diff options
| author | Richard Henderson <rth@twiddle.net> | 2011-10-17 10:42:49 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2011-10-26 13:55:26 -0700 |
| commit | 30038fd81808f7c3bca92be2369e74c8ca7b3d69 (patch) | |
| tree | bf718259c3d5bcc3e4f8605dbe9828c739be345d /linux-user | |
| parent | 45c7b743cda3e87e528516ac1dd039d5932433a3 (diff) | |
target-sparc: Change fpr representation to doubles.
This allows a more efficient representation for 64-bit hosts.
It should be about the same for 32-bit hosts, as we can still
access the individual pieces of the double.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/signal.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 40c5eb1846..f3b767ea7e 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -2296,12 +2296,14 @@ void sparc64_set_context(CPUSPARCState *env) */ err |= __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs)); { - uint32_t *src, *dst; - src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; - dst = env->fpr; - /* XXX: check that the CPU storage is the same as user context */ - for (i = 0; i < 64; i++, dst++, src++) - err |= __get_user(*dst, src); + uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; + for (i = 0; i < 64; i++, src++) { + if (i & 1) { + err |= __get_user(env->fpr[i/2].l.lower, src); + } else { + err |= __get_user(env->fpr[i/2].l.upper, src); + } + } } err |= __get_user(env->fsr, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr)); @@ -2390,12 +2392,14 @@ void sparc64_get_context(CPUSPARCState *env) err |= __put_user(i7, &(mcp->mc_i7)); { - uint32_t *src, *dst; - src = env->fpr; - dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; - /* XXX: check that the CPU storage is the same as user context */ - for (i = 0; i < 64; i++, dst++, src++) - err |= __put_user(*src, dst); + uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs; + for (i = 0; i < 64; i++, dst++) { + if (i & 1) { + err |= __put_user(env->fpr[i/2].l.lower, dst); + } else { + err |= __put_user(env->fpr[i/2].l.upper, dst); + } + } } err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); |