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gnu: binutils: apply fixes and workarounds for Loongson 2F CPUs. 

* gnu/packages/patches/binutils-loongson-madd-fix.patch: New file.
* gnu/packages/patches/binutils-loongson-workaround.patch: New file.
* gnu/packages/base.scm (binutils): Add patches.
* gnu-system.am (dist_patch_DATA): Add patches.
master
Mark H Weaver 2013-11-03 18:08:33 -05:00
parent 69f777d14c
commit 2c1ceeacdf
4 changed files with 83 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
gnu-system.am
View File

@ -207,6 +207,8 @@ dist_patch_DATA = \
gnu/packages/patches/avahi-localstatedir.patch \
gnu/packages/patches/bigloo-gc-shebangs.patch \
gnu/packages/patches/binutils-ld-new-dtags.patch \
gnu/packages/patches/binutils-loongson-madd-fix.patch \
gnu/packages/patches/binutils-loongson-workaround.patch \
gnu/packages/patches/cdparanoia-fpic.patch \
gnu/packages/patches/cmake-fix-tests.patch \
gnu/packages/patches/cpio-gets-undeclared.patch \

4
gnu/packages/base.scm
View File

@ -321,7 +321,9 @@ change.")
(sha256
(base32
"15qhbkz3r266xaa52slh857qn3abw7rb2x2jnhpfrafpzrb4x4gy"))
(patches (list (search-patch "binutils-ld-new-dtags.patch")))))
(patches (list (search-patch "binutils-ld-new-dtags.patch")
(search-patch "binutils-loongson-workaround.patch")
(search-patch "binutils-loongson-madd-fix.patch")))))
(build-system gnu-build-system)
;; Split Binutils in several outputs, mostly to avoid collisions in

44
gnu/packages/patches/binutils-loongson-madd-fix.patch Normal file
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@ -0,0 +1,44 @@
Fix the Loongson 2F specific fused multiply-add instructions on paired singles to
use the encoding recognized by the processor, as opposed to the mistaken english
Loongson 2F documentation.
Patch by Mark H Weaver <mhw@netris.org>.
--- binutils/opcodes/mips-opc.c.orig 2012-09-04 10:21:10.000000000 -0400
+++ binutils/opcodes/mips-opc.c 2013-10-06 02:23:33.679983766 -0400
@@ -931,7 +931,7 @@
{"madd.s", "D,S,T", 0x72000018, 0xffe0003f, RD_S|RD_T|WR_D|FP_S, 0, IL2F },
{"madd.ps", "D,R,S,T", 0x4c000026, 0xfc00003f, RD_R|RD_S|RD_T|WR_D|FP_D, 0, I5_33 },
{"madd.ps", "D,S,T", 0x45600018, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2E },
-{"madd.ps", "D,S,T", 0x71600018, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
+{"madd.ps", "D,S,T", 0x72c00018, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
{"madd", "s,t", 0x0000001c, 0xfc00ffff, RD_s|RD_t|WR_HILO, 0, L1 },
{"madd", "s,t", 0x70000000, 0xfc00ffff, RD_s|RD_t|MOD_HILO, 0, I32|N55 },
{"madd", "s,t", 0x70000000, 0xfc00ffff, RD_s|RD_t|WR_HILO|IS_M, 0, G1 },
@@ -1041,7 +1041,7 @@
{"msub.s", "D,S,T", 0x72000019, 0xffe0003f, RD_S|RD_T|WR_D|FP_S, 0, IL2F },
{"msub.ps", "D,R,S,T", 0x4c00002e, 0xfc00003f, RD_R|RD_S|RD_T|WR_D|FP_D, 0, I5_33 },
{"msub.ps", "D,S,T", 0x45600019, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2E },
-{"msub.ps", "D,S,T", 0x71600019, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
+{"msub.ps", "D,S,T", 0x72c00019, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
{"msub", "s,t", 0x0000001e, 0xfc00ffff, RD_s|RD_t|WR_HILO, 0, L1 },
{"msub", "s,t", 0x70000004, 0xfc00ffff, RD_s|RD_t|MOD_HILO, 0, I32|N55 },
{"msub", "7,s,t", 0x70000004, 0xfc00e7ff, MOD_a|RD_s|RD_t, 0, D32 },
@@ -1157,7 +1157,7 @@
{"nmadd.s", "D,S,T", 0x7200001a, 0xffe0003f, RD_S|RD_T|WR_D|FP_S, 0, IL2F },
{"nmadd.ps","D,R,S,T", 0x4c000036, 0xfc00003f, RD_R|RD_S|RD_T|WR_D|FP_D, 0, I5_33 },
{"nmadd.ps", "D,S,T", 0x4560001a, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2E },
-{"nmadd.ps", "D,S,T", 0x7160001a, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
+{"nmadd.ps", "D,S,T", 0x72c0001a, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
{"nmsub.d", "D,R,S,T", 0x4c000039, 0xfc00003f, RD_R|RD_S|RD_T|WR_D|FP_D, 0, I4_33 },
{"nmsub.d", "D,S,T", 0x4620001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2E },
{"nmsub.d", "D,S,T", 0x7220001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
@@ -1166,7 +1166,7 @@
{"nmsub.s", "D,S,T", 0x7200001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_S, 0, IL2F },
{"nmsub.ps","D,R,S,T", 0x4c00003e, 0xfc00003f, RD_R|RD_S|RD_T|WR_D|FP_D, 0, I5_33 },
{"nmsub.ps", "D,S,T", 0x4560001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2E },
-{"nmsub.ps", "D,S,T", 0x7160001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
+{"nmsub.ps", "D,S,T", 0x72c0001b, 0xffe0003f, RD_S|RD_T|WR_D|FP_D, 0, IL2F },
/* nop is at the start of the table. */
{"nor", "d,v,t", 0x00000027, 0xfc0007ff, WR_d|RD_s|RD_t, 0, I1 },
{"nor", "t,r,I", 0, (int) M_NOR_I, INSN_MACRO, 0, I1 },

34
gnu/packages/patches/binutils-loongson-workaround.patch Normal file
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@ -0,0 +1,34 @@
Enable the workaround for the Loongson 2F bug by default.
Patch by Mark H Weaver <mhw@netris.org>.
--- binutils/gas/config/tc-mips.c.orig 2012-09-04 10:21:03.000000000 -0400
+++ binutils/gas/config/tc-mips.c 2013-10-06 02:23:21.651983768 -0400
@@ -910,10 +910,10 @@
};
/* ...likewise -mfix-loongson2f-jump. */
-static bfd_boolean mips_fix_loongson2f_jump;
+static bfd_boolean mips_fix_loongson2f_jump = FALSE;
/* ...likewise -mfix-loongson2f-nop. */
-static bfd_boolean mips_fix_loongson2f_nop;
+static bfd_boolean mips_fix_loongson2f_nop = TRUE;
/* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed. */
static bfd_boolean mips_fix_loongson2f;
--- binutils/gas/testsuite/gas/mips/mips.exp.orig 2012-09-04 10:17:13.000000000 -0400
+++ binutils/gas/testsuite/gas/mips/mips.exp 2013-10-06 02:23:21.663983768 -0400
@@ -91,6 +91,12 @@
# Catch because the variable won't be set the first time through.
catch {unset mips_arches}
+
+ # Disable the loongson2f nop fix by default, because most of the
+ # existing test cases for mips will fail otherwise.
+ global ASFLAGS
+ set old_ASFLAGS "$ASFLAGS"
+ set ASFLAGS "$ASFLAGS -mno-fix-loongson2f-nop"
}
# mips_arch_create ARCH GPRSIZE EXTENDS PROPS AS_FLAGS OBJDUMP_FLAGS \