c6ceaac1af
Because I'm lazy, I didn't make another copy of _hol0.s; I am building plat/linux/libsys/_hol0.s for OS X.
59 lines
1 KiB
ArmAsm
59 lines
1 KiB
ArmAsm
! boot.s for osxppc
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! Declare segments (the order is important).
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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.sect .text
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begtext:
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! This code is placed at the entry point of the Mach-o
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! executable and is the first thing that runs.
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!
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! On entry, the stack looks like this:
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!
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! sp+... NULL
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! sp+8+(4*argc) env (X quads)
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! sp+4+(4*argc) NULL
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! sp+4 argv (argc quads)
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! sp argc
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!
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! The ACK actually expects:
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!
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! sp+8 argc
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! sp+4 ptr to argv
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! sp ptr to env
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lwz r3, 0(sp) ! r3 = argc
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addi r4, sp, 4 ! r4 = argv
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srwi r5, r3, 2
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add r5, r5, r4
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addi r5, r5, 8 ! r5 = env
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stwu r5, -4(sp)
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stwu r4, -4(sp)
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stwu r3, -4(sp)
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b __m_a_i_n
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.sect .rom
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begrom:
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.sect .data
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begdata:
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! Some magic data. All EM systems need these.
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.sect .bss
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begbss:
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.define _errno
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.comm _errno, 4 ! Posix errno storage
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.define .trppc, .ignmask
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.comm .trppc, 4 ! ptr to user trap handler
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.comm .ignmask, 4 ! user trap ignore mask
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