From 5752e4d5888e9e7bfe3182ec0f24e58159fa3350 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Thu, 28 Jun 2018 12:25:26 +0800
Subject: [PATCH 1/2] esp32: fix addresses of some libgcc functions in ROM ld
 script

---
 components/esp32/ld/esp32.rom.ld    |  22 ++--
 components/esp32/test/test_libgcc.c | 185 ++++++++++++++++++++++++++++
 2 files changed, 196 insertions(+), 11 deletions(-)
 create mode 100644 components/esp32/test/test_libgcc.c

diff --git a/components/esp32/ld/esp32.rom.ld b/components/esp32/ld/esp32.rom.ld
index 8c458ff14..0bbed973d 100644
--- a/components/esp32/ld/esp32.rom.ld
+++ b/components/esp32/ld/esp32.rom.ld
@@ -28,8 +28,8 @@ PROVIDE ( BasePoint_x_256 = 0x3ff97488 );
 PROVIDE ( BasePoint_y_256 = 0x3ff97468 );
 PROVIDE ( bigHexInversion256 = 0x400168f0 );
 PROVIDE ( bigHexP256 = 0x3ff973bc );
-PROVIDE ( __bswapdi2 = 0x400649c4 );
-PROVIDE ( __bswapsi2 = 0x4006499c );
+PROVIDE ( __bswapdi2 = 0x40064b08 );
+PROVIDE ( __bswapsi2 = 0x40064ae0 );
 PROVIDE ( btdm_r_ble_bt_handler_tab_p_get = 0x40019b0c );
 PROVIDE ( btdm_r_btdm_option_data_p_get = 0x40010004 );
 PROVIDE ( btdm_r_btdm_rom_version_get = 0x40010078 );
@@ -53,8 +53,8 @@ PROVIDE ( calloc = 0x4000bee4 );
 PROVIDE ( _calloc_r = 0x4000bbf8 );
 PROVIDE ( __clear_cache = 0x40063860 );
 PROVIDE ( _close_r = 0x4000bd3c );
-PROVIDE ( __clrsbdi2 = 0x40064a38 );
-PROVIDE ( __clrsbsi2 = 0x40064a20 );
+PROVIDE ( __clrsbdi2 = 0x40064b7c );
+PROVIDE ( __clrsbsi2 = 0x40064b64 );
 PROVIDE ( __clzdi2 = 0x4000ca50 );
 PROVIDE ( __clzsi2 = 0x4000c7e8 );
 PROVIDE ( __cmpdi2 = 0x40063820 );
@@ -103,10 +103,10 @@ PROVIDE ( dh_group2_generator = 0x3ff9ada2 );
 PROVIDE ( dh_group2_prime = 0x3ff9ad22 );
 PROVIDE ( dh_group5_generator = 0x3ff9ad21 );
 PROVIDE ( dh_group5_prime = 0x3ff9ac61 );
-PROVIDE ( __divdc3 = 0x40064460 );
+PROVIDE ( __divdc3 = 0x400645a4 );
 PROVIDE ( __divdf3 = 0x40002954 );
 PROVIDE ( __divdi3 = 0x4000ca84 );
-PROVIDE ( __divsc3 = 0x40064200 );
+PROVIDE ( __divsc3 = 0x4006429c );
 PROVIDE ( __divsf3 = 0x4000234c );
 PROVIDE ( __divsi3 = 0x4000c7b8 );
 PROVIDE ( g_rom_spiflash_dummy_len_plus = 0x3ffae290 );
@@ -271,10 +271,10 @@ PROVIDE ( mmu_init = 0x400095a4 );
 PROVIDE ( __moddi3 = 0x4000cd4c );
 PROVIDE ( __modsi3 = 0x4000c7c0 );
 PROVIDE ( __month_lengths = 0x3ff9609c );
-PROVIDE ( __muldc3 = 0x40063bf4 );
+PROVIDE ( __muldc3 = 0x40063c90 );
 PROVIDE ( __muldf3 = 0x4006358c );
 PROVIDE ( __muldi3 = 0x4000c9fc );
-PROVIDE ( __mulsc3 = 0x40063934 );
+PROVIDE ( __mulsc3 = 0x40063944 );
 PROVIDE ( __mulsf3 = 0x400632c8 );
 PROVIDE ( __mulsi3 = 0x4000c7b0 );
 PROVIDE ( MultiplyBigHexByUint32_256 = 0x40016214 );
@@ -303,7 +303,7 @@ PROVIDE ( phy_get_romfuncs = 0x40004100 );
 PROVIDE ( __popcountdi2 = 0x40002ef8 );
 PROVIDE ( __popcountsi2 = 0x40002ed0 );
 PROVIDE ( __popcount_tab = 0x3ff96544 );
-PROVIDE ( __powidf2 = 0x400638d4 );
+PROVIDE ( __powidf2 = 0x400638e4 );
 PROVIDE ( __powisf2 = 0x4006389c );
 PROVIDE ( _Pri_4_HandlerAddress = 0x3ffe0648 );
 PROVIDE ( _Pri_5_HandlerAddress = 0x3ffe064c );
@@ -1449,9 +1449,9 @@ PROVIDE ( _tzname = 0x3ffae030 );
 PROVIDE ( UartDev = 0x3ffe019c );
 PROVIDE ( __ucmpdi2 = 0x40063840 );
 PROVIDE ( __udivdi3 = 0x4000cff8 );
-PROVIDE ( __udivmoddi4 = 0x40064ab0 );
+PROVIDE ( __udivmoddi4 = 0x40064bf4 );
 PROVIDE ( __udivsi3 = 0x4000c7c8 );
-PROVIDE ( __udiv_w_sdiv = 0x40064aa8 );
+PROVIDE ( __udiv_w_sdiv = 0x40064bec );
 PROVIDE ( __umoddi3 = 0x4000d280 );
 PROVIDE ( __umodsi3 = 0x4000c7d0 );
 PROVIDE ( __umulsidi3 = 0x4000c7d8 );
diff --git a/components/esp32/test/test_libgcc.c b/components/esp32/test/test_libgcc.c
new file mode 100644
index 000000000..7fca990d4
--- /dev/null
+++ b/components/esp32/test/test_libgcc.c
@@ -0,0 +1,185 @@
+#include <complex.h>
+#include "unity.h"
+
+TEST_CASE("libgcc math functions", "[rom]")
+{
+    extern int64_t __absvdi2(int64_t x);
+    TEST_ASSERT(__absvdi2(-1L) == 1);
+    extern int __absvsi2(int x);
+    TEST_ASSERT(__absvsi2(-1) == 1);
+    extern double __adddf3(double x, double y);
+    TEST_ASSERT(__adddf3(1.0, 4.0) == 5.0);
+    extern float __addsf3(float x, float y);
+    TEST_ASSERT(__addsf3(1.0f, 4.0f) == 5.0f);
+    extern int64_t __addvdi3(int64_t x, int64_t y);
+    TEST_ASSERT(__addvdi3(1L, 4L) == 5L);
+    extern int __addvsi3(int x, int y);
+    TEST_ASSERT(__addvsi3(1, 4) == 5);
+    extern int64_t __ashldi3(int64_t x, int y);
+    TEST_ASSERT(__ashldi3(1, 4) == 16);
+    extern int64_t __ashrdi3(int64_t x, int y);
+    TEST_ASSERT(__ashrdi3(4, 1) == 2);
+    extern int64_t __bswapdi2(int64_t x);
+    TEST_ASSERT(__bswapdi2(0xaabbccddeeff0011ULL) == 0x1100ffeeddccbbaaULL);
+    extern int32_t __bswapsi2(int32_t x);
+    TEST_ASSERT(__bswapsi2(0xaabbccdd) == 0xddccbbaa);
+    extern int64_t __clrsbdi2(int64_t x);
+    TEST_ASSERT(__clrsbdi2(-1) == 63);
+    extern int __clrsbsi2(int x);
+    TEST_ASSERT(__clrsbsi2(-1) == 31);
+    extern int __clzdi2(int64_t x);
+    TEST_ASSERT(__clzdi2(1) == 63);
+    extern int __clzsi2(int x);
+    TEST_ASSERT(__clzsi2(1) == 31);
+    extern int __cmpdi2(int64_t x, int64_t y);
+    TEST_ASSERT(__cmpdi2(10, 10) == 1);
+    extern int __ctzdi2(uint64_t x);
+    TEST_ASSERT(__ctzdi2(0x8000000000000000ULL) == 63);
+    extern int __ctzsi2(unsigned x);
+    TEST_ASSERT(__ctzsi2(0x80000000U) == 31);
+    extern complex double __divdc3(double a, double b, double c, double d);
+    TEST_ASSERT(__divdc3(0, 1, 1, 0) == I);
+    extern double __divdf3(double x, double y);
+    TEST_ASSERT(__divdf3(16.0, 2.0) == 8.0);
+    extern int64_t __divdi3(int64_t x, int64_t y);
+    TEST_ASSERT(__divdi3(16, 2) == 8);
+    extern complex float __divsc3(float a, float b, float c, float d);
+    TEST_ASSERT(__divsc3(0, 1, 1, 0) == I);
+    extern float __divsf3(float x, float y);
+    TEST_ASSERT(__divsf3(16.0f, 2.0f) == 8.0f);
+    extern int __divsi3(int x, int y);
+    TEST_ASSERT(__divsi3(16, 2) == 8);
+    extern int __eqdf2(double x, double y);
+    TEST_ASSERT(__eqdf2(4.0, 4.0) == 0);
+    extern int __eqsf2(float x, float y);
+    TEST_ASSERT(__eqsf2(4.0f, 4.0f) == 0);
+    extern double __extendsfdf2(float x);
+    TEST_ASSERT(__extendsfdf2(4.0f) == 4.0);
+    extern int __ffsdi2(uint64_t x);
+    TEST_ASSERT(__ffsdi2(0x8000000000000000ULL) == 64);
+    extern int __ffssi2(unsigned x);
+    TEST_ASSERT(__ffssi2(0x80000000) == 32);
+    extern int64_t __fixdfdi(double x);
+    TEST_ASSERT(__fixdfdi(4.0) == 4LL);
+    extern int __fixdfsi(double x);
+    TEST_ASSERT(__fixdfsi(4.0) == 4);
+    extern int64_t __fixsfdi(float x);
+    TEST_ASSERT(__fixsfdi(4.0f) == 4LL);
+    extern int __fixsfsi(float x);
+    TEST_ASSERT(__fixsfsi(4.0f) == 4);
+    extern unsigned __fixunsdfsi(double x);
+    TEST_ASSERT(__fixunsdfsi(16.0) == 16);
+    extern uint64_t __fixunssfdi(float x);
+    TEST_ASSERT(__fixunssfdi(16.0f) == 16);
+    extern unsigned __fixunssfsi(float x);
+    TEST_ASSERT(__fixunssfsi(16.0f) == 16);
+    extern double __floatdidf(int64_t);
+    TEST_ASSERT(__floatdidf(-1LL) == -1.0f);
+    extern float __floatdisf(int64_t);
+    TEST_ASSERT(__floatdisf(-1LL) == -1.0f);
+    extern double __floatsidf(int x);
+    TEST_ASSERT(__floatsidf(-1) == -1.0);
+    extern float __floatsisf(int x);
+    TEST_ASSERT(__floatsisf(-1) == -1.0f);
+    extern double __floatundidf(uint64_t x);
+    TEST_ASSERT(__floatundidf(16) == 16.0);
+    extern float __floatundisf(uint64_t x);
+    TEST_ASSERT(__floatundisf(16) == 16.0f);
+    extern double __floatunsidf(unsigned x);
+    TEST_ASSERT(__floatunsidf(16) == 16.0);
+    extern float __floatunsisf(unsigned x);
+    TEST_ASSERT(__floatunsisf(16) == 16.0f);
+    extern int __gedf2(double x, double y);
+    TEST_ASSERT(__gedf2(2.0, 0.0) >= 0);
+    extern int __gesf2(float x, float y);
+    TEST_ASSERT(__gesf2(2.0f, 0.0f) >= 0);
+    extern int __gtdf2(double x, double y);
+    TEST_ASSERT(__gtdf2(2.0, 0.0) >= 0);
+    extern int __gtsf2(float x, float y);
+    TEST_ASSERT(__gtsf2(2.0f, 0.0f) >= 0);
+    extern int __ledf2(double x, double y);
+    TEST_ASSERT(__ledf2(0.0, 2.0) <= 0);
+    extern int __lesf2(float x, float y);
+    TEST_ASSERT(__lesf2(0.0f, 2.0f) <= 0);
+    extern int64_t __lshrdi3(int64_t x, int y);
+    TEST_ASSERT(__lshrdi3(0x8000000000000000LL, 1) == 0x4000000000000000LL);
+    extern int __ltdf2(double x, double y);
+    TEST_ASSERT(__ltdf2(0.0, 2.0) < 0);
+    extern int __ltsf2(float x, float y);
+    TEST_ASSERT(__ltsf2(0.0f, 2.0f) < 0);
+    extern int64_t __moddi3(int64_t x, int64_t y);
+    TEST_ASSERT(__moddi3(15, 2) == 1);
+    extern int __modsi3(int x, int y);
+    TEST_ASSERT(__modsi3(15, 2) == 1);
+    extern complex double __muldc3(double a, double b, double c, double d);
+    TEST_ASSERT(__muldc3(1.0, 0.0, 0.0, 1.0) == I);
+    extern double __muldf3(double x, double y);
+    TEST_ASSERT(__muldf3(2.0, 8.0) == 16.0);
+    extern int64_t __muldi3(int64_t x, int64_t y);
+    TEST_ASSERT(__muldi3(2, 8) == 16);
+    extern complex float __mulsc3 (float a, float b, float c, float d);
+    TEST_ASSERT(__mulsc3(1.0f, 0.0f, 0.0f, -1.0f) == -I);
+    extern float __mulsf3 (float a, float b);
+    TEST_ASSERT(__mulsf3(2.0f, 8.0f) == 16.0f);
+    extern int __mulsi3(int x, int y);
+    TEST_ASSERT(__mulsi3(2, 8) == 16);
+    extern int __mulvdi3(int64_t x, int64_t y);
+    TEST_ASSERT(__mulvdi3(2, 8) == 16);
+    extern int __mulvsi3(int x, int y);
+    TEST_ASSERT(__mulvsi3(2, 8) == 16);
+    extern int __nedf2(double x, double y);
+    TEST_ASSERT(__nedf2(2.0, 2.0) == 0);
+    extern double __negdf2(double x);
+    TEST_ASSERT(__negdf2(1.0) == -1.0);
+    extern int64_t __negdi2(int64_t x);
+    TEST_ASSERT(__negdi2(-1LL) == 1);
+    extern float __negsf2(float x);
+    TEST_ASSERT(__negsf2(-1.0f) == 1.0f);
+    extern int64_t __negvdi2(int64_t x);
+    TEST_ASSERT(__negvdi2(-1LL) == 1);
+    extern int __negvsi2(int x);
+    TEST_ASSERT(__negvsi2(-1) == 1);
+    extern int __nesf2(float x, float y);
+    TEST_ASSERT(__nesf2(2.0, 0.0) != 0);
+    extern int __paritysi2(unsigned x);
+    TEST_ASSERT(__paritysi2(0x10101010) == 0);
+    extern int __popcountdi2(uint64_t);
+    TEST_ASSERT(__popcountdi2(0xaaaaaaaa11111111ULL) == 24);
+    extern int __popcountsi2(unsigned x);
+    TEST_ASSERT(__popcountsi2(0x11111111) == 8);
+    extern double __powidf2(double x, int y);
+    TEST_ASSERT(__powidf2(2.0, -1) == 0.5);
+    extern float __powisf2(float x, int y);
+    TEST_ASSERT(__powisf2(2.0f, 2) == 4.0f);
+    extern double __subdf3(double x, double y);
+    TEST_ASSERT(__subdf3(2.0, 1.0) == 1.0);
+    extern float __subsf3(float x, float y);
+    TEST_ASSERT(__subsf3(5.0f, 4.0f) == 1.0f);
+    extern int64_t __subvdi3(int64_t x, int64_t y);
+    TEST_ASSERT(__subvdi3(-1LL, -1LL) == 0);
+    extern int __subvsi3(int x, int y);
+    TEST_ASSERT(__subvsi3(-1, -1) == 0);
+    extern float __truncdfsf2(double x);
+    TEST_ASSERT(__truncdfsf2(4.0) == 4.0f);
+    extern int __ucmpdi2(uint64_t x, uint64_t y);
+    TEST_ASSERT(__ucmpdi2(0x100000000ULL, 0x100000000ULL) == 1);
+    extern uint64_t __udivdi3(uint64_t x, uint64_t y);
+    TEST_ASSERT(__udivdi3(15, 2) == 7);
+    extern uint64_t __udivmoddi4(uint64_t x, uint64_t y, uint64_t* z);
+    uint64_t z;
+    TEST_ASSERT(__udivmoddi4(15, 2, &z) == 7);
+    TEST_ASSERT(z == 1);
+    extern unsigned __udivsi3(unsigned x, unsigned y);
+    TEST_ASSERT(__udivsi3(15, 2) == 7);
+    extern uint64_t __umoddi3(uint64_t x, uint64_t y);
+    TEST_ASSERT(__umoddi3(15, 2) == 1);
+    extern unsigned __umodsi3(unsigned x, unsigned y);
+    TEST_ASSERT(__umodsi3(15, 2) == 1);
+    extern uint64_t __umulsidi3(unsigned x, unsigned y);
+    TEST_ASSERT(__umulsidi3(0x10000000, 0x10000000) == 0x100000000000000ULL);
+    extern int __unorddf2(double x, double y);
+    TEST_ASSERT(__unorddf2(1.0, 2.0) == 0);
+    extern int __unordsf2(float x, float y);
+    TEST_ASSERT(__unordsf2(2.0f, 1.0f) == 0);
+
+}

From debe83c3b5ced0aa0de1a27d5490788fe87607d7 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Thu, 28 Jun 2018 12:48:31 +0800
Subject: [PATCH 2/2] esp32: force pure math functions from libgcc to be linked
 from ROM

---
 components/esp32/component.mk           |  3 +
 components/esp32/ld/esp32.rom.ld        | 91 -------------------------
 components/esp32/ld/esp32.rom.libgcc.ld | 91 +++++++++++++++++++++++++
 3 files changed, 94 insertions(+), 91 deletions(-)
 create mode 100644 components/esp32/ld/esp32.rom.libgcc.ld

diff --git a/components/esp32/component.mk b/components/esp32/component.mk
index fb53bfbb4..6c03587a3 100644
--- a/components/esp32/component.mk
+++ b/components/esp32/component.mk
@@ -13,6 +13,9 @@ endif
 #specifies its own scripts.
 LINKER_SCRIPTS += esp32.common.ld esp32.rom.ld esp32.peripherals.ld
 
+#Force pure functions from libgcc.a to be linked from ROM
+LINKER_SCRIPTS += esp32.rom.libgcc.ld
+
 #SPI-RAM incompatible functions can be used in when the SPI RAM 
 #workaround is not enabled.
 ifndef CONFIG_SPIRAM_CACHE_WORKAROUND
diff --git a/components/esp32/ld/esp32.rom.ld b/components/esp32/ld/esp32.rom.ld
index 0bbed973d..7e6cc72bf 100644
--- a/components/esp32/ld/esp32.rom.ld
+++ b/components/esp32/ld/esp32.rom.ld
@@ -4,32 +4,22 @@ Generated for ROM with MD5sum:
 ab8282ae908fe9e7a63fb2a4ac2df013  ../../rom_image/prorom.elf
 */
 PROVIDE ( abort = 0x4000bba4 );
-PROVIDE ( __absvdi2 = 0x4006387c );
-PROVIDE ( __absvsi2 = 0x40063868 );
 PROVIDE ( Add2SelfBigHex256 = 0x40015b7c );
 PROVIDE ( AddBigHex256 = 0x40015b28 );
 PROVIDE ( AddBigHexModP256 = 0x40015c98 );
-PROVIDE ( __adddf3 = 0x40002590 );
 PROVIDE ( AddP256 = 0x40015c74 );
 PROVIDE ( AddPdiv2_256 = 0x40015ce0 );
-PROVIDE ( __addsf3 = 0x400020e8 );
-PROVIDE ( __addvdi3 = 0x40002cbc );
-PROVIDE ( __addvsi3 = 0x40002c98 );
 PROVIDE ( aes_128_cbc_decrypt = 0x4005cc7c );
 PROVIDE ( aes_128_cbc_encrypt = 0x4005cc18 );
 PROVIDE ( aes_unwrap = 0x4005ccf0 );
 PROVIDE ( app_gpio_arg = 0x3ffe003c );
 PROVIDE ( app_gpio_handler = 0x3ffe0040 );
-PROVIDE ( __ashldi3 = 0x4000c818 );
-PROVIDE ( __ashrdi3 = 0x4000c830 );
 PROVIDE ( base64_decode = 0x4005ced8 );
 PROVIDE ( base64_encode = 0x4005cdbc );
 PROVIDE ( BasePoint_x_256 = 0x3ff97488 );
 PROVIDE ( BasePoint_y_256 = 0x3ff97468 );
 PROVIDE ( bigHexInversion256 = 0x400168f0 );
 PROVIDE ( bigHexP256 = 0x3ff973bc );
-PROVIDE ( __bswapdi2 = 0x40064b08 );
-PROVIDE ( __bswapsi2 = 0x40064ae0 );
 PROVIDE ( btdm_r_ble_bt_handler_tab_p_get = 0x40019b0c );
 PROVIDE ( btdm_r_btdm_option_data_p_get = 0x40010004 );
 PROVIDE ( btdm_r_btdm_rom_version_get = 0x40010078 );
@@ -53,11 +43,6 @@ PROVIDE ( calloc = 0x4000bee4 );
 PROVIDE ( _calloc_r = 0x4000bbf8 );
 PROVIDE ( __clear_cache = 0x40063860 );
 PROVIDE ( _close_r = 0x4000bd3c );
-PROVIDE ( __clrsbdi2 = 0x40064b7c );
-PROVIDE ( __clrsbsi2 = 0x40064b64 );
-PROVIDE ( __clzdi2 = 0x4000ca50 );
-PROVIDE ( __clzsi2 = 0x4000c7e8 );
-PROVIDE ( __cmpdi2 = 0x40063820 );
 PROVIDE ( co_default_bdaddr = 0x3ffae704 );
 PROVIDE ( co_null_bdaddr = 0x3ffb80e0 );
 PROVIDE ( co_sca2ppm = 0x3ff971e8 );
@@ -69,8 +54,6 @@ PROVIDE ( crc8_be = 0x4005d114 );
 PROVIDE ( crc8_le = 0x4005d0e0 );
 PROVIDE ( _ctype_ = 0x3ff96354 );
 PROVIDE ( __ctype_ptr__ = 0x3ff96350 );
-PROVIDE ( __ctzdi2 = 0x4000ca64 );
-PROVIDE ( __ctzsi2 = 0x4000c7f0 );
 PROVIDE ( _data_end_rom = 0x4000d5c8 );
 PROVIDE ( _data_end_btdm_rom = 0x4000d4f8 );
 PROVIDE ( _data_start_rom = 0x4000d4f8 );
@@ -103,49 +86,21 @@ PROVIDE ( dh_group2_generator = 0x3ff9ada2 );
 PROVIDE ( dh_group2_prime = 0x3ff9ad22 );
 PROVIDE ( dh_group5_generator = 0x3ff9ad21 );
 PROVIDE ( dh_group5_prime = 0x3ff9ac61 );
-PROVIDE ( __divdc3 = 0x400645a4 );
-PROVIDE ( __divdf3 = 0x40002954 );
-PROVIDE ( __divdi3 = 0x4000ca84 );
-PROVIDE ( __divsc3 = 0x4006429c );
-PROVIDE ( __divsf3 = 0x4000234c );
-PROVIDE ( __divsi3 = 0x4000c7b8 );
 PROVIDE ( g_rom_spiflash_dummy_len_plus = 0x3ffae290 );
 PROVIDE ( ecc_env = 0x3ffb8d60 );
 PROVIDE ( ecc_Jacobian_InfinityPoint256 = 0x3ff972e8 );
 PROVIDE ( em_buf_env = 0x3ffb8d74 );
 PROVIDE ( environ = 0x3ffae0b4 );
-PROVIDE ( __eqdf2 = 0x400636a8 );
-PROVIDE ( __eqsf2 = 0x40063374 );
 PROVIDE ( esp_crc8 = 0x4005d144 );
 PROVIDE ( _etext = 0x4000d66c );
 PROVIDE ( ets_readySet_ = 0x3ffe01f0 );
 PROVIDE ( ets_startup_callback = 0x3ffe0404 );
 PROVIDE ( exc_cause_table = 0x3ff991d0 );
 PROVIDE ( _exit_r = 0x4000bd28 );
-PROVIDE ( __extendsfdf2 = 0x40002c34 );
-PROVIDE ( __ffsdi2 = 0x4000ca2c );
-PROVIDE ( __ffssi2 = 0x4000c804 );
-PROVIDE ( __fixdfdi = 0x40002ac4 );
-PROVIDE ( __fixdfsi = 0x40002a78 );
-PROVIDE ( __fixsfdi = 0x4000244c );
-PROVIDE ( __fixsfsi = 0x4000240c );
-PROVIDE ( __fixunsdfsi = 0x40002b30 );
-PROVIDE ( __fixunssfdi = 0x40002504 );
-PROVIDE ( __fixunssfsi = 0x400024ac );
-PROVIDE ( __floatdidf = 0x4000c988 );
-PROVIDE ( __floatdisf = 0x4000c8c0 );
-PROVIDE ( __floatsidf = 0x4000c944 );
-PROVIDE ( __floatsisf = 0x4000c870 );
-PROVIDE ( __floatundidf = 0x4000c978 );
-PROVIDE ( __floatundisf = 0x4000c8b0 );
-PROVIDE ( __floatunsidf = 0x4000c938 );
-PROVIDE ( __floatunsisf = 0x4000c864 );
 PROVIDE ( free = 0x4000beb8 );
 PROVIDE ( _free_r = 0x4000bbcc );
 PROVIDE ( _fstat_r = 0x4000bccc );
 PROVIDE ( __gcc_bcmp = 0x40064a70 );
-PROVIDE ( __gedf2 = 0x40063768 );
-PROVIDE ( __gesf2 = 0x4006340c );
 PROVIDE ( _getpid_r = 0x4000bcfc );
 PROVIDE ( __getreent = 0x4000be8c );
 PROVIDE ( _gettimeofday_r = 0x4000bc58 );
@@ -155,8 +110,6 @@ PROVIDE ( GF_Point_Jacobian_To_Affine256 = 0x40016b0c );
 PROVIDE ( _global_impure_ptr = 0x3ffae0b0 );
 PROVIDE ( g_phyFuns_instance = 0x3ffae0c4 );
 PROVIDE ( g_rom_flashchip = 0x3ffae270 );
-PROVIDE ( __gtdf2 = 0x400636dc );
-PROVIDE ( __gtsf2 = 0x400633a0 );
 PROVIDE ( gTxMsg = 0x3ffe0050 );
 PROVIDE ( hci_cmd_desc_root_tab = 0x3ff976d4 );
 PROVIDE ( hci_cmd_desc_tab_ctrl_bb = 0x3ff97b70 );
@@ -202,8 +155,6 @@ PROVIDE ( ld_env = 0x3ffb9510 );
 PROVIDE ( ld_pcm_settings_dft = 0x3ff98a0c );
 PROVIDE ( ld_sched_params = 0x3ffb96c0 );
 PROVIDE ( ld_sync_train_channels = 0x3ff98a3c );
-PROVIDE ( __ledf2 = 0x40063704 );
-PROVIDE ( __lesf2 = 0x400633c0 );
 PROVIDE ( _link_r = 0x4000bc9c );
 PROVIDE ( llc_default_handler = 0x3ff98b3c );
 PROVIDE ( llc_default_state_tab_p_get = 0x40046058 );
@@ -256,9 +207,6 @@ PROVIDE ( _lock_release_recursive = 0x4000be78 );
 PROVIDE ( _lock_try_acquire = 0x4000be3c );
 PROVIDE ( _lock_try_acquire_recursive = 0x4000be50 );
 PROVIDE ( _lseek_r = 0x4000bd8c );
-PROVIDE ( __lshrdi3 = 0x4000c84c );
-PROVIDE ( __ltdf2 = 0x40063790 );
-PROVIDE ( __ltsf2 = 0x4006342c );
 PROVIDE ( malloc = 0x4000bea0 );
 PROVIDE ( _malloc_r = 0x4000bbb4 );
 PROVIDE ( maxSecretKey_256 = 0x3ff97448 );
@@ -268,43 +216,19 @@ PROVIDE ( MD5Init = 0x4005da7c );
 PROVIDE ( MD5Update = 0x4005da9c );
 PROVIDE ( md5_vector = 0x4005db80 );
 PROVIDE ( mmu_init = 0x400095a4 );
-PROVIDE ( __moddi3 = 0x4000cd4c );
-PROVIDE ( __modsi3 = 0x4000c7c0 );
 PROVIDE ( __month_lengths = 0x3ff9609c );
-PROVIDE ( __muldc3 = 0x40063c90 );
-PROVIDE ( __muldf3 = 0x4006358c );
-PROVIDE ( __muldi3 = 0x4000c9fc );
-PROVIDE ( __mulsc3 = 0x40063944 );
-PROVIDE ( __mulsf3 = 0x400632c8 );
-PROVIDE ( __mulsi3 = 0x4000c7b0 );
 PROVIDE ( MultiplyBigHexByUint32_256 = 0x40016214 );
 PROVIDE ( MultiplyBigHexModP256 = 0x400160b8 );
 PROVIDE ( MultiplyByU32ModP256 = 0x40015fdc );
 PROVIDE ( multofup = 0x4000ab8c );
-PROVIDE ( __mulvdi3 = 0x40002d78 );
-PROVIDE ( __mulvsi3 = 0x40002d60 );
 PROVIDE ( mz_adler32 = 0x4005edbc );
 PROVIDE ( mz_crc32 = 0x4005ee88 );
 PROVIDE ( mz_free = 0x4005eed4 );
-PROVIDE ( __nedf2 = 0x400636a8 );
-PROVIDE ( __negdf2 = 0x400634a0 );
-PROVIDE ( __negdi2 = 0x4000ca14 );
-PROVIDE ( __negsf2 = 0x400020c0 );
-PROVIDE ( __negvdi2 = 0x40002e98 );
-PROVIDE ( __negvsi2 = 0x40002e78 );
-PROVIDE ( __nesf2 = 0x40063374 );
 PROVIDE ( notEqual256 = 0x40015b04 );
-PROVIDE ( __nsau_data = 0x3ff96544 );
 PROVIDE ( one_bits = 0x3ff971f8 );
 PROVIDE ( _open_r = 0x4000bd54 );
-PROVIDE ( __paritysi2 = 0x40002f3c );
 PROVIDE ( pbkdf2_sha1 = 0x40060ba4 );
 PROVIDE ( phy_get_romfuncs = 0x40004100 );
-PROVIDE ( __popcountdi2 = 0x40002ef8 );
-PROVIDE ( __popcountsi2 = 0x40002ed0 );
-PROVIDE ( __popcount_tab = 0x3ff96544 );
-PROVIDE ( __powidf2 = 0x400638e4 );
-PROVIDE ( __powisf2 = 0x4006389c );
 PROVIDE ( _Pri_4_HandlerAddress = 0x3ffe0648 );
 PROVIDE ( _Pri_5_HandlerAddress = 0x3ffe064c );
 PROVIDE ( r_btdm_option_data = 0x3ffae6e0 );
@@ -1418,15 +1342,11 @@ PROVIDE ( _start = 0x40000704 );
 PROVIDE ( start_tb_console = 0x4005a980 );
 PROVIDE ( _stat_r = 0x4000bcb4 );
 PROVIDE ( _stext = 0x40000560 );
-PROVIDE ( __subdf3 = 0x400026e4 );
-PROVIDE ( __subsf3 = 0x400021d0 );
 PROVIDE ( SubtractBigHex256 = 0x40015bcc );
 PROVIDE ( SubtractBigHexMod256 = 0x40015e8c );
 PROVIDE ( SubtractBigHexUint32_256 = 0x40015f8c );
 PROVIDE ( SubtractFromSelfBigHex256 = 0x40015c20 );
 PROVIDE ( SubtractFromSelfBigHexSign256 = 0x40015dc8 );
-PROVIDE ( __subvdi3 = 0x40002d20 );
-PROVIDE ( __subvsi3 = 0x40002cf8 );
 PROVIDE ( sw_to_hw = 0x3ffb8d40 );
 PROVIDE ( syscall_table_ptr_app = 0x3ffae020 );
 PROVIDE ( syscall_table_ptr_pro = 0x3ffae024 );
@@ -1444,20 +1364,9 @@ PROVIDE ( _timezone = 0x3ffae0a0 );
 PROVIDE ( tinfl_decompress = 0x4005ef30 );
 PROVIDE ( tinfl_decompress_mem_to_callback = 0x40060090 );
 PROVIDE ( tinfl_decompress_mem_to_mem = 0x40060050 );
-PROVIDE ( __truncdfsf2 = 0x40002b90 );
 PROVIDE ( _tzname = 0x3ffae030 );
 PROVIDE ( UartDev = 0x3ffe019c );
-PROVIDE ( __ucmpdi2 = 0x40063840 );
-PROVIDE ( __udivdi3 = 0x4000cff8 );
-PROVIDE ( __udivmoddi4 = 0x40064bf4 );
-PROVIDE ( __udivsi3 = 0x4000c7c8 );
-PROVIDE ( __udiv_w_sdiv = 0x40064bec );
-PROVIDE ( __umoddi3 = 0x4000d280 );
-PROVIDE ( __umodsi3 = 0x4000c7d0 );
-PROVIDE ( __umulsidi3 = 0x4000c7d8 );
 PROVIDE ( _unlink_r = 0x4000bc84 );
-PROVIDE ( __unorddf2 = 0x400637f4 );
-PROVIDE ( __unordsf2 = 0x40063478 );
 PROVIDE ( user_code_start = 0x3ffe0400 );
 PROVIDE ( veryBigHexP256 = 0x3ff9736c );
 PROVIDE ( __wctomb = 0x3ff96540 );
diff --git a/components/esp32/ld/esp32.rom.libgcc.ld b/components/esp32/ld/esp32.rom.libgcc.ld
new file mode 100644
index 000000000..51448b332
--- /dev/null
+++ b/components/esp32/ld/esp32.rom.libgcc.ld
@@ -0,0 +1,91 @@
+__absvdi2 = 0x4006387c;
+__absvsi2 = 0x40063868;
+__adddf3 = 0x40002590;
+__addsf3 = 0x400020e8;
+__addvdi3 = 0x40002cbc;
+__addvsi3 = 0x40002c98;
+__ashldi3 = 0x4000c818;
+__ashrdi3 = 0x4000c830;
+__bswapdi2 = 0x40064b08;
+__bswapsi2 = 0x40064ae0;
+__clrsbdi2 = 0x40064b7c;
+__clrsbsi2 = 0x40064b64;
+__clzdi2 = 0x4000ca50;
+__clzsi2 = 0x4000c7e8;
+__cmpdi2 = 0x40063820;
+__ctzdi2 = 0x4000ca64;
+__ctzsi2 = 0x4000c7f0;
+__divdc3 = 0x400645a4;
+__divdf3 = 0x40002954;
+__divdi3 = 0x4000ca84;
+__divsc3 = 0x4006429c;
+__divsf3 = 0x4000234c;
+__divsi3 = 0x4000c7b8;
+__eqdf2 = 0x400636a8;
+__eqsf2 = 0x40063374;
+__extendsfdf2 = 0x40002c34;
+__ffsdi2 = 0x4000ca2c;
+__ffssi2 = 0x4000c804;
+__fixdfdi = 0x40002ac4;
+__fixdfsi = 0x40002a78;
+__fixsfdi = 0x4000244c;
+__fixsfsi = 0x4000240c;
+__fixunsdfsi = 0x40002b30;
+__fixunssfdi = 0x40002504;
+__fixunssfsi = 0x400024ac;
+__floatdidf = 0x4000c988;
+__floatdisf = 0x4000c8c0;
+__floatsidf = 0x4000c944;
+__floatsisf = 0x4000c870;
+__floatundidf = 0x4000c978;
+__floatundisf = 0x4000c8b0;
+__floatunsidf = 0x4000c938;
+__floatunsisf = 0x4000c864;
+__gedf2 = 0x40063768;
+__gesf2 = 0x4006340c;
+__gtdf2 = 0x400636dc;
+__gtsf2 = 0x400633a0;
+__ledf2 = 0x40063704;
+__lesf2 = 0x400633c0;
+__lshrdi3 = 0x4000c84c;
+__ltdf2 = 0x40063790;
+__ltsf2 = 0x4006342c;
+__moddi3 = 0x4000cd4c;
+__modsi3 = 0x4000c7c0;
+__muldc3 = 0x40063c90;
+__muldf3 = 0x4006358c;
+__muldi3 = 0x4000c9fc;
+__mulsc3 = 0x40063944;
+__mulsf3 = 0x400632c8;
+__mulsi3 = 0x4000c7b0;
+__mulvdi3 = 0x40002d78;
+__mulvsi3 = 0x40002d60;
+__nedf2 = 0x400636a8;
+__negdf2 = 0x400634a0;
+__negdi2 = 0x4000ca14;
+__negsf2 = 0x400020c0;
+__negvdi2 = 0x40002e98;
+__negvsi2 = 0x40002e78;
+__nesf2 = 0x40063374;
+__nsau_data = 0x3ff96544;
+__paritysi2 = 0x40002f3c;
+__popcount_tab = 0x3ff96544;
+__popcountdi2 = 0x40002ef8;
+__popcountsi2 = 0x40002ed0;
+__powidf2 = 0x400638e4;
+__powisf2 = 0x4006389c;
+__subdf3 = 0x400026e4;
+__subsf3 = 0x400021d0;
+__subvdi3 = 0x40002d20;
+__subvsi3 = 0x40002cf8;
+__truncdfsf2 = 0x40002b90;
+__ucmpdi2 = 0x40063840;
+__udiv_w_sdiv = 0x40064bec;
+__udivdi3 = 0x4000cff8;
+__udivmoddi4 = 0x40064bf4;
+__udivsi3 = 0x4000c7c8;
+__umoddi3 = 0x4000d280;
+__umodsi3 = 0x4000c7d0;
+__umulsidi3 = 0x4000c7d8;
+__unorddf2 = 0x400637f4;
+__unordsf2 = 0x40063478;