From 244ec0da3816472b6e2c3347dae8b2d308d90f93 Mon Sep 17 00:00:00 2001 From: Walfred Tedeschi Date: Tue, 26 Nov 2013 08:32:16 +0000 Subject: [PATCH] Fix PR16193 - gdbserver aborts. The MPX patch has broken the I386_XSTATE_SIZE macro. For AVX machines, it ends up returning I386_XSTATE_SSE_SIZE. Where it first reads I386_XSTATE_AVX_SIZE, it should have read I386_XSTATE_AVX: #define I386_XSTATE_SIZE(XCR0) \ (((XCR0) & I386_XSTATE_BNDCFG) != 0 ? I386_XSTATE_BNDCFG_SIZE \ : (((XCR0) & I386_XSTATE_BNDREGS) != 0 ? I386_XSTATE_BNDCFG_SIZE \ - : (((XCR0) & I386_XSTATE_AVX_SIZE) != 0 ? I386_XSTATE_AVX_SIZE \ + : (((XCR0) & I386_XSTATE_AVX) != 0 ? I386_XSTATE_AVX_SIZE \ : I386_XSTATE_SSE_SIZE))) The patch goes a step further and improves readability of the macro, by adding a couple other auxiliary macros. 2013-11-26 Walfred Tedeschi * i386-xstate.h (I386_XSTATE_MPX): New Macro. (I386_XSTATE_MPX_MASK): Makes use of I386_XSTATE_MPX. (HAS_MPX): New macro. (HAS_AVX): New macro. (I386_XSTATE_SIZE): Uses HAS_MPX and HAS_AVX. --- gdb/ChangeLog | 8 ++++++++ gdb/common/i386-xstate.h | 15 ++++++++------- 2 files changed, 16 insertions(+), 7 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index cb5dd1536e5..eb30c9d5bf4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2013-11-26 Walfred Tedeschi + + * i386-xstate.h (I386_XSTATE_MPX): New Macro. + (I386_XSTATE_MPX_MASK): Makes use of I386_XSTATE_MPX. + (HAS_MPX): New macro. + (HAS_AVX): New macro. + (I386_XSTATE_SIZE): Uses HAS_MPX and HAS_AVX. + 2013-11-25 Keith Seitz PR c++/14819 diff --git a/gdb/common/i386-xstate.h b/gdb/common/i386-xstate.h index e76ecc14045..c4b8c8a1f14 100644 --- a/gdb/common/i386-xstate.h +++ b/gdb/common/i386-xstate.h @@ -26,14 +26,13 @@ #define I386_XSTATE_AVX (1ULL << 2) #define I386_XSTATE_BNDREGS (1ULL << 3) #define I386_XSTATE_BNDCFG (1ULL << 4) +#define I386_XSTATE_MPX (I386_XSTATE_BNDREGS | I386_XSTATE_BNDCFG) /* Supported mask and size of the extended state. */ #define I386_XSTATE_X87_MASK I386_XSTATE_X87 #define I386_XSTATE_SSE_MASK (I386_XSTATE_X87 | I386_XSTATE_SSE) #define I386_XSTATE_AVX_MASK (I386_XSTATE_SSE_MASK | I386_XSTATE_AVX) -#define I386_XSTATE_MPX_MASK (I386_XSTATE_AVX_MASK \ - | I386_XSTATE_BNDREGS \ - | I386_XSTATE_BNDCFG) +#define I386_XSTATE_MPX_MASK (I386_XSTATE_AVX_MASK | I386_XSTATE_MPX) #define I386_XSTATE_ALL_MASK I386_XSTATE_MPX_MASK @@ -44,11 +43,13 @@ #define I386_XSTATE_MAX_SIZE 1088 +/* In case one of the MPX XCR0 bits is set we consider we have MPX. */ +#define HAS_MPX(XCR0) (((XCR0) & I386_XSTATE_MPX) != 0) +#define HAS_AVX(XCR0) (((XCR0) & I386_XSTATE_AVX) != 0) + /* Get I386 XSAVE extended state size. */ #define I386_XSTATE_SIZE(XCR0) \ - (((XCR0) & I386_XSTATE_BNDCFG) != 0 ? I386_XSTATE_BNDCFG_SIZE \ - : (((XCR0) & I386_XSTATE_BNDREGS) != 0 ? I386_XSTATE_BNDCFG_SIZE \ - : (((XCR0) & I386_XSTATE_AVX_SIZE) != 0 ? I386_XSTATE_AVX_SIZE \ - : I386_XSTATE_SSE_SIZE))) + (HAS_MPX (XCR0) ? I386_XSTATE_BNDCFG_SIZE : \ + (HAS_AVX (XCR0) ? I386_XSTATE_AVX_SIZE : I386_XSTATE_SSE_SIZE)) #endif /* I386_XSTATE_H */ -- 2.30.2