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-rw-r--r--xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_s390x.cpp190
1 files changed, 190 insertions, 0 deletions
diff --git a/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_s390x.cpp b/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_s390x.cpp
new file mode 100644
index 000000000..86478a850
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_s390x.cpp
@@ -0,0 +1,190 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Platform specific code to invoke XPCOM methods on native objects */
+
+#include "xptcprivate.h"
+
+
+static uint32_t
+invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
+{
+ uint32_t overflow = 0, gpr = 1 /*this*/, fpr = 0;
+ for(uint32_t i = 0; i < paramCount; i++, s++)
+ {
+ if(s->IsPtrData())
+ {
+ if (gpr < 5) gpr++; else overflow++;
+ continue;
+ }
+ switch(s->type)
+ {
+ case nsXPTType::T_I8 :
+ case nsXPTType::T_I16 :
+ case nsXPTType::T_I32 :
+ case nsXPTType::T_I64 :
+ if (gpr < 5) gpr++; else overflow++;
+ break;
+ case nsXPTType::T_U8 :
+ case nsXPTType::T_U16 :
+ case nsXPTType::T_U32 :
+ case nsXPTType::T_U64 :
+ if (gpr < 5) gpr++; else overflow++;
+ break;
+ case nsXPTType::T_FLOAT :
+ case nsXPTType::T_DOUBLE :
+ if (fpr < 4) fpr++; else overflow++;
+ break;
+ case nsXPTType::T_BOOL :
+ case nsXPTType::T_CHAR :
+ case nsXPTType::T_WCHAR :
+ if (gpr < 5) gpr++; else overflow++;
+ break;
+ default:
+ // all the others are plain pointer types
+ if (gpr < 5) gpr++; else overflow++;
+ break;
+ }
+ }
+ /* Round up number of overflow words to ensure stack
+ stays aligned to 8 bytes. */
+ return (overflow + 1) & ~1;
+}
+
+static void
+invoke_copy_to_stack(uint32_t paramCount, nsXPTCVariant* s, uint64_t* d_ov, uint32_t overflow)
+{
+ uint64_t *d_gpr = d_ov + overflow;
+ uint64_t *d_fpr = (uint64_t *)(d_gpr + 4);
+ uint32_t gpr = 1 /*this*/, fpr = 0;
+
+ for(uint32_t i = 0; i < paramCount; i++, s++)
+ {
+ if(s->IsPtrData())
+ {
+ if (gpr < 5)
+ *((void**)d_gpr) = s->ptr, d_gpr++, gpr++;
+ else
+ *((void**)d_ov ) = s->ptr, d_ov++;
+ continue;
+ }
+ switch(s->type)
+ {
+ case nsXPTType::T_I8 :
+ if (gpr < 5)
+ *((int64_t*) d_gpr) = s->val.i8, d_gpr++, gpr++;
+ else
+ *((int64_t*) d_ov ) = s->val.i8, d_ov++;
+ break;
+ case nsXPTType::T_I16 :
+ if (gpr < 5)
+ *((int64_t*) d_gpr) = s->val.i16, d_gpr++, gpr++;
+ else
+ *((int64_t*) d_ov ) = s->val.i16, d_ov++;
+ break;
+ case nsXPTType::T_I32 :
+ if (gpr < 5)
+ *((int64_t*) d_gpr) = s->val.i32, d_gpr++, gpr++;
+ else
+ *((int64_t*) d_ov ) = s->val.i32, d_ov++;
+ break;
+ case nsXPTType::T_I64 :
+ if (gpr < 5)
+ *((int64_t*) d_gpr) = s->val.i64, d_gpr++, gpr++;
+ else
+ *((int64_t*) d_ov ) = s->val.i64, d_ov++;
+ break;
+ case nsXPTType::T_U8 :
+ if (gpr < 5)
+ *((uint64_t*) d_gpr) = s->val.u8, d_gpr++, gpr++;
+ else
+ *((uint64_t*) d_ov ) = s->val.u8, d_ov++;
+ break;
+ case nsXPTType::T_U16 :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.u16, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.u16, d_ov++;
+ break;
+ case nsXPTType::T_U32 :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.u32, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.u32, d_ov++;
+ break;
+ case nsXPTType::T_U64 :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.u64, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.u64, d_ov++;
+ break;
+ case nsXPTType::T_FLOAT :
+ if (fpr < 4)
+ *((float*) d_fpr) = s->val.f, d_fpr++, fpr++;
+ else
+ *(((float*) d_ov )+1) = s->val.f, d_ov++;
+ break;
+ case nsXPTType::T_DOUBLE :
+ if (fpr < 4)
+ *((double*) d_fpr) = s->val.d, d_fpr++, fpr++;
+ else
+ *((double*) d_ov ) = s->val.d, d_ov++;
+ break;
+ case nsXPTType::T_BOOL :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.b, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.b, d_ov++;
+ break;
+ case nsXPTType::T_CHAR :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.c, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.c, d_ov++;
+ break;
+ case nsXPTType::T_WCHAR :
+ if (gpr < 5)
+ *((uint64_t*)d_gpr) = s->val.wc, d_gpr++, gpr++;
+ else
+ *((uint64_t*)d_ov ) = s->val.wc, d_ov++;
+ break;
+ default:
+ // all the others are plain pointer types
+ if (gpr < 5)
+ *((void**) d_gpr) = s->val.p, d_gpr++, gpr++;
+ else
+ *((void**) d_ov ) = s->val.p, d_ov++;
+ break;
+ }
+ }
+}
+
+typedef nsresult (*vtable_func)(nsISupports *, uint64_t, uint64_t, uint64_t, uint64_t, double, double, double, double);
+
+// Avoid AddressSanitizer instrumentation for the next function because it
+// depends on __builtin_alloca behavior and alignment that cannot be relied on
+// once the function is compiled with a version of ASan that has dynamic-alloca
+// instrumentation enabled.
+
+MOZ_ASAN_BLACKLIST
+EXPORT_XPCOM_API(nsresult)
+NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
+ uint32_t paramCount, nsXPTCVariant* params)
+{
+ vtable_func *vtable = *reinterpret_cast<vtable_func **>(that);
+ vtable_func method = vtable[methodIndex];
+ uint64_t overflow = invoke_count_words (paramCount, params);
+ uint64_t *stack_space = reinterpret_cast<uint64_t *>(__builtin_alloca((overflow + 8 /* 4 64-bits gpr + 4 64-bits fpr */) * 8));
+ uint64_t result;
+
+ invoke_copy_to_stack(paramCount, params, stack_space, overflow);
+
+ uint64_t *d_gpr = stack_space + overflow;
+ double *d_fpr = reinterpret_cast<double *>(d_gpr + 4);
+
+ return method(that, d_gpr[0], d_gpr[1], d_gpr[2], d_gpr[3], d_fpr[0], d_fpr[1], d_fpr[2], d_fpr[3]);
+}
+