kc3-lang/libffi/src/powerpc/linux64.S

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• Hash : 000ecd01
  Author :
  Date : 2022-06-02T18:43:53
  

  powerpc64: fix build on gcc-12 (assembly requires AltiVec) (#719) Without the change build fails on powerpc64-gcc-12 as: src/powerpc/linux64_closure.S: Assembler messages: src/powerpc/linux64_closure.S:363: Error: unrecognized opcode: `lvx' It's a 90205f67 "rs6000: Fix bootstrap (libffi)" patch by Segher Boessenkool from gcc upstream repository. It's enough to get libffi build on powerpc64.

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• src/powerpc/linux64.S

• /* -----------------------------------------------------------------------
     sysv.h - Copyright (c) 2003 Jakub Jelinek <jakub@redhat.com>
  	    Copyright (c) 2008 Red Hat, Inc.
  
     PowerPC64 Assembly glue.
  
     Permission is hereby granted, free of charge, to any person obtaining
     a copy of this software and associated documentation files (the
     ``Software''), to deal in the Software without restriction, including
     without limitation the rights to use, copy, modify, merge, publish,
     distribute, sublicense, and/or sell copies of the Software, and to
     permit persons to whom the Software is furnished to do so, subject to
     the following conditions:
  
     The above copyright notice and this permission notice shall be included
     in all copies or substantial portions of the Software.
  
     THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     DEALINGS IN THE SOFTWARE.
     ----------------------------------------------------------------------- */
  
  #define LIBFFI_ASM
  #include <fficonfig.h>
  #include <ffi.h>
  
  	.machine altivec
  
  #ifdef POWERPC64
  	.hidden	ffi_call_LINUX64
  	.globl	ffi_call_LINUX64
  	.text
  	.cfi_startproc
  # if _CALL_ELF == 2
  ffi_call_LINUX64:
  #  ifndef __PCREL__
  	addis	%r2, %r12, .TOC.-ffi_call_LINUX64@ha
  	addi	%r2, %r2, .TOC.-ffi_call_LINUX64@l
  #  endif
  	.localentry ffi_call_LINUX64, . - ffi_call_LINUX64
  # else
  	.section	".opd","aw"
  	.align	3
  ffi_call_LINUX64:
  #  ifdef _CALL_LINUX
  	.quad	.L.ffi_call_LINUX64,.TOC.@tocbase,0
  	.type	ffi_call_LINUX64,@function
  	.text
  .L.ffi_call_LINUX64:
  #  else
  	.hidden	.ffi_call_LINUX64
  	.globl	.ffi_call_LINUX64
  	.quad	.ffi_call_LINUX64,.TOC.@tocbase,0
  	.size	ffi_call_LINUX64,24
  	.type	.ffi_call_LINUX64,@function
  	.text
  .ffi_call_LINUX64:
  #  endif
  # endif
  	mflr	%r0
  	std	%r28, -32(%r1)
  	std	%r29, -24(%r1)
  	std	%r30, -16(%r1)
  	std	%r31, -8(%r1)
  	std	%r7, 8(%r1)	/* closure, saved in cr field.  */
  	std	%r0, 16(%r1)
  
  	mr	%r28, %r1	/* our AP.  */
  	.cfi_def_cfa_register 28
  	.cfi_offset 65, 16
  	.cfi_offset 31, -8
  	.cfi_offset 30, -16
  	.cfi_offset 29, -24
  	.cfi_offset 28, -32
  
  	stdux	%r1, %r1, %r8
  	mr	%r31, %r6	/* flags, */
  	mr	%r30, %r5	/* rvalue, */
  	mr	%r29, %r4	/* function address.  */
  /* Save toc pointer, not for the ffi_prep_args64 call, but for the later
     bctrl function call.  */
  # if _CALL_ELF == 2
  	std	%r2, 24(%r1)
  # else
  	std	%r2, 40(%r1)
  # endif
  
  	/* Call ffi_prep_args64.  */
  	mr	%r4, %r1
  # if defined _CALL_LINUX || _CALL_ELF == 2
  #  ifdef __PCREL__
  	bl	ffi_prep_args64@notoc
  #  else
  	bl	ffi_prep_args64
  	nop
  #  endif
  # else
  	bl	.ffi_prep_args64
  	nop
  # endif
  
  # if _CALL_ELF == 2
  	mr	%r12, %r29
  # else
  	ld	%r12, 0(%r29)
  	ld	%r2, 8(%r29)
  # endif
  	/* Now do the call.  */
  	/* Set up cr1 with bits 3-7 of the flags.  */
  	mtcrf	0xc0, %r31
  
  	/* Get the address to call into CTR.  */
  	mtctr	%r12
  	/* Load all those argument registers.  */
  	addi	%r29, %r28, -32-(8*8)
  	ld	%r3,  (0*8)(%r29)
  	ld	%r4,  (1*8)(%r29)
  	ld	%r5,  (2*8)(%r29)
  	ld	%r6,  (3*8)(%r29)
  	bf-	5, 1f
  	ld	%r7,  (4*8)(%r29)
  	ld	%r8,  (5*8)(%r29)
  	ld	%r9,  (6*8)(%r29)
  	ld	%r10, (7*8)(%r29)
  1:
  
  	/* Load all the FP registers.  */
  	bf-	6, 2f
  	addi	%r29, %r29, -(14*8)
  	lfd	%f1,  ( 1*8)(%r29)
  	lfd	%f2,  ( 2*8)(%r29)
  	lfd	%f3,  ( 3*8)(%r29)
  	lfd	%f4,  ( 4*8)(%r29)
  	lfd	%f5,  ( 5*8)(%r29)
  	lfd	%f6,  ( 6*8)(%r29)
  	lfd	%f7,  ( 7*8)(%r29)
  	lfd	%f8,  ( 8*8)(%r29)
  	lfd	%f9,  ( 9*8)(%r29)
  	lfd	%f10, (10*8)(%r29)
  	lfd	%f11, (11*8)(%r29)
  	lfd	%f12, (12*8)(%r29)
  	lfd	%f13, (13*8)(%r29)
  2:
  
  	/* Load all the vector registers.  */
  	bf-	3, 3f
  	addi	%r29, %r29, -16
  	lvx	%v13, 0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v12, 0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v11, 0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v10, 0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v9,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v8,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v7,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v6,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v5,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v4,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v3,  0, %r29
  	addi	%r29, %r29, -16
  	lvx	%v2,  0, %r29
  3:
  
  	/* Make the call.  */
  	ld	%r11, 8(%r28)
  	bctrl
  
  	/* This must follow the call immediately, the unwinder
  	   uses this to find out if r2 has been saved or not.  */
  # if _CALL_ELF == 2
  	ld	%r2, 24(%r1)
  # else
  	ld	%r2, 40(%r1)
  # endif
  
  	/* Now, deal with the return value.  */
  	mtcrf	0x01, %r31
  	bt	31, .Lstruct_return_value
  	bt	30, .Ldone_return_value
  	bt	29, .Lfp_return_value
  	bt	28, .Lvec_return_value
  	std	%r3, 0(%r30)
  	/* Fall through...  */
  
  .Ldone_return_value:
  	/* Restore the registers we used and return.  */
  	mr	%r1, %r28
  	.cfi_def_cfa_register 1
  	ld	%r0, 16(%r28)
  	ld	%r28, -32(%r28)
  	mtlr	%r0
  	ld	%r29, -24(%r1)
  	ld	%r30, -16(%r1)
  	ld	%r31, -8(%r1)
  	blr
  
  .Lvec_return_value:
  	stvx	%v2, 0, %r30
  	b	.Ldone_return_value
  
  .Lfp_return_value:
  	.cfi_def_cfa_register 28
  	mtcrf	0x02, %r31 /* cr6  */
  	bf	27, .Lfloat_return_value
  	stfd	%f1, 0(%r30)
  	bf	26, .Ldone_return_value
  	stfd	%f2, 8(%r30)
  	b	.Ldone_return_value
  .Lfloat_return_value:
  	stfs	%f1, 0(%r30)
  	b	.Ldone_return_value
  
  .Lstruct_return_value:
  	bf	29, .Lvec_homog_or_small_struct
  	mtcrf	0x02, %r31 /* cr6  */
  	bf	27, .Lfloat_homog_return_value
  	stfd	%f1, 0(%r30)
  	stfd	%f2, 8(%r30)
  	stfd	%f3, 16(%r30)
  	stfd	%f4, 24(%r30)
  	stfd	%f5, 32(%r30)
  	stfd	%f6, 40(%r30)
  	stfd	%f7, 48(%r30)
  	stfd	%f8, 56(%r30)
  	b	.Ldone_return_value
  
  .Lfloat_homog_return_value:
  	stfs	%f1, 0(%r30)
  	stfs	%f2, 4(%r30)
  	stfs	%f3, 8(%r30)
  	stfs	%f4, 12(%r30)
  	stfs	%f5, 16(%r30)
  	stfs	%f6, 20(%r30)
  	stfs	%f7, 24(%r30)
  	stfs	%f8, 28(%r30)
  	b	.Ldone_return_value
  
  .Lvec_homog_or_small_struct:
  	bf	28, .Lsmall_struct
  	stvx	%v2, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v3, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v4, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v5, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v6, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v7, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v8, 0, %r30
  	addi	%r30, %r30, 16
  	stvx	%v9, 0, %r30
  	b	.Ldone_return_value
  
  .Lsmall_struct:
  	std	%r3, 0(%r30)
  	std	%r4, 8(%r30)
  	b	.Ldone_return_value
  
  	.cfi_endproc
  # if _CALL_ELF == 2
  	.size	ffi_call_LINUX64,.-ffi_call_LINUX64
  # else
  #  ifdef _CALL_LINUX
  	.size	ffi_call_LINUX64,.-.L.ffi_call_LINUX64
  #  else
  	.long	0
  	.byte	0,12,0,1,128,4,0,0
  	.size	.ffi_call_LINUX64,.-.ffi_call_LINUX64
  #  endif
  # endif
  
  #endif
  
  #if (defined __ELF__ && defined __linux__) || _CALL_ELF == 2
  	.section	.note.GNU-stack,"",@progbits
  #endif
  

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