From 436aa8b8ccdb31d761d8fae8b75391de0783781a Mon Sep 17 00:00:00 2001
From: Michael Jacobsen <michael@visbyjacobsen.dk>
Date: Thu, 30 Jul 2015 19:34:13 +0200
Subject: [PATCH] Mostly updated header files for use in C++

---
 axtls/include/version.h             |  2 +-
 common.mk                           | 17 ++++++++++++-----
 core/include/common_macros.h        |  6 +++++-
 include/espressif/esp8266/esp8266.h |  8 ++++++++
 include/espressif/esp_misc.h        |  8 ++++++++
 include/espressif/esp_softap.h      |  8 ++++++++
 include/espressif/esp_sta.h         |  8 ++++++++
 include/espressif/esp_system.h      |  8 ++++++++
 include/espressif/esp_timer.h       |  8 ++++++++
 include/espressif/esp_wifi.h        | 10 +++++++++-
 include/espressif/sdk_private.h     |  9 +++++++++
 include/espressif/spi_flash.h       | 10 ++++++++++
 ld/eagle.app.v6.ld                  |  3 +++
 13 files changed, 97 insertions(+), 8 deletions(-)

diff --git a/axtls/include/version.h b/axtls/include/version.h
index 43c7194..8fee21b 100644
--- a/axtls/include/version.h
+++ b/axtls/include/version.h
@@ -5,6 +5,6 @@
 
 #ifndef _VERSION_H
 
-#define AXTLS_VERSION "esp-open-rtos axTLS "GITSHORTREV
+#define AXTLS_VERSION "esp-open-rtos axTLS " GITSHORTREV
 
 #endif
diff --git a/common.mk b/common.mk
index a893e29..00a77dd 100644
--- a/common.mk
+++ b/common.mk
@@ -94,14 +94,19 @@ OWN_LIBC ?= 1
 # Note: you will need a recent esp
 ENTRY_SYMBOL ?= call_user_start
 
-CFLAGS		= -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals -std=gnu99 $(CPPFLAGS)
+# Common flags for both C & C++_
+C_CXX_FLAGS     = -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals $(CPPFLAGS)
+# Flags for C only
+CFLAGS		= $(C_CXX_FLAGS) -std=gnu99
+# Flags for C++ only
+CXXFLAGS	= $(C_CXX_FLAGS) -fno-exceptions
 LDFLAGS		= -nostdlib -Wl,--no-check-sections -Wl,-L$(BUILD_DIR)sdklib -Wl,-L$(ROOT)lib -u $(ENTRY_SYMBOL) -Wl,-static -Wl,-Map=build/${PROGRAM}.map $(EXTRA_LDFLAGS)
 
 ifeq ($(FLAVOR),debug)
-    CFLAGS += -g -O0
+    C_CXX_FLAGS += -g -O0
     LDFLAGS += -g -O0
 else
-    CFLAGS += -g -O2
+    C_CXX_FLAGS += -g -O2
     LDFLAGS += -g -O2
 endif
 
@@ -138,8 +143,8 @@ endif
 LINKER_SCRIPTS_PROCESSED = $(addprefix $(LD_DIR),$(LINKER_SCRIPTS))
 
 # derive various parts of compiler/linker arguments
-SDK_LIB_ARGS         = $(addprefix -l,$(SDK_LIBS))
-LIB_ARGS             = $(addprefix -l,$(LIBS))
+SDK_LIB_ARGS  = $(addprefix -l,$(SDK_LIBS))
+LIB_ARGS      = $(addprefix -l,$(LIBS))
 PROGRAM_OUT   = $(BUILD_DIR)$(PROGRAM).out
 LDFLAGS      += $(addprefix -T,$(LINKER_SCRIPTS_PROCESSED))
 
@@ -228,7 +233,9 @@ $(1)_MAKEFILE ?= $(lastword $(MAKEFILE_LIST))
 
 ### determine compiler arguments ###
 $(1)_CFLAGS ?= $(CFLAGS)
+$(1)_CXXFLAGS ?= $(CXXFLAGS)
 $(1)_CC_ARGS = $(Q) $(CC) $$(addprefix -I,$$(INC_DIRS)) $$(addprefix -I,$$($(1)_INC_DIR)) $$($(1)_CFLAGS)
+$(1)_CXX_ARGS = $(Q) $(C++) $$(addprefix -I,$$(INC_DIRS)) $$(addprefix -I,$$($(1)_INC_DIR)) $$($(1)_CXXFLAGS)
 $(1)_AR = $(call lc,$(BUILD_DIR)$(1).a)
 
 $$($(1)_OBJ_DIR)%.o: $$($(1)_REAL_ROOT)%.c $$($(1)_MAKEFILE) $(wildcard $(ROOT)*.mk) | $$($(1)_SRC_DIR)
diff --git a/core/include/common_macros.h b/core/include/common_macros.h
index b0c7a08..b0d89e1 100644
--- a/core/include/common_macros.h
+++ b/core/include/common_macros.h
@@ -45,7 +45,11 @@
    Important to note: IROM flash can only be accessed via 32-bit word
    aligned reads. It's up to the user of this attribute to ensure this.
 */
-#define IROM __attribute__((section(".irom0.literal"))) const
+#ifdef	__cplusplus
+    #define IROM __attribute__((section(".irom0.literal")))
+#else
+    #define IROM __attribute__((section(".irom0.literal"))) const
+#endif
 
 #define INLINED inline static __attribute__((always_inline)) __attribute__((unused))
 
diff --git a/include/espressif/esp8266/esp8266.h b/include/espressif/esp8266/esp8266.h
index 2d8b21b..4bf1a7a 100644
--- a/include/espressif/esp8266/esp8266.h
+++ b/include/espressif/esp8266/esp8266.h
@@ -6,6 +6,10 @@
 #ifndef __ESP8266_H__
 #define __ESP8266_H__
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 #include "ets_sys.h"
 #include "eagle_soc.h"
 #include "gpio_register.h"
@@ -14,5 +18,9 @@
 #include "timer_register.h"
 #include "uart_register.h"
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
 
diff --git a/include/espressif/esp_misc.h b/include/espressif/esp_misc.h
index d8ce65e..6490fa5 100644
--- a/include/espressif/esp_misc.h
+++ b/include/espressif/esp_misc.h
@@ -8,6 +8,10 @@
 
 #include "lwip/ip_addr.h"
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 #define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
 
@@ -23,4 +27,8 @@ void sdk_os_delay_us(uint16_t us);
 void sdk_os_install_putc1(void (*p)(char c));
 void sdk_os_putc(char c);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/esp_softap.h b/include/espressif/esp_softap.h
index 44f06cc..8a81aef 100644
--- a/include/espressif/esp_softap.h
+++ b/include/espressif/esp_softap.h
@@ -6,6 +6,10 @@
 #ifndef __ESP_SOFTAP_H__
 #define __ESP_SOFTAP_H__
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 struct sdk_softap_config {
     uint8_t ssid[32];
     uint8_t password[64];
@@ -20,4 +24,8 @@ struct sdk_softap_config {
 bool sdk_wifi_softap_get_config(struct sdk_softap_config *config);
 bool sdk_wifi_softap_set_config(struct sdk_softap_config *config);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/esp_sta.h b/include/espressif/esp_sta.h
index 8b9059a..0c94a6c 100644
--- a/include/espressif/esp_sta.h
+++ b/include/espressif/esp_sta.h
@@ -10,6 +10,10 @@
 
 #include "queue.h"
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 struct sdk_station_config {
     uint8_t ssid[32];
     uint8_t password[64];
@@ -68,4 +72,8 @@ enum {
 
 uint8_t sdk_wifi_station_get_connect_status(void);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/esp_system.h b/include/espressif/esp_system.h
index 93eea64..e37263e 100644
--- a/include/espressif/esp_system.h
+++ b/include/espressif/esp_system.h
@@ -6,6 +6,10 @@
 #ifndef __ESP_SYSTEM_H__
 #define __ESP_SYSTEM_H__
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 enum sdk_rst_reason {
 	DEFAULT_RST	  = 0,
 	WDT_RST	      = 1,
@@ -54,4 +58,8 @@ bool sdk_system_rtc_mem_write(uint8_t dst, const void *src, uint16_t n);
 
 void sdk_system_uart_swap(void);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/esp_timer.h b/include/espressif/esp_timer.h
index 6f05547..0ceb131 100644
--- a/include/espressif/esp_timer.h
+++ b/include/espressif/esp_timer.h
@@ -6,6 +6,10 @@
 #ifndef __ESP_TIMER_H__
 #define __ESP_TIMER_H__
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 /* timer related */
 typedef void sdk_os_timer_func_t(void *timer_arg);
 
@@ -19,4 +23,8 @@ typedef struct _os_timer_t {
     void               *timer_arg;
 } sdk_os_timer_t;
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/esp_wifi.h b/include/espressif/esp_wifi.h
index 5dae103..5d9ba19 100644
--- a/include/espressif/esp_wifi.h
+++ b/include/espressif/esp_wifi.h
@@ -13,6 +13,10 @@
 
 #include <lwip/ip_addr.h>
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 enum {
 	NULL_MODE = 0,
 	STATION_MODE,
@@ -67,7 +71,11 @@ enum sdk_phy_mode {
 	PHY_MODE_11N    = 3
 };
 
-enum phy_mode sdk_wifi_get_phy_mode(void);
+enum sdk_phy_mode sdk_wifi_get_phy_mode(void);
 bool sdk_wifi_set_phy_mode(enum sdk_phy_mode mode);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/sdk_private.h b/include/espressif/sdk_private.h
index 4340999..fa643a7 100644
--- a/include/espressif/sdk_private.h
+++ b/include/espressif/sdk_private.h
@@ -15,6 +15,11 @@
 #define SDK_PRIVATE_H
 
 #include <stdint.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 struct ip_addr;
 
 /*********************************************
@@ -49,4 +54,8 @@ void sdk_system_station_got_ip_set(struct ip_addr *ip_addr, struct ip_addr *sn_m
  */
 void sdk_system_pp_recycle_rx_pkt(void *eb);
 
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/include/espressif/spi_flash.h b/include/espressif/spi_flash.h
index 1805cc7..224bce4 100644
--- a/include/espressif/spi_flash.h
+++ b/include/espressif/spi_flash.h
@@ -6,6 +6,10 @@
 #ifndef __SPI_FLASH_H__
 #define __SPI_FLASH_H__
 
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
 typedef enum {
     SPI_FLASH_RESULT_OK,
     SPI_FLASH_RESULT_ERR,
@@ -21,6 +25,7 @@ sdk_SpiFlashOpResult sdk_spi_flash_erase_sector(uint16_t sec);
 sdk_SpiFlashOpResult sdk_spi_flash_write(uint32_t des_addr, uint32_t *src_addr, uint32_t size);
 sdk_SpiFlashOpResult sdk_spi_flash_read(uint32_t src_addr, uint32_t *des_addr, uint32_t size);
 
+    
 /* SDK uses this structure internally to account for flash size.
 
    chip_size field is initialised during startup from the flash size
@@ -42,4 +47,9 @@ typedef struct {
 
 extern sdk_flashchip_t sdk_flashchip;
 
+
+#ifdef	__cplusplus
+}
+#endif
+
 #endif
diff --git a/ld/eagle.app.v6.ld b/ld/eagle.app.v6.ld
index 412441d..566ad67 100644
--- a/ld/eagle.app.v6.ld
+++ b/ld/eagle.app.v6.ld
@@ -166,11 +166,14 @@ SECTIONS
     *(.gnu.linkonce.e.*)
     *(.gnu.version_r)
     *(.eh_frame)
+    . = (. + 3) & ~ 3;
     /*  C++ constructor and destructor tables, properly ordered:  */
+    __init_array_start = ABSOLUTE(.);
     KEEP (*crtbegin.o(.ctors))
     KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
     KEEP (*(SORT(.ctors.*)))
     KEEP (*(.ctors))
+    __init_array_end = ABSOLUTE(.);
     KEEP (*crtbegin.o(.dtors))
     KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
     KEEP (*(SORT(.dtors.*)))