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Um, that'd be, align the word *before* retpc. Addresses point to the low part of a word. Un-XFAIL nbody on Darwin.

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This commit is contained in:
Graydon Hoare 2011-03-30 14:10:06 -07:00
parent 3e7b991d49
commit a154c5b656
2 changed files with 7 additions and 10 deletions
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3
Makefile.in
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@ -587,9 +587,6 @@ ifdef CFG_WINDOWSY
TEST_XFAILS_BOOT += $(S)src/test/run-pass/native-mod.rc
TEST_XFAILS_STAGE0 += $(S)src/test/run-pass/native-mod.rc
endif
ifeq ($(CFG_OSTYPE), Darwin)
TEST_XFAILS_STAGE0 += $(S)src/test/bench/shootout/nbody.rs
endif
BENCH_RS = $(wildcard $(S)src/test/bench/shootout/*.rs) \
$(wildcard $(S)src/test/bench/99-bottles/*.rs)

14
src/rt/rust_task.cpp
View File

@ -150,8 +150,8 @@ rust_task::start(uintptr_t exit_task_glue,
rust_sp -= sizeof(uintptr_t);
// NB: Darwin needs "16-byte aligned" stacks *at the point of the call
// instruction in the caller*. This means that the address at which a
// retpc is pushed must always be 16-byte aligned.
// instruction in the caller*. This means that the address at which the
// word before retpc is pushed must always be 16-byte aligned.
//
// see: "Mac OS X ABI Function Call Guide"
@ -168,11 +168,11 @@ rust_task::start(uintptr_t exit_task_glue,
// The exit_task_glue frame we synthesize above the frame we activate:
make_aligned_room_for_bytes(spp, 3 * sizeof(uintptr_t));
make_aligned_room_for_bytes(spp, 2 * sizeof(uintptr_t));
*spp-- = (uintptr_t) 0; // closure-or-obj
*spp-- = (uintptr_t) this; // task
*spp-- = (uintptr_t) 0x0; // output
I(dom, spp == align_down(spp));
*spp-- = (uintptr_t) 0x0; // output
*spp-- = (uintptr_t) 0x0; // retpc
uintptr_t exit_task_frame_base;
@ -198,9 +198,9 @@ rust_task::start(uintptr_t exit_task_glue,
I(dom, args);
if (spawnee_abi == ABI_X86_RUSTBOOT_CDECL)
make_aligned_room_for_bytes(spp, callsz);
make_aligned_room_for_bytes(spp, callsz - sizeof(uintptr_t));
else
make_aligned_room_for_bytes(spp, callsz - 2 * sizeof(uintptr_t));
make_aligned_room_for_bytes(spp, callsz - 3 * sizeof(uintptr_t));
// Copy args from spawner to spawnee.
uintptr_t *src = (uintptr_t *)args;
@ -233,7 +233,7 @@ rust_task::start(uintptr_t exit_task_glue,
I(dom, spawnee_abi == ABI_X86_RUSTC_FASTCALL);
}
I(dom, spp == align_down(spp));
I(dom, spp+1 == align_down(spp+1));
*spp-- = (uintptr_t) exit_task_glue; // retpc
// The context the activate_glue needs to switch stack.