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- # File to either setup register 2 to point to the GOT, or to adjust the
- # pointers in the .got2 section to point to their new addresses.
-
- .file "eabi.asm"
- .section ".text"
- .globl __eabi
-
- .section ".got2","aw"
- .LCTOC1 = . # +32768
-
- # Table of addresses
- .Ltable = .-.LCTOC1
- .long .LCTOC1 # address we are really at
-
- .Lgot = .-.LCTOC1
- .long _GLOBAL_OFFSET_TABLE_ # normal GOT address
-
- .Lgots = .-.LCTOC1
- .long _GOT_START_ # start of .got section
-
- .Lgote = .-.LCTOC1
- .long _GOT_END_ # end of .got section
-
- .Lgot2s = .-.LCTOC1
- .long _GOT2_START_ # -mrelocatable GOT pointers start
-
- .Lgot2e = .-.LCTOC1
- .long _GOT2_END_ # -mrelocatable GOT pointers end
-
- .text
- .Lptr:
- .long .LCTOC1-.Laddr # PC relative pointer to .got2
- .long 0x4000 # traceback table
-
- __eabi: mflr 0
- bl .Laddr # get current address
- .Laddr:
- mflr 12 # real address of .Laddr
- lwz 11,(.Lptr-.Laddr)(12) # linker generated address of .LCTOC1
- add 11,11,12 # correct to real pointer
- lwz 12,.Ltable(11) # get linker's idea of where .Laddr is
- subf. 12,12,11 # calculate difference
- mtlr 0 # restore link register
- bc 4,2,.Lreloc # skip if we need to relocate
-
- # Only load up register 2 if there is a .got section
-
- lwz 3,.Lgots(11) # start of .got section
- lwz 4,.Lgote(11) # end of .got section
- cmpw 1,3,4 # .got section non-empty?
- bc 12,6,.Ldone
-
- # Normal program, load up register 2
-
- lwz 2,.Lgot(11) # normal GOT address
- b __do_global_ctors # do any C++ global constructors (which returns to caller)
-
- # We need to relocate the .got2 pointers. Don't load register 2
-
- .Lreloc:
- lwz 3,.Lgot2s(11) # GOT pointers start
- lwz 4,.Lgot2e(11) # GOT pointers end
- add 3,12,3 # adjust pointers
- add 4,12,4
-
- cmpw 1,3,4 # any pointers to adjust
- bc 12,6,.Ldone
-
- .Lloop:
- lwz 11,0(3) # next pointer
- add 11,11,12 # adjust
- stw 11,0(3)
- addi 3,3,4 # bump to next word
- cmpw 1,3,4 # more pointers to adjust?
- bc 4,6,.Lloop
-
- # Done adjusting pointers, return
-
- .Ldone:
- b __do_global_ctors # do any C++ global constructors (which returns to caller)
-
- # Routines for saving floating point registers, called by the compiler.
- # Called with r11 pointing to the stack header word of the caller of the
- # function, just beyond the end of the floating point save area.
-
- .globl _savefpr_14_l
- .globl _savefpr_15_l
- .globl _savefpr_16_l
- .globl _savefpr_17_l
- .globl _savefpr_18_l
- .globl _savefpr_19_l
- .globl _savefpr_20_l
- .globl _savefpr_21_l
- .globl _savefpr_22_l
- .globl _savefpr_23_l
- .globl _savefpr_24_l
- .globl _savefpr_25_l
- .globl _savefpr_26_l
- .globl _savefpr_27_l
- .globl _savefpr_28_l
- .globl _savefpr_29_l
- .globl _savefpr_30_l
- .globl _savefpr_31_l
-
- .long 0x00400000 # traceback tag
- _savefpr_14_l: stfd 14,-144(11) # save fp registers
- _savefpr_15_l: stfd 15,-136(11)
- _savefpr_16_l: stfd 16,-128(11)
- _savefpr_17_l: stfd 17,-120(11)
- _savefpr_18_l: stfd 18,-112(11)
- _savefpr_19_l: stfd 19,-104(11)
- _savefpr_20_l: stfd 20,-96(11)
- _savefpr_21_l: stfd 21,-88(11)
- _savefpr_22_l: stfd 22,-80(11)
- _savefpr_23_l: stfd 23,-72(11)
- _savefpr_24_l: stfd 24,-64(11)
- _savefpr_25_l: stfd 25,-56(11)
- _savefpr_26_l: stfd 26,-48(11)
- _savefpr_27_l: stfd 27,-40(11)
- _savefpr_28_l: stfd 28,-32(11)
- _savefpr_29_l: stfd 29,-24(11)
- _savefpr_30_l: stfd 30,-16(11)
- _savefpr_31_l: stfd 31,-8(11)
- stw 0,4(11) # save return address also
- blr
-
-
- # Routines for restoring floating point registers, called by the compiler.
- # Called with r11 pointing to the stack header word of the caller of the
- # function, just beyond the end of the floating point save area.
-
- .globl _restfpr_14_l
- .globl _restfpr_15_l
- .globl _restfpr_16_l
- .globl _restfpr_17_l
- .globl _restfpr_18_l
- .globl _restfpr_19_l
- .globl _restfpr_20_l
- .globl _restfpr_21_l
- .globl _restfpr_22_l
- .globl _restfpr_23_l
- .globl _restfpr_24_l
- .globl _restfpr_25_l
- .globl _restfpr_26_l
- .globl _restfpr_27_l
- .globl _restfpr_28_l
- .globl _restfpr_29_l
- .globl _restfpr_30_l
- .globl _restfpr_31_l
-
- .long 0x00600000 # traceback tag
- _restfpr_14_l: lfd 14,-144(11) # restore fp registers
- _restfpr_15_l: lfd 15,-136(11)
- _restfpr_16_l: lfd 16,-128(11)
- _restfpr_17_l: lfd 17,-120(11)
- _restfpr_18_l: lfd 18,-112(11)
- _restfpr_19_l: lfd 19,-104(11)
- _restfpr_20_l: lfd 20,-96(11)
- _restfpr_21_l: lfd 21,-88(11)
- _restfpr_22_l: lfd 22,-80(11)
- _restfpr_23_l: lfd 23,-72(11)
- _restfpr_24_l: lfd 24,-64(11)
- _restfpr_25_l: lfd 25,-56(11)
- _restfpr_26_l: lfd 26,-48(11)
- _restfpr_27_l: lfd 27,-40(11)
- _restfpr_28_l: lfd 28,-32(11)
- _restfpr_29_l: lfd 29,-24(11)
- _restfpr_30_l: lfd 30,-16(11)
- _restfpr_31_l: lwz 0,4(11) # caller's caller address
- lfd 31,-8(11)
- mtlr 0
- mr 1,11
- blr
-