| Message ID | 20171114125304.854-1-richard.henderson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | tcg: Record code_gen_buffer address for user-only memory helpers | expand |
On 14 November 2017 at 12:53, Richard Henderson <richard.henderson@linaro.org> wrote: > We use raw memory primitives along the !parallel_cpus paths in order to > simplify the endianness handling. Because of that, we did not benefit > from the generic changes to cpu_ldst_user_only_template.h. > > The simplest fix is to manipulate helper_retaddr here. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/helper-a64.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c > index d0e435ca4b..96a3ecf707 100644 > --- a/target/arm/helper-a64.c > +++ b/target/arm/helper-a64.c > @@ -456,6 +456,8 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, > #ifdef CONFIG_USER_ONLY > /* ??? Enforce alignment. */ > uint64_t *haddr = g2h(addr); > + > + helper_retaddr = ra; > o0 = ldq_le_p(haddr + 0); > o1 = ldq_le_p(haddr + 1); > oldv = int128_make128(o0, o1); > @@ -465,6 +467,7 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, > stq_le_p(haddr + 0, int128_getlo(newv)); > stq_le_p(haddr + 1, int128_gethi(newv)); > } > + helper_retaddr = 0; > #else > int mem_idx = cpu_mmu_index(env, false); > TCGMemOpIdx oi0 = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx); > @@ -523,6 +526,8 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, > #ifdef CONFIG_USER_ONLY > /* ??? Enforce alignment. */ > uint64_t *haddr = g2h(addr); > + > + helper_retaddr = ra; > o1 = ldq_be_p(haddr + 0); > o0 = ldq_be_p(haddr + 1); > oldv = int128_make128(o0, o1); > @@ -532,6 +537,7 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, > stq_be_p(haddr + 0, int128_gethi(newv)); > stq_be_p(haddr + 1, int128_getlo(newv)); > } > + helper_retaddr = 0; > #else > int mem_idx = cpu_mmu_index(env, false); > TCGMemOpIdx oi0 = make_memop_idx(MO_BEQ | MO_ALIGN_16, mem_idx); > -- > 2.12.0 These functions aren't directly called from guest code, so needs this fixup to work with an unoptimised build: diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index 96a3ecf..b84ebca 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -432,9 +432,8 @@ uint64_t HELPER(crc32c_64)(uint64_t acc, uint64_t val, uint32_t bytes) /* Returns 0 on success; 1 otherwise. */ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi, - bool parallel) + bool parallel, uintptr_t ra) { - uintptr_t ra = GETPC(); Int128 oldv, cmpv, newv; bool success; @@ -491,20 +490,19 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, uint64_t HELPER(paired_cmpxchg64_le)(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi) { - return do_paired_cmpxchg64_le(env, addr, new_lo, new_hi, false); + return do_paired_cmpxchg64_le(env, addr, new_lo, new_hi, false, GETPC()); } uint64_t HELPER(paired_cmpxchg64_le_parallel)(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi) { - return do_paired_cmpxchg64_le(env, addr, new_lo, new_hi, true); + return do_paired_cmpxchg64_le(env, addr, new_lo, new_hi, true, GETPC()); } static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi, - bool parallel) + bool parallel, uintptr_t ra) { - uintptr_t ra = GETPC(); Int128 oldv, cmpv, newv; bool success; @@ -561,11 +559,11 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, uint64_t HELPER(paired_cmpxchg64_be)(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi) { - return do_paired_cmpxchg64_be(env, addr, new_lo, new_hi, false); + return do_paired_cmpxchg64_be(env, addr, new_lo, new_hi, false, GETPC()); } uint64_t HELPER(paired_cmpxchg64_be_parallel)(CPUARMState *env, uint64_t addr, uint64_t new_lo, uint64_t new_hi) { - return do_paired_cmpxchg64_be(env, addr, new_lo, new_hi, true); + return do_paired_cmpxchg64_be(env, addr, new_lo, new_hi, true, GETPC()); } thanks -- PMM
Richard Henderson <richard.henderson@linaro.org> writes: > We use raw memory primitives along the !parallel_cpus paths in order to > simplify the endianness handling. Because of that, we did not benefit > from the generic changes to cpu_ldst_user_only_template.h. > > The simplest fix is to manipulate helper_retaddr here. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/arm/helper-a64.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c > index d0e435ca4b..96a3ecf707 100644 > --- a/target/arm/helper-a64.c > +++ b/target/arm/helper-a64.c > @@ -456,6 +456,8 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, > #ifdef CONFIG_USER_ONLY > /* ??? Enforce alignment. */ > uint64_t *haddr = g2h(addr); > + > + helper_retaddr = ra; > o0 = ldq_le_p(haddr + 0); > o1 = ldq_le_p(haddr + 1); > oldv = int128_make128(o0, o1); > @@ -465,6 +467,7 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, > stq_le_p(haddr + 0, int128_getlo(newv)); > stq_le_p(haddr + 1, int128_gethi(newv)); > } > + helper_retaddr = 0; > #else > int mem_idx = cpu_mmu_index(env, false); > TCGMemOpIdx oi0 = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx); > @@ -523,6 +526,8 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, > #ifdef CONFIG_USER_ONLY > /* ??? Enforce alignment. */ > uint64_t *haddr = g2h(addr); > + > + helper_retaddr = ra; > o1 = ldq_be_p(haddr + 0); > o0 = ldq_be_p(haddr + 1); > oldv = int128_make128(o0, o1); > @@ -532,6 +537,7 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, > stq_be_p(haddr + 0, int128_gethi(newv)); > stq_be_p(haddr + 1, int128_getlo(newv)); > } > + helper_retaddr = 0; > #else > int mem_idx = cpu_mmu_index(env, false); > TCGMemOpIdx oi0 = make_memop_idx(MO_BEQ | MO_ALIGN_16, mem_idx); Reviewed-by: Alex Bennée <alex.bennee@linaro.org> -- Alex Bennée
diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index d0e435ca4b..96a3ecf707 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -456,6 +456,8 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, #ifdef CONFIG_USER_ONLY /* ??? Enforce alignment. */ uint64_t *haddr = g2h(addr); + + helper_retaddr = ra; o0 = ldq_le_p(haddr + 0); o1 = ldq_le_p(haddr + 1); oldv = int128_make128(o0, o1); @@ -465,6 +467,7 @@ static uint64_t do_paired_cmpxchg64_le(CPUARMState *env, uint64_t addr, stq_le_p(haddr + 0, int128_getlo(newv)); stq_le_p(haddr + 1, int128_gethi(newv)); } + helper_retaddr = 0; #else int mem_idx = cpu_mmu_index(env, false); TCGMemOpIdx oi0 = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx); @@ -523,6 +526,8 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, #ifdef CONFIG_USER_ONLY /* ??? Enforce alignment. */ uint64_t *haddr = g2h(addr); + + helper_retaddr = ra; o1 = ldq_be_p(haddr + 0); o0 = ldq_be_p(haddr + 1); oldv = int128_make128(o0, o1); @@ -532,6 +537,7 @@ static uint64_t do_paired_cmpxchg64_be(CPUARMState *env, uint64_t addr, stq_be_p(haddr + 0, int128_gethi(newv)); stq_be_p(haddr + 1, int128_getlo(newv)); } + helper_retaddr = 0; #else int mem_idx = cpu_mmu_index(env, false); TCGMemOpIdx oi0 = make_memop_idx(MO_BEQ | MO_ALIGN_16, mem_idx);
We use raw memory primitives along the !parallel_cpus paths in order to simplify the endianness handling. Because of that, we did not benefit from the generic changes to cpu_ldst_user_only_template.h. The simplest fix is to manipulate helper_retaddr here. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/arm/helper-a64.c | 6 ++++++ 1 file changed, 6 insertions(+)