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* arm: Support for the kuser_memory_barrier kernel function for memory barriers.

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git-svn-id: trunk@32075 -
This commit is contained in:
yury 2015-10-17 15:40:05 +00:00
parent 55f47e0efc
commit c9a0c5e7a6
1 changed files with 40 additions and 6 deletions
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46
rtl/arm/arm.inc
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@ -1185,12 +1185,29 @@ asm
// assembler settings // assembler settings
{$ifdef CPUARM_HAS_DMB} {$ifdef CPUARM_HAS_DMB}
.long 0xf57ff05f // dmb sy .long 0xf57ff05f // dmb sy
{$else} {$else CPUARM_HAS_DMB}
{$ifdef CPUARMV6} {$ifdef CPUARMV6}
mov r0, #0 mov r0, #0
.long 0xee070fba // mcr 15, 0, r0, cr7, cr10, {5} .long 0xee070fba // mcr 15, 0, r0, cr7, cr10, {5}
{$endif} {$else CPUARMV6}
{$endif} {$ifdef SYSTEM_HAS_KUSER_MEMORY_BARRIER}
stmfd r13!, {lr}
mvn r0, #0x0000f000
sub r0, r0, #0x5F
{$ifdef CPUARM_HAS_BLX}
blx r0 // Call kuser_memory_barrier at address 0xffff0fa0
{$else CPUARM_HAS_BLX}
mov lr, pc
{$ifdef CPUARM_HAS_BX}
bx r0
{$else CPUARM_HAS_BX}
mov pc, r0
{$endif CPUARM_HAS_BX}
{$endif CPUARM_HAS_BLX}
ldmfd r13!, {pc}
{$endif SYSTEM_HAS_KUSER_MEMORY_BARRIER}
{$endif CPUARMV6}
{$endif CPUARM_HAS_DMB}
end; end;
procedure ReadBarrier;{$ifdef SYSTEMINLINE}inline;{$endif} procedure ReadBarrier;{$ifdef SYSTEMINLINE}inline;{$endif}
@ -1214,12 +1231,29 @@ asm
// "dmb st" may be more optimal than the more generic "dmb sy" // "dmb st" may be more optimal than the more generic "dmb sy"
{$ifdef CPUARM_HAS_DMB} {$ifdef CPUARM_HAS_DMB}
.long 0xf57ff05e // dmb st .long 0xf57ff05e // dmb st
{$else} {$else CPUARM_HAS_DMB}
{$ifdef CPUARMV6} {$ifdef CPUARMV6}
mov r0, #0 mov r0, #0
.long 0xee070fba // mcr 15, 0, r0, cr7, cr10, {5} .long 0xee070fba // mcr 15, 0, r0, cr7, cr10, {5}
{$endif} {$else CPUARMV6}
{$endif} {$ifdef SYSTEM_HAS_KUSER_MEMORY_BARRIER}
stmfd r13!, {lr}
mvn r0, #0x0000f000
sub r0, r0, #0x5F
{$ifdef CPUARM_HAS_BLX}
blx r0 // Call kuser_memory_barrier at address 0xffff0fa0
{$else CPUARM_HAS_BLX}
mov lr, pc
{$ifdef CPUARM_HAS_BX}
bx r0
{$else CPUARM_HAS_BX}
mov pc, r0
{$endif CPUARM_HAS_BX}
{$endif CPUARM_HAS_BLX}
ldmfd r13!, {pc}
{$endif SYSTEM_HAS_KUSER_MEMORY_BARRIER}
{$endif CPUARMV6}
{$endif CPUARM_HAS_DMB}
end; end;
{$endif} {$endif}