dev-lang/spidermonkey : drop, use ::gentoo ebuild

1 files changed, 0 insertions, 59 deletions

diff --git a/dev-lang/spidermonkey/files/spidermonkey-60.5.2-ia64-fix-virtual-address-length.patch b/dev-lang/spidermonkey/files/spidermonkey-60.5.2-ia64-fix-virtual-address-length.patch
deleted file mode 100644
index 8b2245f1..00000000
--- a/dev-lang/spidermonkey/files/spidermonkey-60.5.2-ia64-fix-virtual-address-length.patch
+++ /dev/null
@@ -1,59 +0,0 @@
-From 8099213b51180254b322332ecd573239da4212c4 Mon Sep 17 00:00:00 2001
-From: Sergei Trofimovich <slyfox@gentoo.org>
-Date: Thu, 23 Jan 2020 22:57:53 +0000
-Subject: [PATCH] ProcessExecutableMemory.cpp: fix virtual address length on
- ia64
-
-ia64's usable virtual address space is page dependent. For 16K
-pages with 3 levels of page tables de can address only 44 bits
-of virtual memory, not default 47.
-
-The change makes page size detection dynamic and adapts to
-addressable bits. On ia64 it is '4 * log2(page_size/8)'.
-
-Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
----
- js/src/jit/ProcessExecutableMemory.cpp | 25 +++++++++++++++++++++++++
- 1 file changed, 25 insertions(+)
-
-diff --git a/js/src/jit/ProcessExecutableMemory.cpp b/js/src/jit/ProcessExecutableMemory.cpp
-index 9e55c262..8581c150 100644
---- a/js/src/jit/ProcessExecutableMemory.cpp
-+++ b/js/src/jit/ProcessExecutableMemory.cpp
-
-@@ -248,7 +248,32 @@ static void* ComputeRandomAllocationAddress() {
-   // x64 CPUs have a 48-bit address space and on some platforms the OS will
-   // give us access to 47 bits, so to be safe we right shift by 18 to leave
-   // 46 bits.
-+# ifdef __ia64__
-+  // On ia64 virtual address space looks like one of:
-+  //   virt_addr_64 = [ <63..61> | <unimplemented> | L3 | L2 | L1 | offset ]
-+  //   virt_addr_64 = [ <63..61> | <unimplemented> | L4 | L3 | L2 | L1 | offset ]
-+  // where L{1..L4} are page tables. Each page table (except top-level L3 or L4)
-+  // is itself a page-size entry and can store PageSize / 8 entries. Top-level
-+  // entry is 1/8 of of L1/L2 (as 3 upper bits are part of <63..61> address part).
-+  // Note: that makes addressable size directly depend on page size.
-+  //
-+  // We conservatively assume 3 levels of page tables here. This makes the
-+  // following formula:
-+  //   L3     = log2(PAGE / 8 / 8) = log2(PAGE / 8) - 3
-+  //   L2                          = log2(PAGE / 8)
-+  //   L1                          = log2(PAGE / 8)
-+  //   offset = log2(PAGE)         = log2(PAGE / 8) + 3
-+  // thus
-+  //  L3 + L2 + L1 + offset = 4 * log2(PAGE / 8)
-+  // For more details see http://www.ia64-linux.org/doc/IA64linuxkernel.PDF
-+  // (slide 19: "user regions").
-+  static uint64_t ia64_virt_bits = std::min<uint64_t>(
-+      4 * (mozilla::FloorLog2(gc::SystemPageSize() / 8)),
-+      46);
-+  rand >>= (64 - ia64_virt_bits);
-+# else
-   rand >>= 18;
-+# endif
- #else
-   // On 32-bit, right shift by 34 to leave 30 bits, range [0, 1GiB). Then add
-   // 512MiB to get range [512MiB, 1.5GiB), or [0x20000000, 0x60000000). This
--- 
-2.25.0
-