diff options
Diffstat (limited to 'toolchain/binutils/patches/2.29.1/xtensa-fix-memory-corruption-by-broken-sysregs.patch')
-rw-r--r-- | toolchain/binutils/patches/2.29.1/xtensa-fix-memory-corruption-by-broken-sysregs.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/toolchain/binutils/patches/2.29.1/xtensa-fix-memory-corruption-by-broken-sysregs.patch b/toolchain/binutils/patches/2.29.1/xtensa-fix-memory-corruption-by-broken-sysregs.patch deleted file mode 100644 index 30103ee05..000000000 --- a/toolchain/binutils/patches/2.29.1/xtensa-fix-memory-corruption-by-broken-sysregs.patch +++ /dev/null @@ -1,42 +0,0 @@ -From 3c8788dbb70b40e737d4b8e30cab81406e5c5091 Mon Sep 17 00:00:00 2001 -From: Max Filippov <jcmvbkbc@gmail.com> -Date: Wed, 2 Aug 2017 00:36:05 -0700 -Subject: [PATCH] xtensa: fix memory corruption by broken sysregs - -In some xtensa configurations there may be system/user registers in -xtensa-modules with negative index. ISA initialization for such config -may clobber heap and result in program termination. -Don't update lookup table entries for register with negative indices. -They are not directly accessible via RSR/WSR/XSR or RUR/WUR, so this -change should not affect processing of valid assembly/binary code. - -bfd/ -2017-08-02 Max Filippov <jcmvbkbc@gmail.com> - - * xtensa-isa.c (xtensa_isa_init): Don't update lookup table - entries for sysregs with negative indices. - -Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> ---- -Backported from: d84ed528d4817b0ff854006b65a9f6ec75f0407a - - bfd/xtensa-isa.c | 3 ++- - 1 file changed, 2 insertions(+), 1 deletion(-) - -diff --git a/bfd/xtensa-isa.c b/bfd/xtensa-isa.c -index 8da75bea8109..8c6ee88fdeae 100644 ---- a/bfd/xtensa-isa.c -+++ b/bfd/xtensa-isa.c -@@ -292,7 +292,8 @@ xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p) - xtensa_sysreg_internal *sreg = &isa->sysregs[n]; - is_user = sreg->is_user; - -- isa->sysreg_table[is_user][sreg->number] = n; -+ if (sreg->number >= 0) -+ isa->sysreg_table[is_user][sreg->number] = n; - } - - /* Set up the interface lookup table. */ --- -2.1.4 - |