[SOLVED] smartlinking with LD
lazarus / 64-FPC development

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Key-Real · 2024-07-16 09:39

i have the tf_smartlink_sections in tsysteminfo.flags
he make me:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i .section
.text.n_si_prc_$$__fpc_proc_start$$longint,"ax"
so my section name is .text.n_si_prc_$$__fpc_proc_start$$longint

that's good

my linker.ld is:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i MEMORY{   
   ram (rwx) : ORIGIN = 0x80010000, LENGTH = 2M -
64K}STARTUP(./rtl/ps1/si_prc.o)SECTIONS{        .text : ALIGN(8) {   
           __exe_start__ = .;                __text_start__ = .;     
         *(.text .text.*)                __text_end__ = .;           
   __text_size__ = __text_start__ - __text_end__;        } > ram     
  .rodata : ALIGN(8) {                __rdata_start__ = .;           
   *(.rdata .rdata.* .rodata .rodata.*)                __rdata_end__ =
.;                __rdata_size__ = __rdata_end__ - __rdata_start__;  
    } > ram         .ctors : ALIGN(8) {                __ctors_start__
= .;                KEEP(*(.ctors))               
KEEP(*(SORT(.ctors.*)))                __ctors_end__ = .;            
  __ctors_size__ = __ctors_end__ - __ctors_start__;        } > ram   
    .dtors : ALIGN(8) {                __dtors_start__ = .;          
    KEEP(*(.dtors))                KEEP(*(SORT(.dtors.*)))           
   __dtors_end__ = .;                __dtors_size__ = __dtors_end__ -
__dtors_start__;        } > ram         .data : ALIGN(8) {           
   __sdata_start__ = .;                *(.sdata .sdata.*)            
  __sdata_end__ = .;                __sdata_size__ = __sdata_end__ -
__sdata_start__;                __data_start__ = .;               
*(.data .data.*)                SORT(CONSTRUCTORS)                . =
ALIGN(2048);                __data_end__ = .;               
__exe_end__ = .;                __data_size__ = __data_end__ -
__data_start__;        } > ram         __exe_size__ = __exe_end__ -
__exe_start__;         .sbss : ALIGN(64) {               
__sbss_start__ = .;                *(.sbss .sbss.*)               
__sbss_end__ = .;                __sbss_size__ = __sbss_end__ -
__sbss_start__;        } > ram         .bss : ALIGN(64) {            
  __bss_start__ = .;                *(.bss .bss.*)               
*(COMMON)                . = ALIGN(64);                __bss_end__ =
.;                __bss_size__ = __bss_end__ - __bss_start__;        }
> ram} 
If I link with
ld --gc-sections
he strips me ALL the text sections, here i have an empty .asm file
after dump

how to change the linker script?

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Key-Real · 2024-07-16 10:02

do i have to create a .text.[name] section for every function?

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Key-Real · 2024-07-16 10:53

If You wanna link with --gc-sections

use an ENTRYPOINT() and KEEP() derictives:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i MEMORY{   
   ram (rwx) : ORIGIN = 0x80010000, LENGTH = 2M -
64K}ENTRY(main)SECTIONS{        .text : ALIGN(8) {               
__exe_start__ = .;                __text_start__ = .;               
KEEP(*(.text.n_main));                *(.text .text.*)               
__text_end__ = .;                __text_size__ = __text_start__ -
__text_end__;        } > ram         .rodata : ALIGN(8) {            
  __rdata_start__ = .;                *(.rdata .rdata.* .rodata
.rodata.*)                __rdata_end__ = .;               
__rdata_size__ = __rdata_end__ - __rdata_start__;        } > ram     
  .ctors : ALIGN(8) {                __ctors_start__ = .;            
  KEEP(*(.ctors))                KEEP(*(SORT(.ctors.*)))             
 __ctors_end__ = .;                __ctors_size__ = __ctors_end__ -
__ctors_start__;        } > ram         .dtors : ALIGN(8) {          
    __dtors_start__ = .;                KEEP(*(.dtors))              
KEEP(*(SORT(.dtors.*)))                __dtors_end__ = .;            
  __dtors_size__ = __dtors_end__ - __dtors_start__;        } > ram   
    .data : ALIGN(8) {                __sdata_start__ = .;           
   *(.sdata .sdata.*)                __sdata_end__ = .;              
__sdata_size__ = __sdata_end__ - __sdata_start__;               
__data_start__ = .;                *(.data .data.*)               
SORT(CONSTRUCTORS)                . = ALIGN(2048);               
__data_end__ = .;                __exe_end__ = .;               
__data_size__ = __data_end__ - __data_start__;        } > ram        
__exe_size__ = __exe_end__ - __exe_start__;         .sbss : ALIGN(64)
{                __sbss_start__ = .;                *(.sbss .sbss.*) 
             __sbss_end__ = .;                __sbss_size__ =
__sbss_end__ - __sbss_start__;        } > ram         .bss : ALIGN(64)
{                __bss_start__ = .;                *(.bss .bss.*)    
          *(COMMON)                . = ALIGN(64);               
__bss_end__ = .;                __bss_size__ = __bss_end__ -
__bss_start__;        } > ram}