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-rw-r--r--system/libffi/powerpc-fixes.patch79
1 files changed, 79 insertions, 0 deletions
diff --git a/system/libffi/powerpc-fixes.patch b/system/libffi/powerpc-fixes.patch
new file mode 100644
index 000000000..e62ae32d1
--- /dev/null
+++ b/system/libffi/powerpc-fixes.patch
@@ -0,0 +1,79 @@
+From bf6946074b948540e4147154041ea244bafb38c4 Mon Sep 17 00:00:00 2001
+From: Samuel Holland <samuel@sholland.org>
+Date: Sat, 13 Oct 2018 01:14:03 +0000
+Subject: [PATCH] powerpc: Fix alignment after float structs
+
+---
+ src/powerpc/ffi_linux64.c | 8 +++-----
+ 1 file changed, 3 insertions(+), 5 deletions(-)
+
+diff --git a/src/powerpc/ffi_linux64.c b/src/powerpc/ffi_linux64.c
+index 2534ecf3..197a270d 100644
+--- a/src/powerpc/ffi_linux64.c
++++ b/src/powerpc/ffi_linux64.c
+@@ -580,11 +580,9 @@ ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
+ fparg_count++;
+ }
+ while (--elnum != 0);
+- if ((next_arg.p & 3) != 0)
+- {
+- if (++next_arg.f == gpr_end.f)
+- next_arg.f = rest.f;
+- }
++ if ((next_arg.p & 7) != 0)
++ if (++next_arg.f == gpr_end.f)
++ next_arg.f = rest.f;
+ }
+ else
+ do
+From 49a1bbadfa0b5ad5c373271c8ba7a5d8911a85d9 Mon Sep 17 00:00:00 2001
+From: Samuel Holland <samuel@sholland.org>
+Date: Sat, 13 Oct 2018 01:14:20 +0000
+Subject: [PATCH] powerpc: Don't pad rvalues copied from FP regs
+
+---
+ src/powerpc/ffi.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/src/powerpc/ffi.c b/src/powerpc/ffi.c
+index 7eb543e4..94a11700 100644
+--- a/src/powerpc/ffi.c
++++ b/src/powerpc/ffi.c
+@@ -121,8 +121,9 @@ ffi_call_int (ffi_cif *cif,
+ # endif
+ /* The SYSV ABI returns a structure of up to 8 bytes in size
+ left-padded in r3/r4, and the ELFv2 ABI similarly returns a
+- structure of up to 8 bytes in size left-padded in r3. */
+- if (rsize <= 8)
++ structure of up to 8 bytes in size left-padded in r3. But
++ note that a structure of a single float is not paddded. */
++ if (rsize <= 8 && (cif->flags & FLAG_RETURNS_FP) == 0)
+ memcpy (rvalue, (char *) smst_buffer + 8 - rsize, rsize);
+ else
+ #endif
+From b0c598d5d6b653a3ea87a2d04afb6b35441e5f7e Mon Sep 17 00:00:00 2001
+From: Samuel Holland <samuel@sholland.org>
+Date: Sat, 13 Oct 2018 01:14:58 +0000
+Subject: [PATCH] powerpc: Add missing check in struct alignment
+
+---
+ src/powerpc/ffi_linux64.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/powerpc/ffi_linux64.c b/src/powerpc/ffi_linux64.c
+index 197a270d..d755c712 100644
+--- a/src/powerpc/ffi_linux64.c
++++ b/src/powerpc/ffi_linux64.c
+@@ -536,7 +536,11 @@ ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
+ if (align > 16)
+ align = 16;
+ if (align > 1)
+- next_arg.p = ALIGN (next_arg.p, align);
++ {
++ next_arg.p = ALIGN (next_arg.p, align);
++ if (next_arg.ul == gpr_end.ul)
++ next_arg.ul = rest.ul;
++ }
+ }
+ #if _CALL_ELF == 2
+ elt = discover_homogeneous_aggregate (*ptr, &elnum);