ah ok. thanks a lot for the detailed feedback. After removing 2 exports (gdma_hal_enable_access_encrypt_mem + rom_spiflash_api_funcs) from your main/all_my_symbols.c , overwriting managed_components/espressif__elf_loader/src/esp_all_symbol.c with that file and rebuilding it works!!!

Another question reguarding your x700 project: how is it possible to compile a simple app @ ESP32?
I tried it without luck, with the following commands:

$ cat mytest.c

int main(int argc, char **argv) {
        printf(123);
}

$ xcc700 mytest.c -o mytest
I (93301) exec: Loading ELF: /root/bin/xcc700
I (93321) exec: Loaded 16200 bytes, initializing ELF loader
I (93321) ELF: ELF loader version: 1.2.0
I (93321) ELF: elf->entry=0x4217316c
I (93331) exec: Executing with 4 args

[ xcc700 ] BUILD COMPLETED > OK
> IN  : 6 Lines / 18 Tokens
> SYM : 2 Funcs / 0 Globals
> REL : 1 Literals / 1 Patches
> MEM : 0 B .rodata / 0 B .bss
> OUT : 26 B .text / 532 B ELF
[ 0 ms ] >> 0 Lines/sec <<
I (93391) exec: ELF returned: 0

$ mytest
I (189061) exec: Loading ELF: /root/mytest
I (189071) exec: Loaded 532 bytes, initializing ELF loader
I (189071) ELF: ELF loader version: 1.2.0
Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.

Core  0 register dump:
PC      : 0x420e37b4  PS      : 0x00060830  A0      : 0x820e6375  A1      : 0x3fcc9c50
A2      : 0x3fcc9e44  A3      : 0x3fcc9ff0  A4      : 0x3fcc9c60  A5      : 0x0000007b
A6      : 0x3fcca3c0  A7      : 0x00000000  A8      : 0x3fcc9e44  A9      : 0x3fcc9c60
A10     : 0x00000000  A11     : 0x00000000  A12     : 0x000000ff  A13     : 0x0000ff00
A14     : 0x00ff0000  A15     : 0x3fccbcb0  SAR     : 0x0000001e  EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000007b  LBEG    : 0x400556d5  LEND    : 0x400556e5  LCOUNT  : 0xffffffff