Updated to gcc 10.1.0 and patchesrefs/changes/36/11336/1

Change-Id: I253657a009f03489aced8dde0ee4ab213221c107

1 files changed, 121 insertions, 0 deletions

diff --git a/PATCHES/0010-Fix-using-large-PCH.gcc10.patch b/PATCHES/0010-Fix-using-large-PCH.gcc10.patch
new file mode 100644
index 0000000..0143af3
--- /dev/null
+++ b/PATCHES/0010-Fix-using-large-PCH.gcc10.patch
@@ -0,0 +1,121 @@
+diff -ruNb gcc-10.1.0.orig/gcc/config/i386/host-mingw32.c gcc-10.1.0/gcc/config/i386/host-mingw32.c
+--- gcc-10.1.0.orig/gcc/config/i386/host-mingw32.c	2020-05-07 12:49:59.000000000 +0200
++++ gcc-10.1.0/gcc/config/i386/host-mingw32.c	2020-05-19 23:31:44.749865244 +0200
+@@ -44,9 +44,6 @@
+ 
+ static inline void w32_error(const char*, const char*, int, const char*);
+ 
+-/* FIXME: Is this big enough?  */
+-static const size_t pch_VA_max_size  = 128 * 1024 * 1024;
+-
+ /* Granularity for reserving address space.  */
+ static size_t va_granularity = 0x10000;
+ 
+@@ -88,9 +85,6 @@
+ mingw32_gt_pch_get_address (size_t size, int)
+ {
+   void* res;
+-  size = (size + va_granularity - 1) & ~(va_granularity - 1);
+-  if (size > pch_VA_max_size)
+-    return NULL;
+ 
+   /* FIXME: We let system determine base by setting first arg to NULL.
+      Allocating at top of available address space avoids unnecessary
+@@ -100,7 +94,7 @@
+      If we allocate at bottom we need to reserve the address as early
+      as possible and at the same point in each invocation. */
+  
+-  res = VirtualAlloc (NULL, pch_VA_max_size,
++  res = VirtualAlloc (NULL, size,
+ 		      MEM_RESERVE | MEM_TOP_DOWN,
+ 		      PAGE_NOACCESS);
+   if (!res)
+@@ -150,7 +144,7 @@
+ 
+   /* Offset must be also be a multiple of allocation granularity for
+      this to work.  We can't change the offset. */ 
+-  if ((offset & (va_granularity - 1)) != 0 || size > pch_VA_max_size)
++  if ((offset & (va_granularity - 1)) != 0)
+     return -1;
+ 
+ 
+diff -ruNb gcc-10.1.0.orig/gcc/ggc-common.c gcc-10.1.0/gcc/ggc-common.c
+--- gcc-10.1.0.orig/gcc/ggc-common.c	2020-05-07 12:49:59.000000000 +0200
++++ gcc-10.1.0/gcc/ggc-common.c	2020-05-19 23:39:22.033605708 +0200
+@@ -591,6 +591,8 @@
+   size_t i;
+   struct mmap_info mmi;
+   int result;
++  long pch_tabs_off;
++  long pch_data_off;
+ 
+   /* Delete any deletable objects.  This makes ggc_pch_read much
+      faster, as it can be sure that no GCable objects remain other
+@@ -600,19 +602,25 @@
+       memset (rti->base, 0, rti->stride);
+ 
+   /* Read in all the scalar variables.  */
++  /* We need to read tables after mapping, or fatal_error will
++     segfault when gt_pch_use_address returns -1. Skip them for now. */
++  pch_tabs_off = ftell(f);
++
++  /* Skip all the scalar variables. */
+   for (rt = gt_pch_scalar_rtab; *rt; rt++)
+     for (rti = *rt; rti->base != NULL; rti++)
+-      if (fread (rti->base, rti->stride, 1, f) != 1)
+-	fatal_error (input_location, "cannot read PCH file: %m");
++      if (fseek (f, rti->stride, SEEK_CUR) != 0)
++        fatal_error (input_location, "can%'t read PCH file: %m");
+ 
+   /* Read in all the global pointers, in 6 easy loops.  */
++  /* Skip all the global pointers. */
+   for (rt = gt_ggc_rtab; *rt; rt++)
+     for (rti = *rt; rti->base != NULL; rti++)
+       for (i = 0; i < rti->nelt; i++)
+-	if (fread ((char *)rti->base + rti->stride * i,
+-		   sizeof (void *), 1, f) != 1)
+-	  fatal_error (input_location, "cannot read PCH file: %m");
++        if (fseek (f, sizeof (void *), SEEK_CUR) != 0)
++          fatal_error (input_location, "can%'t read PCH file: %m");
+ 
++  /* mmi still has to be read now. */
+   if (fread (&mmi, sizeof (mmi), 1, f) != 1)
+     fatal_error (input_location, "cannot read PCH file: %m");
+ 
+@@ -624,11 +632,35 @@
+     {
+       if (fseek (f, mmi.offset, SEEK_SET) != 0
+ 	  || fread (mmi.preferred_base, mmi.size, 1, f) != 1)
+-	fatal_error (input_location, "cannot read PCH file: %m");
++        fatal_error (input_location, "can%'t read PCH file: %m");
++
+     }
+   else if (fseek (f, mmi.offset + mmi.size, SEEK_SET) != 0)
+     fatal_error (input_location, "cannot read PCH file: %m");
+ 
++  /* File mapping done, read tables now. */
++  pch_data_off = ftell(f);
++  
++  if (fseek (f, pch_tabs_off, SEEK_SET) != 0)
++    fatal_error (input_location, "can%'t read PCH file: %m");
++ 
++  /* Read in all the scalar variables.  */
++  for (rt = gt_pch_scalar_rtab; *rt; rt++)
++    for (rti = *rt; rti->base != NULL; rti++)
++      if (fread (rti->base, rti->stride, 1, f) != 1)
++        fatal_error (input_location, "can%'t read PCH file: %m");
++
++  /* Read in all the global pointers, in 6 easy loops.  */
++  for (rt = gt_ggc_rtab; *rt; rt++)
++    for (rti = *rt; rti->base != NULL; rti++)
++      for (i = 0; i < rti->nelt; i++)
++        if (fread ((char *)rti->base + rti->stride * i,
++            sizeof (void *), 1, f) != 1)
++          fatal_error (input_location, "can%'t read PCH file: %m");
++
++  if (fseek (f, pch_data_off, SEEK_SET) != 0)
++    fatal_error (input_location, "can%'t read PCH file: %m");
++
+   ggc_pch_read (f, mmi.preferred_base);
+ 
+   gt_pch_restore_stringpool ();