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/*
At this entry point, most registers' values are unspecified, except:
a1 Contains a function pointer to be registered with `atexit'.
This is how the dynamic linker arranges to have DT_FINI
functions called for shared libraries that have been loaded
before this code runs.
sp The stack contains the arguments and environment:
0(sp) argc
4(sp) argv[0]
...
(4*argc)(sp) NULL
(4*(argc+1))(sp) envp[0]
...
NULL
*/
.text
.globl _start
.type _start,#function
_start:
/* Clear the frame pointer since this is the outermost frame. */
mov fp, #0
ldmia sp!, {a2}
/* Pop argc off the stack and save a pointer to argv */
ldr ip,=operatingsystem_parameter_argc
ldr a3,=operatingsystem_parameter_argv
str a2,[ip]
/* calc envp */
add a2,a2,#1
add a2,sp,a2,LSL #2
ldr ip,=operatingsystem_parameter_envp
str sp,[a3]
str a2,[ip]
ldr r1,=_etext /* Initialize gmon */
ldr r0,=_start
bl monstartup
ldr r0,=_mcleanup
bl atexit
/* Save initial stackpointer */
ldr ip,=__stkptr
str sp,[ip]
/* align sp again to 8 byte boundary, needed by eabi */
sub sp,sp,#4
/* Let the libc call main and exit with its return code. */
bl PASCALMAIN
.globl _haltproc
.type _haltproc,#function
_haltproc:
/* r0 contains exitcode */
swi 0x900001
b _haltproc
.globl _haltproc_eabi
.type _haltproc_eabi,#function
_haltproc_eabi:
/* r0 contains exitcode */
mov r7,#248
swi 0x0
b _haltproc_eabi
/* Define a symbol for the first piece of initialized data. */
.data
.globl __data_start
__data_start:
.long 0
.weak data_start
data_start = __data_start
.bss
.comm __stkptr,4
.comm operatingsystem_parameter_envp,4
.comm operatingsystem_parameter_argc,4
.comm operatingsystem_parameter_argv,4
.section ".comment"
.byte 0
.ascii "generated by FPC http://www.freepascal.org\0"
/* We need this stuff to make gdb behave itself, otherwise
gdb will chokes with SIGILL when trying to debug apps.
*/
.section ".note.ABI-tag", "a"
.align 4
.long 1f - 0f
.long 3f - 2f
.long 1
0: .asciz "GNU"
1: .align 4
2: .long 0
.long 2,0,0
3: .align 4
.section .note.GNU-stack,"",%progbits
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