mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-08-06 23:46:04 +02:00
* forgot to commit ppc64 gprt0.as used for gprof support
* fixed ppc64 exception mask stuff (same as 3136 for ppc32) git-svn-id: trunk@3298 -
This commit is contained in:
tom_at_work
parent
d98336156f
commit
a9df7aa81a
@ -1,4 +1,441 @@
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/*
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/*
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*/
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* Startup code for programs linked with GNU libc, PowerPC64
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* version.
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/* empty */
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*
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* Adapted from the glibc-sources (2.3.5) in the file
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*
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* sysdeps/powerpc/powerpc64/elf/start.S
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*
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* Original header follows.
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*/
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/* Startup code for programs linked with GNU libc. PowerPC64 version.
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Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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. See the GNU
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|
Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* some macros which simplify the startup code */
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/* load the 64 bit value "value" into register ra */
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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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|
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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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|
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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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||||||
|
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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
|
||||||
|
* 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
|
||||||
|
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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||||||
|
/* The _restvr_M routines restore the vector registers from vM to v31. When the
|
||||||
|
* routine is called, r0 must point to the word just beyound the end of the
|
||||||
|
* vector register save area. On return the value of r0 is unchanged while r12
|
||||||
|
* may be modified.
|
||||||
|
*/
|
||||||
|
/* 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
|
||||||
|
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
|
||||||
|
lvx v24,r12,r0
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||||||
|
_restvr_25: addi r12,r0,-112
|
||||||
|
lvx v25,r12,r0
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||||||
|
_restvr_26: addi r12,r0,-96
|
||||||
|
lvx v26,r12,r0
|
||||||
|
_restvr_27: addi r12,r0,-80
|
||||||
|
lvx v27,r12,r0
|
||||||
|
_restvr_28: addi r12,r0,-64
|
||||||
|
lvx v28,r12,r0
|
||||||
|
_restvr_29: addi r12,r0,-48
|
||||||
|
lvx v29,r12,r0
|
||||||
|
_restvr_30: addi r12,r0,-32
|
||||||
|
lvx v30,r12,r0
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||||||
|
_restvr_31: addi r12,r0,-16
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||||||
|
lvx v31,r12,r0
|
||||||
|
blr
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||||||
|
*/
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||||||
|
|
||||||
|
/*
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||||||
|
* start_addresses is a structure containing the real
|
||||||
|
* entry point (next to other things not interesting to
|
||||||
|
* us here).
|
||||||
|
*
|
||||||
|
* All references in the struct are function descriptors
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
.section ".rodata"
|
||||||
|
.align 3
|
||||||
|
start_addresses:
|
||||||
|
.quad 0 /* was _SDA_BASE_ but not in 64-bit ABI*/
|
||||||
|
.quad main_stub
|
||||||
|
.quad __libc_csu_init
|
||||||
|
.quad __libc_csu_fini
|
||||||
|
.size start_adresses, .-start_addresses
|
||||||
|
|
||||||
|
/*
|
||||||
|
* the real entry point for the program
|
||||||
|
*/
|
||||||
|
FUNCTION_PROLOG _start
|
||||||
|
mr 9,1 /* save the stack pointer */
|
||||||
|
|
||||||
|
/* Set up an initial stack frame, and clear the LR. */
|
||||||
|
|
||||||
|
clrrdi 1,1,4
|
||||||
|
li 0,0
|
||||||
|
stdu 1,-128(1)
|
||||||
|
mtlr 0
|
||||||
|
std 0,0(1)
|
||||||
|
|
||||||
|
/* put the address of start_addresses in r8... */
|
||||||
|
/* PPC64 ABI uses R13 for thread local, so we leave it alone */
|
||||||
|
LOAD_64BIT_VAL 8, start_addresses
|
||||||
|
|
||||||
|
b .__libc_start_main
|
||||||
|
nop /* a NOP for the linker */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* This is our FreePascal main procedure which is called by
|
||||||
|
* libc after initializing.
|
||||||
|
*/
|
||||||
|
|
||||||
|
FUNCTION_PROLOG main_stub
|
||||||
|
mflr 0
|
||||||
|
std 0,16(1)
|
||||||
|
stdu 1,-128(1)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 8, operatingsystem_parameter_argc
|
||||||
|
stw 3,0(8)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 8, operatingsystem_parameter_argv
|
||||||
|
std 4,0(8)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 8, operatingsystem_parameter_envp
|
||||||
|
std 5,0(8)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 8, __stkptr
|
||||||
|
std 1,0(8)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 8, ___fpc_ret
|
||||||
|
std 1,0(8)
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 3, _start
|
||||||
|
ld 3, 0(3)
|
||||||
|
LOAD_64BIT_VAL 4, etext
|
||||||
|
bl .__monstartup
|
||||||
|
nop
|
||||||
|
|
||||||
|
LOAD_64BIT_VAL 3, _mcleanup
|
||||||
|
bl .atexit
|
||||||
|
nop
|
||||||
|
|
||||||
|
bl .PASCALMAIN
|
||||||
|
nop
|
||||||
|
|
||||||
|
b ._haltproc
|
||||||
|
|
||||||
|
FUNCTION_PROLOG _haltproc
|
||||||
|
LOAD_64BIT_VAL 8, ___fpc_ret
|
||||||
|
ld 1, 0(8)
|
||||||
|
addi 1, 1, 128
|
||||||
|
ld 0, 16(1)
|
||||||
|
mtlr 0
|
||||||
|
blr
|
||||||
|
|
||||||
|
/* Define a symbol for the first piece of initialized data. */
|
||||||
|
.section ".data"
|
||||||
|
.globl __data_start
|
||||||
|
__data_start:
|
||||||
|
data_start:
|
||||||
|
|
||||||
|
___fpc_ret: /* return address to libc */
|
||||||
|
.quad 0
|
||||||
|
|
||||||
|
.text
|
||||||
|
.comm __stkptr, 8
|
||||||
|
|
||||||
|
.comm operatingsystem_parameter_argc, 4
|
||||||
|
.comm operatingsystem_parameter_argv, 8
|
||||||
|
.comm operatingsystem_parameter_envp, 8
|
||||||
|
|||||||
@ -21,6 +21,7 @@ const
|
|||||||
UnderflowMask = %00100000;
|
UnderflowMask = %00100000;
|
||||||
ZeroDivideMask = %00010000;
|
ZeroDivideMask = %00010000;
|
||||||
InexactMask = %00001000;
|
InexactMask = %00001000;
|
||||||
|
ExceptionsPendingMask = %11111111111111100000011100000000;
|
||||||
|
|
||||||
ExceptionMask = InvalidOperationMask or OverflowMask or UnderflowMask or ZeroDivideMask or InexactMask;
|
ExceptionMask = InvalidOperationMask or OverflowMask or UnderflowMask or ZeroDivideMask or InexactMask;
|
||||||
|
|
||||||
@ -29,14 +30,14 @@ const
|
|||||||
function getFPSCR : DWord; assembler; nostackframe;
|
function getFPSCR : DWord; assembler; nostackframe;
|
||||||
asm
|
asm
|
||||||
mffs f0
|
mffs f0
|
||||||
stfd f0, -8(r1)
|
stfd f0, -12(r1)
|
||||||
ld r3, -8(r1)
|
lwz r3, -8(r1)
|
||||||
end;
|
end;
|
||||||
|
|
||||||
procedure setFPSCR(newFPSCR : DWord); assembler; nostackframe;
|
procedure setFPSCR(newFPSCR : DWord); assembler; nostackframe;
|
||||||
asm
|
asm
|
||||||
std r3, -8(r1)
|
stw r3, -8(r1)
|
||||||
lfd f0, -8(r1)
|
lfd f0, -12(r1)
|
||||||
mtfsf 255, f0
|
mtfsf 255, f0
|
||||||
end;
|
end;
|
||||||
|
|
||||||
@ -80,15 +81,15 @@ end;
|
|||||||
function GetExceptionMask: TFPUExceptionMask;
|
function GetExceptionMask: TFPUExceptionMask;
|
||||||
begin
|
begin
|
||||||
result := [];
|
result := [];
|
||||||
if ((getFPSCR and InvalidOperationMask) <> 0) then
|
if ((getFPSCR and InvalidOperationMask) = 0) then
|
||||||
result := result + [exInvalidOp];
|
result := result + [exInvalidOp];
|
||||||
if ((getFPSCR and OverflowMask) <> 0) then
|
if ((getFPSCR and OverflowMask) = 0) then
|
||||||
result := result + [exOverflow];
|
result := result + [exOverflow];
|
||||||
if ((getFPSCR and UnderflowMask) <> 0) then
|
if ((getFPSCR and UnderflowMask) = 0) then
|
||||||
result := result + [exUnderflow];
|
result := result + [exUnderflow];
|
||||||
if ((getFPSCR and ZeroDivideMask) <> 0) then
|
if ((getFPSCR and ZeroDivideMask) = 0) then
|
||||||
result := result + [exZeroDivide];
|
result := result + [exZeroDivide];
|
||||||
if ((getFPSCR and InexactMask) <> 0) then
|
if ((getFPSCR and InexactMask) = 0) then
|
||||||
result := result + [exPrecision];
|
result := result + [exPrecision];
|
||||||
end;
|
end;
|
||||||
|
|
||||||
@ -108,7 +109,7 @@ begin
|
|||||||
if (exPrecision in Mask) then
|
if (exPrecision in Mask) then
|
||||||
mode := mode or InexactMask;
|
mode := mode or InexactMask;
|
||||||
|
|
||||||
setFPSCR((getFPSCR and (not ExceptionMask)) or mode);
|
setFPSCR((getFPSCR or ExceptionMask) and not mode and not ExceptionsPendingMask);
|
||||||
result := Mask - [exDenormalized];
|
result := Mask - [exDenormalized];
|
||||||
end;
|
end;
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user