svn commit: r335370 - head/contrib/llvm/projects/libunwind/src
Ruslan Bukin
br at FreeBSD.org
Tue Jun 19 14:47:01 UTC 2018
Author: br
Date: Tue Jun 19 14:46:59 2018
New Revision: 335370
URL: https://svnweb.freebsd.org/changeset/base/335370
Log:
o Implement unw_getcontext()
o Restore floating-point registers in jumpto()
These are required to native cross build GCC and GDB
(both do require libc++ and libunwind).
These are not tested.
Sponsored by: DARPA, AFRL
Modified:
head/contrib/llvm/projects/libunwind/src/UnwindRegistersRestore.S
head/contrib/llvm/projects/libunwind/src/UnwindRegistersSave.S
Modified: head/contrib/llvm/projects/libunwind/src/UnwindRegistersRestore.S
==============================================================================
--- head/contrib/llvm/projects/libunwind/src/UnwindRegistersRestore.S Tue Jun 19 13:28:02 2018 (r335369)
+++ head/contrib/llvm/projects/libunwind/src/UnwindRegistersRestore.S Tue Jun 19 14:46:59 2018 (r335370)
@@ -488,6 +488,41 @@ DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind14Regis
//
.p2align 2
DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Registers_riscv6jumptoEv)
+#ifdef __riscv_float_abi_double
+ fld f0, (8 * 32 + 8 * 0)(a0)
+ fld f1, (8 * 32 + 8 * 1)(a0)
+ fld f2, (8 * 32 + 8 * 2)(a0)
+ fld f3, (8 * 32 + 8 * 3)(a0)
+ fld f4, (8 * 32 + 8 * 4)(a0)
+ fld f5, (8 * 32 + 8 * 5)(a0)
+ fld f6, (8 * 32 + 8 * 6)(a0)
+ fld f7, (8 * 32 + 8 * 7)(a0)
+ fld f8, (8 * 32 + 8 * 8)(a0)
+ fld f9, (8 * 32 + 8 * 9)(a0)
+ fld f10, (8 * 32 + 8 * 10)(a0)
+ fld f11, (8 * 32 + 8 * 11)(a0)
+ fld f12, (8 * 32 + 8 * 12)(a0)
+ fld f13, (8 * 32 + 8 * 13)(a0)
+ fld f14, (8 * 32 + 8 * 14)(a0)
+ fld f15, (8 * 32 + 8 * 15)(a0)
+ fld f16, (8 * 32 + 8 * 16)(a0)
+ fld f17, (8 * 32 + 8 * 17)(a0)
+ fld f18, (8 * 32 + 8 * 18)(a0)
+ fld f19, (8 * 32 + 8 * 19)(a0)
+ fld f20, (8 * 32 + 8 * 20)(a0)
+ fld f21, (8 * 32 + 8 * 21)(a0)
+ fld f22, (8 * 32 + 8 * 22)(a0)
+ fld f23, (8 * 32 + 8 * 23)(a0)
+ fld f24, (8 * 32 + 8 * 24)(a0)
+ fld f25, (8 * 32 + 8 * 25)(a0)
+ fld f26, (8 * 32 + 8 * 26)(a0)
+ fld f27, (8 * 32 + 8 * 27)(a0)
+ fld f28, (8 * 32 + 8 * 28)(a0)
+ fld f29, (8 * 32 + 8 * 29)(a0)
+ fld f30, (8 * 32 + 8 * 30)(a0)
+ fld f31, (8 * 32 + 8 * 31)(a0)
+#endif
+
// x0 is zero
ld x1, (8 * 1)(a0)
ld x2, (8 * 2)(a0)
@@ -521,8 +556,6 @@ DEFINE_LIBUNWIND_PRIVATE_FUNCTION(_ZN9libunwind15Regis
ld x30, (8 * 30)(a0)
ld x31, (8 * 31)(a0)
ld x10, (8 * 10)(a0) // restore a0
-
- /* RISCVTODO: restore FPU registers */
ret // jump to ra
Modified: head/contrib/llvm/projects/libunwind/src/UnwindRegistersSave.S
==============================================================================
--- head/contrib/llvm/projects/libunwind/src/UnwindRegistersSave.S Tue Jun 19 13:28:02 2018 (r335369)
+++ head/contrib/llvm/projects/libunwind/src/UnwindRegistersSave.S Tue Jun 19 14:46:59 2018 (r335370)
@@ -665,8 +665,83 @@ DEFINE_LIBUNWIND_FUNCTION(unw_getcontext)
#elif defined(__riscv)
-/* RISCVTODO */
+#
+# extern int unw_getcontext(unw_context_t* thread_state)
+#
+# On entry:
+# thread_state pointer is in a0
+#
+DEFINE_LIBUNWIND_FUNCTION(unw_getcontext)
+ // x0 is zero
+ sd x1, (8 * 1)(a0)
+ sd x2, (8 * 2)(a0)
+ sd x3, (8 * 3)(a0)
+ sd x4, (8 * 4)(a0)
+ sd x5, (8 * 5)(a0)
+ sd x6, (8 * 6)(a0)
+ sd x7, (8 * 7)(a0)
+ sd x8, (8 * 8)(a0)
+ sd x9, (8 * 9)(a0)
+ sd x10, (8 * 10)(a0)
+ sd x11, (8 * 11)(a0)
+ sd x12, (8 * 12)(a0)
+ sd x13, (8 * 13)(a0)
+ sd x14, (8 * 14)(a0)
+ sd x15, (8 * 15)(a0)
+ sd x16, (8 * 16)(a0)
+ sd x17, (8 * 17)(a0)
+ sd x18, (8 * 18)(a0)
+ sd x19, (8 * 19)(a0)
+ sd x20, (8 * 20)(a0)
+ sd x21, (8 * 21)(a0)
+ sd x22, (8 * 22)(a0)
+ sd x23, (8 * 23)(a0)
+ sd x24, (8 * 24)(a0)
+ sd x25, (8 * 25)(a0)
+ sd x26, (8 * 26)(a0)
+ sd x27, (8 * 27)(a0)
+ sd x28, (8 * 28)(a0)
+ sd x29, (8 * 29)(a0)
+ sd x30, (8 * 30)(a0)
+ sd x31, (8 * 31)(a0)
+#ifdef __riscv_float_abi_double
+ fsd f0, (8 * 32 + 8 * 0)(a0)
+ fsd f1, (8 * 32 + 8 * 1)(a0)
+ fsd f2, (8 * 32 + 8 * 2)(a0)
+ fsd f3, (8 * 32 + 8 * 3)(a0)
+ fsd f4, (8 * 32 + 8 * 4)(a0)
+ fsd f5, (8 * 32 + 8 * 5)(a0)
+ fsd f6, (8 * 32 + 8 * 6)(a0)
+ fsd f7, (8 * 32 + 8 * 7)(a0)
+ fsd f8, (8 * 32 + 8 * 8)(a0)
+ fsd f9, (8 * 32 + 8 * 9)(a0)
+ fsd f10, (8 * 32 + 8 * 10)(a0)
+ fsd f11, (8 * 32 + 8 * 11)(a0)
+ fsd f12, (8 * 32 + 8 * 12)(a0)
+ fsd f13, (8 * 32 + 8 * 13)(a0)
+ fsd f14, (8 * 32 + 8 * 14)(a0)
+ fsd f15, (8 * 32 + 8 * 15)(a0)
+ fsd f16, (8 * 32 + 8 * 16)(a0)
+ fsd f17, (8 * 32 + 8 * 17)(a0)
+ fsd f18, (8 * 32 + 8 * 18)(a0)
+ fsd f19, (8 * 32 + 8 * 19)(a0)
+ fsd f20, (8 * 32 + 8 * 20)(a0)
+ fsd f21, (8 * 32 + 8 * 21)(a0)
+ fsd f22, (8 * 32 + 8 * 22)(a0)
+ fsd f23, (8 * 32 + 8 * 23)(a0)
+ fsd f24, (8 * 32 + 8 * 24)(a0)
+ fsd f25, (8 * 32 + 8 * 25)(a0)
+ fsd f26, (8 * 32 + 8 * 26)(a0)
+ fsd f27, (8 * 32 + 8 * 27)(a0)
+ fsd f28, (8 * 32 + 8 * 28)(a0)
+ fsd f29, (8 * 32 + 8 * 29)(a0)
+ fsd f30, (8 * 32 + 8 * 30)(a0)
+ fsd f31, (8 * 32 + 8 * 31)(a0)
+#endif
+
+ li a0, 0 // return UNW_ESUCCESS
+ ret // jump to ra
#endif
NO_EXEC_STACK_DIRECTIVE
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