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Viewing changes to arch/x86/lib/rwsem_64.S

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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arch/x86/lib/rwsem_64.S
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#include <asm/dwarf2.h>
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#define save_common_regs \
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        pushq %rdi; \
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        pushq %rsi; \
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        pushq %rcx; \
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        pushq %r8; \
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        pushq %r9; \
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        pushq %r10; \
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        pushq %r11
 
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        pushq_cfi %rdi; CFI_REL_OFFSET rdi, 0; \
 
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        pushq_cfi %rsi; CFI_REL_OFFSET rsi, 0; \
 
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        pushq_cfi %rcx; CFI_REL_OFFSET rcx, 0; \
 
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        pushq_cfi %r8;  CFI_REL_OFFSET r8,  0; \
 
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        pushq_cfi %r9;  CFI_REL_OFFSET r9,  0; \
 
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        pushq_cfi %r10; CFI_REL_OFFSET r10, 0; \
 
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        pushq_cfi %r11; CFI_REL_OFFSET r11, 0
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#define restore_common_regs \
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        popq %r11; \
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        popq %r10; \
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        popq %r9; \
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        popq %r8; \
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        popq %rcx; \
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        popq %rsi; \
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        popq %rdi
 
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        popq_cfi %r11; CFI_RESTORE r11; \
 
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        popq_cfi %r10; CFI_RESTORE r10; \
 
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        popq_cfi %r9;  CFI_RESTORE r9; \
 
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        popq_cfi %r8;  CFI_RESTORE r8; \
 
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        popq_cfi %rcx; CFI_RESTORE rcx; \
 
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        popq_cfi %rsi; CFI_RESTORE rsi; \
 
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        popq_cfi %rdi; CFI_RESTORE rdi
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/* Fix up special calling conventions */
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ENTRY(call_rwsem_down_read_failed)
 
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        CFI_STARTPROC
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        save_common_regs
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        pushq %rdx
 
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        pushq_cfi %rdx
 
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        CFI_REL_OFFSET rdx, 0
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        movq %rax,%rdi
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        call rwsem_down_read_failed
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        popq %rdx
 
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        popq_cfi %rdx
 
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        CFI_RESTORE rdx
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        restore_common_regs
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        ret
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        ENDPROC(call_rwsem_down_read_failed)
 
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        CFI_ENDPROC
 
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ENDPROC(call_rwsem_down_read_failed)
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ENTRY(call_rwsem_down_write_failed)
 
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        CFI_STARTPROC
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        save_common_regs
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        movq %rax,%rdi
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        call rwsem_down_write_failed
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        restore_common_regs
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        ret
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        ENDPROC(call_rwsem_down_write_failed)
 
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        CFI_ENDPROC
 
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ENDPROC(call_rwsem_down_write_failed)
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ENTRY(call_rwsem_wake)
 
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        CFI_STARTPROC
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        decl %edx       /* do nothing if still outstanding active readers */
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        jnz 1f
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        save_common_regs
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        call rwsem_wake
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        restore_common_regs
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1:      ret
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        ENDPROC(call_rwsem_wake)
 
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        CFI_ENDPROC
 
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ENDPROC(call_rwsem_wake)
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/* Fix up special calling conventions */
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ENTRY(call_rwsem_downgrade_wake)
 
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        CFI_STARTPROC
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        save_common_regs
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        pushq %rdx
 
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        pushq_cfi %rdx
 
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        CFI_REL_OFFSET rdx, 0
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        movq %rax,%rdi
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        call rwsem_downgrade_wake
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        popq %rdx
 
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        popq_cfi %rdx
 
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        CFI_RESTORE rdx
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        restore_common_regs
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        ret
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        ENDPROC(call_rwsem_downgrade_wake)
 
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        CFI_ENDPROC
 
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ENDPROC(call_rwsem_downgrade_wake)