| Message ID | 1454059965-23402-4-git-send-email-a.rigo@virtualopensystems.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Alvise Rigo <a.rigo@virtualopensystems.com> writes: > Attempting to simplify the helper_*_st_name, wrap the MMIO code into an > inline function. > > Based on this work, Alex proposed the following patch series > https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg01136.html > that reduces code duplication of the softmmu_helpers. > > Suggested-by: Jani Kokkonen <jani.kokkonen@huawei.com> > Suggested-by: Claudio Fontana <claudio.fontana@huawei.com> > Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com> > --- > softmmu_template.h | 66 ++++++++++++++++++++++++++++++++++++------------------ > 1 file changed, 44 insertions(+), 22 deletions(-) > > diff --git a/softmmu_template.h b/softmmu_template.h > index 7029a03..3d388ec 100644 > --- a/softmmu_template.h > +++ b/softmmu_template.h > @@ -396,6 +396,26 @@ static inline void glue(helper_le_st_name, _do_unl_access)(CPUArchState *env, > } > } > > +static inline void glue(helper_le_st_name, _do_mmio_access)(CPUArchState *env, > + DATA_TYPE val, > + target_ulong addr, > + TCGMemOpIdx oi, > + unsigned mmu_idx, > + int index, > + uintptr_t retaddr) > +{ > + CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index]; > + > + if ((addr & (DATA_SIZE - 1)) != 0) { > + glue(helper_le_st_name, _do_unl_access)(env, val, addr, mmu_idx, > + oi, retaddr); > + } > + /* ??? Note that the io helpers always read data in the target > + byte ordering. We should push the LE/BE request down into io. */ > + val = TGT_LE(val); > + glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); > +} > + > void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, > TCGMemOpIdx oi, uintptr_t retaddr) > { > @@ -423,17 +443,8 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, > > /* Handle an IO access. */ > if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) { > - CPUIOTLBEntry *iotlbentry; > - if ((addr & (DATA_SIZE - 1)) != 0) { > - glue(helper_le_st_name, _do_unl_access)(env, val, addr, mmu_idx, > - oi, retaddr); > - } > - iotlbentry = &env->iotlb[mmu_idx][index]; > - > - /* ??? Note that the io helpers always read data in the target > - byte ordering. We should push the LE/BE request down into io. */ > - val = TGT_LE(val); > - glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); > + glue(helper_le_st_name, _do_mmio_access)(env, val, addr, oi, > + mmu_idx, index, retaddr); > return; > } > > @@ -488,6 +499,26 @@ static inline void glue(helper_be_st_name, _do_unl_access)(CPUArchState *env, > } > } > > +static inline void glue(helper_be_st_name, _do_mmio_access)(CPUArchState *env, > + DATA_TYPE val, > + target_ulong addr, > + TCGMemOpIdx oi, > + unsigned mmu_idx, > + int index, > + uintptr_t retaddr) > +{ > + CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index]; > + > + if ((addr & (DATA_SIZE - 1)) != 0) { > + glue(helper_be_st_name, _do_unl_access)(env, val, addr, mmu_idx, > + oi, retaddr); > + } > + /* ??? Note that the io helpers always read data in the target > + byte ordering. We should push the LE/BE request down into io. */ > + val = TGT_BE(val); > + glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); > +} > + As before I still thing there is millage in having a common helper between LE/BE which the compiler can sort out. Having said that there is less argument for this function as it is a bit smalled and you would need a bit more faffing about. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> > void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, > TCGMemOpIdx oi, uintptr_t retaddr) > { > @@ -515,17 +546,8 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, > > /* Handle an IO access. */ > if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) { > - CPUIOTLBEntry *iotlbentry; > - if ((addr & (DATA_SIZE - 1)) != 0) { > - glue(helper_be_st_name, _do_unl_access)(env, val, addr, mmu_idx, > - oi, retaddr); > - } > - iotlbentry = &env->iotlb[mmu_idx][index]; > - > - /* ??? Note that the io helpers always read data in the target > - byte ordering. We should push the LE/BE request down into io. */ > - val = TGT_BE(val); > - glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); > + glue(helper_be_st_name, _do_mmio_access)(env, val, addr, oi, > + mmu_idx, index, retaddr); > return; > } -- Alex Bennée
diff --git a/softmmu_template.h b/softmmu_template.h index 7029a03..3d388ec 100644 --- a/softmmu_template.h +++ b/softmmu_template.h @@ -396,6 +396,26 @@ static inline void glue(helper_le_st_name, _do_unl_access)(CPUArchState *env, } } +static inline void glue(helper_le_st_name, _do_mmio_access)(CPUArchState *env, + DATA_TYPE val, + target_ulong addr, + TCGMemOpIdx oi, + unsigned mmu_idx, + int index, + uintptr_t retaddr) +{ + CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index]; + + if ((addr & (DATA_SIZE - 1)) != 0) { + glue(helper_le_st_name, _do_unl_access)(env, val, addr, mmu_idx, + oi, retaddr); + } + /* ??? Note that the io helpers always read data in the target + byte ordering. We should push the LE/BE request down into io. */ + val = TGT_LE(val); + glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); +} + void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, TCGMemOpIdx oi, uintptr_t retaddr) { @@ -423,17 +443,8 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, /* Handle an IO access. */ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) { - CPUIOTLBEntry *iotlbentry; - if ((addr & (DATA_SIZE - 1)) != 0) { - glue(helper_le_st_name, _do_unl_access)(env, val, addr, mmu_idx, - oi, retaddr); - } - iotlbentry = &env->iotlb[mmu_idx][index]; - - /* ??? Note that the io helpers always read data in the target - byte ordering. We should push the LE/BE request down into io. */ - val = TGT_LE(val); - glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); + glue(helper_le_st_name, _do_mmio_access)(env, val, addr, oi, + mmu_idx, index, retaddr); return; } @@ -488,6 +499,26 @@ static inline void glue(helper_be_st_name, _do_unl_access)(CPUArchState *env, } } +static inline void glue(helper_be_st_name, _do_mmio_access)(CPUArchState *env, + DATA_TYPE val, + target_ulong addr, + TCGMemOpIdx oi, + unsigned mmu_idx, + int index, + uintptr_t retaddr) +{ + CPUIOTLBEntry *iotlbentry = &env->iotlb[mmu_idx][index]; + + if ((addr & (DATA_SIZE - 1)) != 0) { + glue(helper_be_st_name, _do_unl_access)(env, val, addr, mmu_idx, + oi, retaddr); + } + /* ??? Note that the io helpers always read data in the target + byte ordering. We should push the LE/BE request down into io. */ + val = TGT_BE(val); + glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); +} + void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, TCGMemOpIdx oi, uintptr_t retaddr) { @@ -515,17 +546,8 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val, /* Handle an IO access. */ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) { - CPUIOTLBEntry *iotlbentry; - if ((addr & (DATA_SIZE - 1)) != 0) { - glue(helper_be_st_name, _do_unl_access)(env, val, addr, mmu_idx, - oi, retaddr); - } - iotlbentry = &env->iotlb[mmu_idx][index]; - - /* ??? Note that the io helpers always read data in the target - byte ordering. We should push the LE/BE request down into io. */ - val = TGT_BE(val); - glue(io_write, SUFFIX)(env, iotlbentry, val, addr, retaddr); + glue(helper_be_st_name, _do_mmio_access)(env, val, addr, oi, + mmu_idx, index, retaddr); return; }
Attempting to simplify the helper_*_st_name, wrap the MMIO code into an inline function. Based on this work, Alex proposed the following patch series https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg01136.html that reduces code duplication of the softmmu_helpers. Suggested-by: Jani Kokkonen <jani.kokkonen@huawei.com> Suggested-by: Claudio Fontana <claudio.fontana@huawei.com> Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com> --- softmmu_template.h | 66 ++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 44 insertions(+), 22 deletions(-)