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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-24 01:42:09 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-24 01:42:09 +0400 |
| commit | 12cbfd0a3c52a52c2948c91b9e62e73c468d1572 (patch) | |
| tree | 9252b3929159a83fc81ca0a48706bfa959660967 /arch/x86/um/stub_32.S | |
| parent | b32e724308300a6ecead0f4895f0452a06a4291d (diff) | |
| parent | cfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff) | |
| download | linux-12cbfd0a3c52a52c2948c91b9e62e73c468d1572.tar.xz | |
Merge tag 'v3.2-rc2' into staging/for_v3.3
* tag 'v3.2-rc2': (3068 commits)
Linux 3.2-rc2
hfs: add sanity check for file name length
fsl-rio: fix compile error
blackfin: Fixup export.h includes
Blackfin: add serial TX IRQ in individual platform resource
virtio-pci: fix use after free
ACPI / cpuidle: Remove acpi_idle_suspend (to fix suspend regression)
drm/radeon/kms/combios: fix dynamic allocation of PM clock modes
[CPUFREQ] db8500: fix build error due to undeclared i variable
bma023: Add SFI translation for this device
vrtc: change its year offset from 1960 to 1972
ce4100: fix a build error
arm/imx: fix imx6q mmc error when mounting rootfs
arm/imx: fix AUTO_ZRELADDR selection
arm/imx: fix the references to ARCH_MX3
ARM: mx51/53: set pwm clock parent to ipg_perclk
btrfs: rename the option to nospace_cache
drm/radeon/kms/pm: switch to dynamically allocating clock mode array
drm/radeon/kms: optimize r600_pm_profile_init
drm/radeon/kms/pm: add a proper pm profile init function for fusion
...
Conflicts:
drivers/media/radio/Kconfig
Diffstat (limited to 'arch/x86/um/stub_32.S')
| -rw-r--r-- | arch/x86/um/stub_32.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/um/stub_32.S b/arch/x86/um/stub_32.S new file mode 100644 index 000000000000..54a36ec20cb7 --- /dev/null +++ b/arch/x86/um/stub_32.S @@ -0,0 +1,51 @@ +#include "as-layout.h" + + .globl syscall_stub +.section .__syscall_stub, "ax" + + .globl batch_syscall_stub +batch_syscall_stub: + /* load pointer to first operation */ + mov $(STUB_DATA+8), %esp + +again: + /* load length of additional data */ + mov 0x0(%esp), %eax + + /* if(length == 0) : end of list */ + /* write possible 0 to header */ + mov %eax, STUB_DATA+4 + cmpl $0, %eax + jz done + + /* save current pointer */ + mov %esp, STUB_DATA+4 + + /* skip additional data */ + add %eax, %esp + + /* load syscall-# */ + pop %eax + + /* load syscall params */ + pop %ebx + pop %ecx + pop %edx + pop %esi + pop %edi + pop %ebp + + /* execute syscall */ + int $0x80 + + /* check return value */ + pop %ebx + cmp %ebx, %eax + je again + +done: + /* save return value */ + mov %eax, STUB_DATA + + /* stop */ + int3 |