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92b3138b83
Updated dependencies: * GMP 6.2.1 * ISL 0.24 * MPL 1.2.1 * MPFR 4.1.0 The dependencies were pulled in by running the ./contrib/download_prerequisites script and then manually removing the symbolic links and archives, and renaming the directories (i.e mv isl-0.24 to isl)
255 lines
6.5 KiB
ArmAsm
255 lines
6.5 KiB
ArmAsm
/* i386 support code for fibers and multithreading.
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Copyright (C) 2019-2023 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "../common/threadasm.S"
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/* NB: Generate the CET marker for -fcf-protection. */
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#ifdef __CET__
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# include <cet.h>
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#endif
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#if !defined(__CET__)
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# if defined(__ELF__)
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# if defined(__i386__)
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.text
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.globl CSYM(fiber_switchContext)
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.type CSYM(fiber_switchContext), @function
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.align 16
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CSYM(fiber_switchContext):
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.cfi_startproc
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// save current stack state
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push %ebp
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mov %esp, %ebp
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push %edi
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push %esi
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push %ebx
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push %eax
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// store oldp again with more accurate address
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mov 8(%ebp), %eax
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mov %esp, (%eax)
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// load newp to begin context switch
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mov 12(%ebp), %esp
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// load saved state from new stack
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pop %eax
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pop %ebx
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pop %esi
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pop %edi
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pop %ebp
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// 'return' to complete switch
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ret
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.cfi_endproc
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.size CSYM(fiber_switchContext),.-CSYM(fiber_switchContext)
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# endif /* defined(__ELF__) && defined(__i386__) */
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# if defined(__x86_64__) && !defined(__ILP32__)
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.text
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.globl CSYM(fiber_switchContext)
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.type CSYM(fiber_switchContext), @function
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.align 16
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CSYM(fiber_switchContext):
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.cfi_startproc
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// Save current stack state.save current stack state
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push %rbp
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mov %rsp, %rbp
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push %rbx
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push %r12
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push %r13
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push %r14
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push %r15
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// store oldp again with more accurate address
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mov %rsp, (%rdi)
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// load newp to begin context switch
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mov %rsi, %rsp
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// load saved state from new stack
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pop %r15
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pop %r14
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pop %r13
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pop %r12
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pop %rbx
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pop %rbp
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// 'return' to complete switch
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ret
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.cfi_endproc
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.size CSYM(fiber_switchContext),.-CSYM(fiber_switchContext)
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# endif /* defined(__ELF__) && defined(__x86_64__) && !defined(__ILP32__) */
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# endif /* defined(__ELF__) */
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# if defined(__MACH__)
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# if defined(__i386__)
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.text
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.globl CSYM(fiber_switchContext)
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.p2align 4
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CSYM(fiber_switchContext):
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LFB0:
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// save current stack state
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push %ebp
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mov %esp, %ebp
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push %edi
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push %esi
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push %ebx
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push %eax
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// store oldp again with more accurate address
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mov 8(%ebp), %eax
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mov %esp, (%eax)
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// load newp to begin context switch
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mov 12(%ebp), %esp
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// load saved state from new stack
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pop %eax
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pop %ebx
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pop %esi
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pop %edi
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pop %ebp
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// 'return' to complete switch
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ret
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LFE0:
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/* CFI */
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.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
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EH_frame1:
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.set L$set$0,LECIE1-LSCIE1
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.long L$set$0 # Length of Common Information Entry
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LSCIE1:
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.long 0 # CIE Identifier Tag
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.byte 0x1 # CIE Version
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.ascii "zR\0" # CIE Augmentation
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.byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
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.byte 0x7c # sleb128 -4; CIE Data Alignment Factor
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.byte 0x8 # CIE RA Column
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.byte 0x1 # uleb128 0x1; Augmentation size
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.byte 0x10 # FDE Encoding (pcrel)
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.byte 0xc # DW_CFA_def_cfa
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.byte 0x5 # uleb128 0x5
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.byte 0x4 # uleb128 0x4
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.byte 0x88 # DW_CFA_offset, column 0x8
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.byte 0x1 # uleb128 0x1
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.p2align 2,0
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LECIE1:
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/* minimal FDE - does not record the stack frame changes. */
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LSFDE1:
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.set L$set$1,LEFDE1-LASFDE1
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.long L$set$1 # FDE Length
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LASFDE1:
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.long LASFDE1-EH_frame1 # FDE CIE offset
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.long LFB0-. # FDE initial location
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.set L$set$2,LFE0-LFB0
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.long L$set$2 # FDE address range
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.byte 0 # uleb128 0; Augmentation size
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.p2align 2,0
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LEFDE1:
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# endif /* defined(__MACH__) && defined(__i386__) */
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# if defined(__x86_64__) && !defined(__ILP32__)
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.text
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.globl CSYM(fiber_switchContext)
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.p2align 4
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CSYM(fiber_switchContext):
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LFB0:
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// Save current stack state.save current stack state
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push %rbp
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mov %rsp, %rbp
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push %r15
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push %r14
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push %r13
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push %r12
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push %rbx
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// store oldp again with more accurate address
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mov %rsp, (%rdi)
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// load newp to begin context switch
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mov %rsi, %rsp
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// load saved state from new stack
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pop %rbx
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pop %r12
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pop %r13
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pop %r14
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pop %r15
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pop %rbp
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// 'return' to complete switch
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ret
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LFE0:
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/* CFI */
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.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
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EH_frame1:
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.set L$set$0,LECIE1-LSCIE1
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.long L$set$0 # Length of Common Information Entry
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LSCIE1:
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.long 0 # CIE Identifier Tag
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.byte 0x1 # CIE Version
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.ascii "zR\0" # CIE Augmentation
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.byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
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.byte 0x78 # sleb128 -8; CIE Data Alignment Factor
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.byte 0x10 # CIE RA Column
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.byte 0x1 # uleb128 0x1; Augmentation size
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.byte 0x10 # FDE Encoding (pcrel)
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.byte 0xc # DW_CFA_def_cfa
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.byte 0x7 # uleb128 0x7
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.byte 0x8 # uleb128 0x8
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.byte 0x90 # DW_CFA_offset, column 0x10
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.byte 0x1 # uleb128 0x1
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.p2align 3,0
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LECIE1:
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/* minimal FDE - does not record the stack frame changes. */
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LSFDE1:
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.set L$set$1,LEFDE1-LASFDE1
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.long L$set$1 # FDE Length
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LASFDE1:
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.long LASFDE1-EH_frame1 # FDE CIE offset
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.quad LFB0-. # FDE initial location
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.set L$set$2,LFE0-LFB0
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.quad L$set$2 # FDE address range
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.byte 0 # uleb128 0; Augmentation size
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.p2align 3,0
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LEFDE1:
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# endif /* defined(__MACH__) && defined(__x86_64__) && !defined(__ILP32__) */
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# endif /* defined (__MACH__) */
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#endif /* !defined(__CET__) */
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