# Mac OS PEF File

Assembler code

```
seg000:00002BDC
seg000:00002BDC # =============== S U B R O U T I N E =======================================
seg000:00002BDC
seg000:00002BDC # Attributes: noreturn
seg000:00002BDC
seg000:00002BDC                 .globl .start
seg000:00002BDC .start:                                 # DATA XREF: seg000:00003A60↓o
seg000:00002BDC                                         # seg001:start↓o
seg000:00002BDC
seg000:00002BDC .set sender_sp, -0x450
seg000:00002BDC .set saved_toc, -0x43C
seg000:00002BDC .set var_20, -0x20
seg000:00002BDC .set var_C, -0xC
seg000:00002BDC .set var_8, -8
seg000:00002BDC .set var_4, -4
seg000:00002BDC .set sender_lr,  8
seg000:00002BDC
seg000:00002BDC                 mflr      r0
seg000:00002BE0                 stw       r31, var_4(r1)
seg000:00002BE4                 stw       r30, var_8(r1)
seg000:00002BE8                 stw       r29, var_C(r1)
seg000:00002BEC                 stw       r0, sender_lr(r1)
seg000:00002BF0                 stwu      r1, sender_sp(r1)
seg000:00002BF4                 mr        r29, r3
seg000:00002BF8                 mr        r30, r4
seg000:00002BFC                 mr        r31, r5
seg000:00002C00                 lwz       r3, TC_argv_save # argv_save
seg000:00002C04                 cmplwi    r31, 0
seg000:00002C08                 lwz       r4, TC_environ # environ
seg000:00002C0C                 stw       r30, 0(r3)
seg000:00002C10                 stw       r31, 0(r4)
seg000:00002C14                 bne       loc_2C20
seg000:00002C18                 addi      r0, r2, (off_3E44 - 0x3A70) # "NO_ENVIRON=true"
seg000:00002C1C                 stw       r0, 0(r4)
seg000:00002C20
seg000:00002C20 loc_2C20:                               # CODE XREF: .start+38↑j
seg000:00002C20                 li        r3, 0
```


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