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gcc __attribute__((constructor)): Remove hacked calling, move ctor sections to flash

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More hacky moving of parts of .rodata to flash, until we can move all of
it.

Fix for #128
This commit is contained in:
Angus Gratton 2016-02-09 16:06:25 +11:00
parent 2badeed523
commit 660dc6d0f4
4 changed files with 33 additions and 46 deletions
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11
FreeRTOS/Source/portable/esp8266/port.c
View file

@ -178,9 +178,6 @@ void xPortSysTickHandle (void)
//OpenNMI();
}
static bool sdk_compat_initialised;
void sdk_compat_initialise(void);
/*
* See header file for description.
*/
@ -189,14 +186,6 @@ portBASE_TYPE xPortStartScheduler( void )
_xt_isr_attach(INUM_SOFT, SV_ISR);
_xt_isr_unmask(BIT(INUM_SOFT));
/* ENORMOUS HACK: Call the sdk_compat_initialise() function.
This can be removed happily once we have open source startup code.
*/
if(!sdk_compat_initialised) {
sdk_compat_initialised = true;
sdk_compat_initialise();
}
/* Initialize system tick timer interrupt and schedule the first tick. */
_xt_isr_attach(INUM_TICK, sdk__xt_timer_int);
_xt_isr_unmask(BIT(INUM_TICK));

9
core/app_main.c
View file

@ -407,6 +407,9 @@ void sdk_user_init_task(void *params) {
vTaskDelete(NULL);
}
extern void (*__init_array_start)(void);
extern void (*__init_array_end)(void);
// .Lfunc009 -- .irom0.text+0x5b4
static void user_start_phase2(void) {
uint8_t *buf;
@ -437,6 +440,12 @@ static void user_start_phase2(void) {
uart_flush_txfifo(0);
uart_flush_txfifo(1);
// Call gcc constructor functions
void (**ctor)(void);
for ( ctor = &__init_array_start; ctor != &__init_array_end; ++ctor) {
(*ctor)();
}
if (phy_info[0] != 5) {
// Bad version byte. Discard what we read and use default values
// instead.

14
core/sdk_compat.c
View file

@ -17,20 +17,6 @@ void IRAM *zalloc(size_t nbytes)
return calloc(1, nbytes);
}
extern void (*__init_array_start)(void);
extern void (*__init_array_end)(void);
/* Do things which should be done as part of the SDK startup code, but aren't.
TODO: Move into app_main.c
*/
void sdk_compat_initialise()
{
/* Call C++ constructors or C functions marked with __attribute__((constructor)) */
void (**p)(void);
for ( p = &__init_array_start; p != &__init_array_end; ++p)
(*p)();
}
/* UART RX function from Espressif SDK internals.
*
* Not part of published API.

45
ld/common.ld
View file

@ -139,13 +139,34 @@ SECTIONS
(except for libgcc which is matched above.)
*/
*(.literal .text .literal.* .text.*)
/* Anything explicitly marked as "irom" or "irom0" should go here */
*(.irom.* .irom.*.* .irom0.*)
_irom0_text_end = ABSOLUTE(.);
/* Temporary .rodata hacks start here, eventually all rodata will
be in irom by default */
/* mbedtls rodata */
*mbedtls.a:*.o(.rodata.* .rodata)
/* actual certificate in example (TEMPORARY HACK) */
*:cert.o(.rodata.* .rodata)
/* Anything explicitly marked as "irom" or "irom0" should go here */
*(.irom.* .irom.*.* .irom0.*)
_irom0_text_end = ABSOLUTE(.);
/* 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.*)))
KEEP (*(.dtors))
/* C++ exception handlers table: */
__XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
*(.xt_except_desc)
*(.gnu.linkonce.h.*)
__XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
*(.xt_except_desc_end)
} >irom0_0_seg :irom0_0_phdr
.data : ALIGN(4)
@ -179,23 +200,6 @@ SECTIONS
*(.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.*)))
KEEP (*(.dtors))
/* C++ exception handlers table: */
__XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
*(.xt_except_desc)
*(.gnu.linkonce.h.*)
__XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
*(.xt_except_desc_end)
*(.dynamic)
*(.gnu.version_d)
. = ALIGN(4); /* this table MUST be 4-byte aligned */
@ -230,7 +234,6 @@ SECTIONS
} >dram0_0_seg :dram0_0_bss_phdr
/* __stack = 0x3ffc8000; */
.lit4 : ALIGN(4)
{
_lit4_start = ABSOLUTE(.);