Description: Adjust startup code for glibc 2.34
 Based on the corresponding changes made in glibc:
 https://sourceware.org/git/?p=glibc.git;a=commit;h=035c012e32c11e84d64905efaf55e74f704d3668
Bug: https://gitlab.com/freepascal.org/fpc/source/-/issues/39295
Author: Graham Inggs <ginggs@debian.org>
Last-Update: 2022-08-12

--- a/fpcsrc/rtl/linux/powerpc64/cprt0.as
+++ b/fpcsrc/rtl/linux/powerpc64/cprt0.as
@@ -351,8 +351,8 @@
 start_addresses:
     .quad   0 /* was _SDA_BASE_  but not in 64-bit ABI*/
     .quad   main_stub
-    .quad   __libc_csu_init
-    .quad   __libc_csu_fini
+    .quad   0
+    .quad   0
     .size   start_adresses, .-start_addresses
 
 /*
--- a/fpcsrc/rtl/linux/powerpc64/gprt0.as
+++ b/fpcsrc/rtl/linux/powerpc64/gprt0.as
@@ -351,8 +351,8 @@
 start_addresses:
     .quad   0 /* was _SDA_BASE_  but not in 64-bit ABI*/
     .quad   main_stub
-    .quad   __libc_csu_init
-    .quad   __libc_csu_fini
+    .quad   0
+    .quad   0
     .size   start_adresses, .-start_addresses
 
 /*
--- a/fpcsrc/rtl/linux/aarch64/cprt0.as
+++ b/fpcsrc/rtl/linux/aarch64/cprt0.as
@@ -41,10 +41,8 @@
 	                     init, fini, rtld_fini, stack_end) */
 	adrp	x0,:got:PASCALMAIN
 	ldr	x0,[x0,#:got_lo12:PASCALMAIN]
-	adrp	x3,:got:__libc_csu_init
-	ldr	x3,[x3,#:got_lo12:__libc_csu_init]
-	adrp	x4,:got:__libc_csu_fini
-	ldr	x4,[x4,#:got_lo12:__libc_csu_fini]
+	mov	x3, #0
+	mov	x4, #0
 	bl	__libc_start_main
 
 	/* This should never happen */
--- a/fpcsrc/rtl/linux/i386/si_c21.inc
+++ b/fpcsrc/rtl/linux/i386/si_c21.inc
@@ -35,8 +35,6 @@
 
 {$asmmode att}
 
-procedure __libc_csu_init; cdecl; external;
-procedure __libc_csu_fini; cdecl; external;
 procedure libc_start_main; external name '__libc_start_main';
 procedure libc_exit(code: longint); cdecl; external name 'exit';
 
@@ -93,8 +91,8 @@
         pushl %esp   			{ stack_end }
         pushl %edx   			{ function to be registered with
                       			  atexit(), passed by loader }
-        pushl $__libc_csu_fini
-        pushl $__libc_csu_init
+        pushl $0
+        pushl $0
         pushl %esi                      { Push second argument: argv.  }
         pushl %ecx                      { Push first argument: argc.  }
 
--- a/fpcsrc/rtl/linux/x86_64/cprt0.as
+++ b/fpcsrc/rtl/linux/x86_64/cprt0.as
@@ -61,9 +61,8 @@
 	   which grow downwards).  */
 	pushq %rsp
 
-	/* Pass address of our own entry points to .fini and .init.  */
-	movq __libc_csu_init@GOTPCREL(%rip), %rcx
-	movq __libc_csu_fini@GOTPCREL(%rip), %r8
+	xorl %r8d, %r8d
+	xorl %ecx, %ecx
 
 	movq main_stub@GOTPCREL(%rip), %rdi
 
--- a/fpcsrc/rtl/linux/arm/cprt0.as
+++ b/fpcsrc/rtl/linux/arm/cprt0.as
@@ -82,10 +82,10 @@
 
         /* Set up the other arguments in registers */
         ldr a1, =PASCALMAIN
-        ldr a4, =_init
+        ldr a4, = #0
 
         /* Push fini */
-        str ip, [sp, #-4]!
+        str a4, [sp, #-4]!
 
         /* __libc_start_main (main, argc, argv, init, fini, rtld_fini, stack_end) */
 
--- a/fpcsrc/rtl/linux/powerpc64/si_g.inc
+++ b/fpcsrc/rtl/linux/powerpc64/si_g.inc
@@ -657,9 +657,6 @@
                           Process start/halt
  ******************************************************************************}
 
-procedure __libc_csu_init; cdecl; external;
-procedure __libc_csu_fini; cdecl; external;
-
 procedure __libc_start_main(r3,r4,r5,r6,r7,r8,r9: pointer); cdecl; external;
 
 type
@@ -745,8 +742,8 @@
   end
   = (sda_base: nil; {* was _SDA_BASE_  but not in 64-bit ABI }
      main: @main_stub;
-     libc_csu_init: @__libc_csu_init;
-     libc_csu_fini: @__libc_csu_fini
+     libc_csu_init: pointer(0);
+     libc_csu_fini: pointer(0)
     );
 
 procedure call_libc_start_main(r3,r4,r5,r6,r7,r8,r9: pointer); cdecl;
--- a/fpcsrc/rtl/linux/powerpc64/si_c.inc
+++ b/fpcsrc/rtl/linux/powerpc64/si_c.inc
@@ -657,9 +657,6 @@
                           Process start/halt
  ******************************************************************************}
 
-procedure __libc_csu_init; cdecl; external;
-procedure __libc_csu_fini; cdecl; external;
-
 procedure __libc_start_main(r3,r4,r5,r6,r7,r8,r9: pointer); cdecl; external;
 
 var
@@ -724,8 +721,8 @@
   end
   = (sda_base: nil; {* was _SDA_BASE_  but not in 64-bit ABI }
      main: @main_stub;
-     libc_csu_init: @__libc_csu_init;
-     libc_csu_fini: @__libc_csu_fini
+     libc_csu_init: pointer(0);
+     libc_csu_fini: pointer(0)
     );
 
 
--- a/fpcsrc/rtl/linux/powerpc/cprt0.as
+++ b/fpcsrc/rtl/linux/powerpc/cprt0.as
@@ -35,8 +35,8 @@
 start_addresses:
     .long     _SDA_BASE_
     .long     main_stub
-    .long     __libc_csu_init
-    .long     __libc_csu_fini
+    .long     0
+    .long     0
     .size   start_adresses, .-start_addresses
 
     .section ".text"
--- a/fpcsrc/rtl/linux/mips/cprt0.as
+++ b/fpcsrc/rtl/linux/mips/cprt0.as
@@ -113,10 +113,9 @@
  and $29, -2 * 4
  subu $29, 32
 
- lw $7,%got(__libc_csu_init)($gp) /* init */
- lw $8,%got(__libc_csu_fini)($gp) /* fini */
+ move $7, $0
 
- sw $8, 16($29)				/* fini */
+ sw $0, 16($29)
  sw $2, 20($29)				/* rtld_fini */
  sw $29, 24($29)			/* stack_end */
 
--- a/fpcsrc/rtl/linux/m68k/cprt0.as
+++ b/fpcsrc/rtl/linux/m68k/cprt0.as
@@ -41,8 +41,10 @@
 
         pea      (%sp)         /* highest available stack address */
         pea      (%a1)         /* termination function provided by kernel */
-        pea      __libc_csu_fini
-        pea      __libc_csu_init
+
+        clr.l    -(%sp)
+        clr.l    -(%sp)
+
         pea      (%a0)         /* argv */
         move.l   %d0,-(%sp)    /* argc */
         pea      PASCALMAIN