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https://gitlab.com/freepascal.org/fpc/source.git
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94f2b1d941
PASCALMAIN is called so the main body framepointer is seen as
a valid pointer with backtracing
git-svn-id: trunk@2266 -
379 lines
10 KiB
ActionScript
379 lines
10 KiB
ActionScript
/*
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* This file is part of the Free Pascal run time library.
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* Copyright (c) 2005 by Thomas Schatzl,
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* member of the Free Pascal development team.
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*
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* Startup code for normal programs, PowerPC64 version.
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*
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* See the file COPYING.FPC, included in this distribution,
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* for details about the copyright.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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.macro LOAD_64BIT_VAL ra, value
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lis \ra,\value@highest
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ori \ra,\ra,\value@higher
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sldi \ra,\ra,32
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oris \ra,\ra,\value@h
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ori \ra,\ra,\value@l
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.endm
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/* create function prolog for symbol "fn" */
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.macro FUNCTION_PROLOG fn
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.section ".text"
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.align 2
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.globl \fn
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.section ".opd", "aw"
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.align 3
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\fn:
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.quad .\fn, .TOC.@tocbase, 0
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.previous
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.size \fn, 24
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.type \fn, @function
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.globl .\fn
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.\fn:
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.endm
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/*
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* "ptrgl" glue code for calls via pointer. This function
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* sequence loads the data from the function descriptor
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* referenced by R11 into the CTR register (function address),
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* R2 (GOT/TOC pointer), and R11 (the outer frame pointer).
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*
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* On entry, R11 must be set to point to the function descriptor.
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*
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* See also the 64-bit PowerPC ABI specification for more
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* information, chapter 3.5.11 (in v1.7).
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*/
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.section ".text"
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.align 3
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.globl .ptrgl
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.ptrgl:
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ld 0, 0(11)
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std 2, 40(1)
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mtctr 0
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ld 2, 8(11)
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ld 11, 8(11)
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bctr
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.long 0
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.byte 0, 12, 128, 0, 0, 0, 0, 0
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.type .ptrgl, @function
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.size .ptrgl, . - .ptrgl
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/*
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* Function prolog/epilog helpers, which are part of the 64-bit
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* PowerPC ABI.
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*
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* See also the 64-bit PowerPC ABI specification for more
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* information, chapter 3.5.5, "Register saving and restoring
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* function" (in v1.7).
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*/
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/* Each _savegpr0_N routine saves the general registers from rN to r31,
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* inclusive. When the routine is called, r1 must point to the start
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* of the general register save area. R0 must contain the old LR on
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* entry.
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*/
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_savegpr0_14: std 14,-144(1)
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_savegpr0_15: std 15,-136(1)
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_savegpr0_16: std 16,-128(1)
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_savegpr0_17: std 17,-120(1)
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_savegpr0_18: std 18,-112(1)
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_savegpr0_19: std 19,-104(1)
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_savegpr0_20: std 20,-96(1)
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_savegpr0_21: std 21,-88(1)
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_savegpr0_22: std 22,-80(1)
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_savegpr0_23: std 23,-72(1)
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_savegpr0_24: std 24,-64(1)
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_savegpr0_25: std 25,-56(1)
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_savegpr0_26: std 26,-48(1)
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_savegpr0_27: std 27,-40(1)
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_savegpr0_28: std 28,-32(1)
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_savegpr0_29: std 29,-24(1)
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_savegpr0_30: std 30,-16(1)
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_savegpr0_31:
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std 31,-8(1)
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std 0, 16(1)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* Each _restgpr0_N routine restores the general registers from rN to r31,
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* inclusive. When the routine is called, r1 must point to the start
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* of the general register save area.
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*/
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_restgpr0_14: ld 14,-144(1)
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_restgpr0_15: ld 15,-136(1)
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_restgpr0_16: ld 16,-128(1)
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_restgpr0_17: ld 17,-120(1)
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_restgpr0_18: ld 18,-112(1)
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_restgpr0_19: ld 19,-104(1)
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_restgpr0_20: ld 20,-96(1)
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_restgpr0_21: ld 21,-88(1)
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_restgpr0_22: ld 22,-80(1)
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_restgpr0_23: ld 23,-72(1)
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_restgpr0_24: ld 24,-64(1)
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_restgpr0_25: ld 25,-56(1)
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_restgpr0_26: ld 26,-48(1)
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_restgpr0_27: ld 27,-40(1)
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_restgpr0_28: ld 28,-32(1)
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_restgpr0_29:
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ld 0, 16(1)
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ld 29,-24(1)
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mtlr 0
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ld 30,-16(1)
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ld 31,-8(1)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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_restgpr0_30: ld 30,-16(1)
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_restgpr0_31: ld 0, 16(1)
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ld 31,-8(1)
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mtlr 0
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* Each _savegpr1_N routine saves the general registers from rN to r31,
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* inclusive. When the routine is called, r12
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* must point to the start of the general register save area.
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*/
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_savegpr1_14: std 14,-144(12)
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_savegpr1_15: std 15,-136(12)
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_savegpr1_16: std 16,-128(12)
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_savegpr1_17: std 17,-120(12)
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_savegpr1_18: std 18,-112(12)
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_savegpr1_19: std 19,-104(12)
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_savegpr1_20: std 20,-96(12)
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_savegpr1_21: std 21,-88(12)
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_savegpr1_22: std 22,-80(12)
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_savegpr1_23: std 23,-72(12)
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_savegpr1_24: std 24,-64(12)
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_savegpr1_25: std 25,-56(12)
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_savegpr1_26: std 26,-48(12)
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_savegpr1_27: std 27,-40(12)
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_savegpr1_28: std 28,-32(12)
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_savegpr1_29: std 29,-24(12)
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_savegpr1_30: std 30,-16(12)
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_savegpr1_31: std 31,-8(12)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* The _restgpr1_N routines restore the general registers from rN to r31.
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* When the routine is called, r12 must point to the start of the general
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* register save area.
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*/
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_restgpr1_14: ld 14,-144(12)
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_restgpr1_15: ld 15,-136(12)
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_restgpr1_16: ld 16,-128(12)
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_restgpr1_17: ld 17,-120(12)
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_restgpr1_18: ld 18,-112(12)
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_restgpr1_19: ld 19,-104(12)
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_restgpr1_20: ld 20,-96(12)
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_restgpr1_21: ld 21,-88(12)
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_restgpr1_22: ld 22,-80(12)
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_restgpr1_23: ld 23,-72(12)
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_restgpr1_24: ld 24,-64(12)
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_restgpr1_25: ld 25,-56(12)
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_restgpr1_26: ld 26,-48(12)
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_restgpr1_27: ld 27,-40(12)
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_restgpr1_28: ld 28,-32(12)
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_restgpr1_29: ld 29,-24(12)
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_restgpr1_30: ld 30,-16(12)
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_restgpr1_31: ld 31,-8(12)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* Each _savefpr_M routine saves the floating point registers from fM to f31,
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* inclusive. When the routine is called, r1 must point to the start of the
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* floating point register save area, and r0 must contain the value of LR on
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* function entry.
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*/
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_savefpr_14: stfd 14,-144(1)
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_savefpr_15: stfd 15,-136(1)
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_savefpr_16: stfd 16,-128(1)
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_savefpr_17: stfd 17,-120(1)
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_savefpr_18: stfd 18,-112(1)
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_savefpr_19: stfd 19,-104(1)
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_savefpr_20: stfd 20,-96(1)
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_savefpr_21: stfd 21,-88(1)
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_savefpr_22: stfd 22,-80(1)
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_savefpr_23: stfd 23,-72(1)
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_savefpr_24: stfd 24,-64(1)
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_savefpr_25: stfd 25,-56(1)
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_savefpr_26: stfd 26,-48(1)
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_savefpr_27: stfd 27,-40(1)
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_savefpr_28: stfd 28,-32(1)
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_savefpr_29: stfd 29,-24(1)
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_savefpr_30: stfd 30,-16(1)
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_savefpr_31: stfd 31,-8(1)
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std 0, 16(1)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* The _restfpr_M routines restore the floating point registers from fM to f31.
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* When the routine is called, r1 must point to the start of the floating point
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* register save area.
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*/
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_restfpr_14: lfd 14,-144(1)
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_restfpr_15: lfd 15,-136(1)
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_restfpr_16: lfd 16,-128(1)
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_restfpr_17: lfd 17,-120(1)
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_restfpr_18: lfd 18,-112(1)
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_restfpr_19: lfd 19,-104(1)
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_restfpr_20: lfd 20,-96(1)
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_restfpr_21: lfd 21,-88(1)
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_restfpr_22: lfd 22,-80(1)
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_restfpr_23: lfd 23,-72(1)
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_restfpr_24: lfd 24,-64(1)
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_restfpr_25: lfd 25,-56(1)
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_restfpr_26: lfd 26,-48(1)
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_restfpr_27: lfd 27,-40(1)
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_restfpr_28: lfd 28,-32(1)
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_restfpr_29:
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ld 0, 16(1)
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lfd 29,-24(1)
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mtlr 0
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lfd 30,-16(1)
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lfd 31,-8(1)
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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_restfpr_30: lfd 30,-16(1)
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_restfpr_31:
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ld 0, 16(1)
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lfd 31,-8(1)
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mtlr 0
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blr
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.long 0
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.byte 0, 12, 64, 0, 0, 0, 0, 0
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/* Each _savevr_M routine saves the vector registers from vM to v31, inclusive.
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* When the routine is called, r0 must point to the word just beyound the end
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* of the vector register save area. On return the value of r0 is unchanged
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* while r12 may be modified.
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*/
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/* commented out for now, unused
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_savevr_20: addi r12,r0,-192
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stvx v20,r12,r0
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_savevr_21: addi r12,r0,-176
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stvx v21,r12,r0
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_savevr_22: addi r12,r0,-160
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stvx v22,r12,r0
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_savevr_23: addi r12,r0,-144
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stvx v23,r12,r0
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_savevr_24: addi r12,r0,-128
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stvx v24,r12,r0
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_savevr_25: addi r12,r0,-112
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stvx v25,r12,r0
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_savevr_26: addi r12,r0,-96
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stvx v26,r12,r0
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_savevr_27: addi r12,r0,-80
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stvx v27,r12,r0
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_savevr_28: addi r12,r0,-64
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stvx v28,r12,r0
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_savevr_29: addi r12,r0,-48
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stvx v29,r12,r0
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_savevr_30: addi r12,r0,-32
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stvx v30,r12,r0
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_savevr_31: addi r12,r0,-16
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stvx v31,r12,r0
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blr
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*/
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/* The _restvr_M routines restore the vector registers from vM to v31. When the
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* routine is called, r0 must point to the word just beyound the end of the
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* vector register save area. On return the value of r0 is unchanged while r12
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* may be modified.
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*/
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/* commented out for now, unused
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_restvr_20: addi r12,r0,-192
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lvx v20,r12,r0
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_restvr_21: addi r12,r0,-176
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lvx v21,r12,r0
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_restvr_22: addi r12,r0,-160
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lvx v22,r12,r0
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_restvr_23: addi r12,r0,-144
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lvx v23,r12,r0
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_restvr_24: addi r12,r0,-128
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lvx v24,r12,r0
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_restvr_25: addi r12,r0,-112
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lvx v25,r12,r0
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_restvr_26: addi r12,r0,-96
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lvx v26,r12,r0
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_restvr_27: addi r12,r0,-80
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lvx v27,r12,r0
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_restvr_28: addi r12,r0,-64
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lvx v28,r12,r0
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_restvr_29: addi r12,r0,-48
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lvx v29,r12,r0
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_restvr_30: addi r12,r0,-32
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lvx v30,r12,r0
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_restvr_31: addi r12,r0,-16
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lvx v31,r12,r0
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blr
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*/
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/*
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* Main program entry point label (function), called by the loader
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*/
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FUNCTION_PROLOG _start
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mr 26, 1 /* save stack pointer */
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/* Set up an initial stack frame, and clear the LR */
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clrrdi 1, 1, 5 /* align r1 */
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li 0, 0
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stdu 1,-128(1)
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mtlr 0
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std 0, 0(1) /* r1 = pointer to NULL value */
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/* store argument count (= 0(r1) )*/
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ld 3, 0(26)
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LOAD_64BIT_VAL 10, operatingsystem_parameter_argc
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stw 3, 0(10)
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/* calculate argument vector address and store (= 8(r1) + 8 ) */
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addi 4, 26, 8
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LOAD_64BIT_VAL 10, operatingsystem_parameter_argv
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std 4, 0(10)
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/* store environment pointer (= argv + (argc+1)* 8 ) */
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addi 5, 3, 1
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sldi 5, 5, 3
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add 5, 4, 5
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LOAD_64BIT_VAL 10, operatingsystem_parameter_envp
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std 5, 0(10)
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LOAD_64BIT_VAL 8, __stkptr
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std 1,0(8)
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bl .PASCALMAIN
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nop
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/* directly jump to exit procedure, not via the function pointer */
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b ._haltproc
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FUNCTION_PROLOG _haltproc
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/* exit call */
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li 0, 1
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sc
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b ._haltproc
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/* Define a symbol for the first piece of initialized data. */
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.section ".data"
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.globl __data_start
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__data_start:
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data_start:
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.text
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.comm __stkptr, 8
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.comm operatingsystem_parameter_argc, 4
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.comm operatingsystem_parameter_argv, 8
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.comm operatingsystem_parameter_envp, 8
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