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| author | Peter Maydell <peter.maydell@linaro.org> | 2016-09-15 10:24:22 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-09-15 10:24:22 +0100 |
| commit | 8212ff86f4405b6128d89dd1d97ff2d6cfcf9842 (patch) | |
| tree | 50f293d984cbe311cd984cb41989d85eb0fa5076 /pc-bios/optionrom/linuxboot_dma.c | |
| parent | 507e4ddc3abf67391bcbc9624fd60b969c159b78 (diff) | |
| parent | 083d012a388e7e2a8bfd9144c2c9bcceb29a78fc (diff) | |
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* minor patches here and there
* MTTCG: lock-free TB lookup
* SCSI: bugfixes for MPTSAS, MegaSAS, LSI53c, vmw_pvscsi
* buffer_is_zero rewrite (except for one patch)
* chardev: qemu_chr_fe_write checks
* checkpatch improvement for markdown preformatted text
* default-configs cleanups
* atomics cleanups
# gpg: Signature made Tue 13 Sep 2016 18:14:30 BST
# gpg: using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream: (58 commits)
cutils: Add generic prefetch
cutils: Add SSE4 version
cutils: Add test for buffer_is_zero
cutils: Remove ppc buffer zero checking
cutils: Remove aarch64 buffer zero checking
cutils: Rearrange buffer_is_zero acceleration
cutils: Export only buffer_is_zero
cutils: Remove SPLAT macro
cutils: Move buffer_is_zero and subroutines to a new file
ppc: do not redefine CPUPPCState
x86/lapic: Load LAPIC state at post_load
optionrom: do not rely on compiler's bswap optimization
checkpatch: Fix whitespace checks for documentation code blocks
atomics: Use __atomic_*_n() variant primitives
atomics: Remove redundant barrier()'s
kvm-all: drop kvm_setup_guest_memory
i8257: Make device "i8257" unavailable with -device
Revert "megasas: remove useless check for cmd->frame"
char: convert qemu_chr_fe_write to qemu_chr_fe_write_all
hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Conflicts:
cpus.c
tests/Makefile.include
Diffstat (limited to 'pc-bios/optionrom/linuxboot_dma.c')
| -rw-r--r-- | pc-bios/optionrom/linuxboot_dma.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/pc-bios/optionrom/linuxboot_dma.c b/pc-bios/optionrom/linuxboot_dma.c index 7549797732..4754282ad7 100644 --- a/pc-bios/optionrom/linuxboot_dma.c +++ b/pc-bios/optionrom/linuxboot_dma.c @@ -122,24 +122,14 @@ static inline void writel_es(uint16_t offset, uint32_t val) static inline uint32_t bswap32(uint32_t x) { - return - ((x & 0x000000ffU) << 24) | - ((x & 0x0000ff00U) << 8) | - ((x & 0x00ff0000U) >> 8) | - ((x & 0xff000000U) >> 24); + asm("bswapl %0" : "=r" (x) : "0" (x)); + return x; } static inline uint64_t bswap64(uint64_t x) { - return - ((x & 0x00000000000000ffULL) << 56) | - ((x & 0x000000000000ff00ULL) << 40) | - ((x & 0x0000000000ff0000ULL) << 24) | - ((x & 0x00000000ff000000ULL) << 8) | - ((x & 0x000000ff00000000ULL) >> 8) | - ((x & 0x0000ff0000000000ULL) >> 24) | - ((x & 0x00ff000000000000ULL) >> 40) | - ((x & 0xff00000000000000ULL) >> 56); + asm("bswapl %%eax; bswapl %%edx; xchg %%eax, %%edx" : "=A" (x) : "0" (x)); + return x; } static inline uint64_t cpu_to_be64(uint64_t x) |