    ._printf_float = NULL,
+    ._scanf_float = NULL,
+#endif
 };
 
 void esp_setup_syscall_table()

components/newlib/test/test_newlib.c

@@ -1,10 +1,11 @@
 #include <stdio.h>
+#include <stdbool.h>
 #include <ctype.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <time.h>
 #include "unity.h"
-
+#include "sdkconfig.h"
 
 TEST_CASE("test ctype functions", "[newlib]")
 {
@@ -22,6 +23,10 @@ TEST_CASE("test atoX functions", "[newlib]")
     TEST_ASSERT_EQUAL_INT(2147483647, atoi("2147483647"));
     TEST_ASSERT_EQUAL_INT(42, atoi("000000042"));
     TEST_ASSERT_EQUAL_INT(0, strtol("foo", NULL, 10));
+    TEST_ASSERT_EQUAL(0.123443, atof("0.123443"));
+    TEST_ASSERT_EQUAL(0.123443f, atoff("0.123443"));
+    TEST_ASSERT_EQUAL(31.41238, strtod("0.3141238e2", NULL));
+    TEST_ASSERT_EQUAL(0.025f, strtof("0.025", NULL));
 }
 
 TEST_CASE("test sprintf function", "[newlib]")
@@ -81,22 +86,64 @@ TEST_CASE("test time functions", "[newlib]")
 }
 
 
-static int checkFnRom(void *fn, char *name)
+static bool fn_in_rom(void *fn, char *name)
 {
-    int fnaddr = (int)fn;
+    const int fnaddr = (int)fn;
-    printf("%s: 0X%x\n", name, fnaddr);
+    return (fnaddr >= 0x40000000) && (fnaddr < 0x40070000);
-    if ((fnaddr >= 0x40000000) && (fnaddr < 0x40070000)) {
-        return 1;
-    } else {
-        return 0;
-    }
 }
 
 
-TEST_CASE("check if ROM is used for functions", "[newlib]")
+TEST_CASE("check if ROM or Flash is used for functions", "[newlib]")
 {
-    TEST_ASSERT(checkFnRom(printf, "printf"));
+#ifdef CONFIG_NEWLIB_NANO_FORMAT
-    TEST_ASSERT(checkFnRom(sscanf, "sscanf"));
+    TEST_ASSERT(fn_in_rom(printf, "printf"));
-    TEST_ASSERT(checkFnRom(atoi, "atoi"));
+    TEST_ASSERT(fn_in_rom(sscanf, "sscanf"));
-    TEST_ASSERT(checkFnRom(strtol, "strtol"));
+#else
-}
+    TEST_ASSERT_FALSE(fn_in_rom(printf, "printf"));
+    TEST_ASSERT_FALSE(fn_in_rom(sscanf, "sscanf"));
+#endif
+    TEST_ASSERT(fn_in_rom(atoi,   "atoi"));
+    TEST_ASSERT(fn_in_rom(strtol, "strtol"));
+}
+
+#ifndef CONFIG_NEWLIB_NANO_FORMAT
+TEST_CASE("test 64bit int formats", "[newlib]")
+{
+    char* res = NULL;
+    const uint64_t val = 123456789012LL;
+
+    asprintf(&res, "%llu", val);
+    TEST_ASSERT_NOT_NULL(res);
+    TEST_ASSERT_EQUAL_STRING("123456789012", res);
+
+    uint64_t sval;
+    int ret = sscanf(res, "%llu", &sval);
+    free(res);
+
+    TEST_ASSERT_EQUAL(1, ret);
+    TEST_ASSERT_EQUAL(val, sval);
+}
+#else
+TEST_CASE("test 64bit int formats", "[newlib]")
+{
+    char* res = NULL;
+    const uint64_t val = 123456789012LL;
+
+    asprintf(&res, "%llu", val);
+    TEST_ASSERT_NOT_NULL(res);
+    TEST_ASSERT_EQUAL_STRING("lu", res);
+
+    uint64_t sval;
+    int ret = sscanf(res, "%llu", &sval);
+    free(res);
+
+    TEST_ASSERT_EQUAL(0, ret);
+}
+#endif
+
+
+TEST_CASE("fmod and fmodf work as expected", "[newlib]")
+{
+    TEST_ASSERT_EQUAL(0.1, fmod(10.1, 2.0));
+    TEST_ASSERT_EQUAL(0.1f, fmodf(10.1f, 2.0f));
+}