From fcf303aba3608fe6a3d359f43e3cd52715481825 Mon Sep 17 00:00:00 2001 From: Ulrich Weigand Date: Mon, 30 Jul 2012 15:05:43 +0000 Subject: [PATCH] ChangeLog: * arm-linux-nat.c (arm_linux_hw_breakpoint_initialize): Do not attempt to 4-byte-align HW breakpoint addresses for Thumb. gdbserver/ChangeLog: * linux-arm-low.c (arm_linux_hw_point_initialize): Do not attempt to 4-byte-align HW breakpoint addresses for Thumb. --- gdb/ChangeLog | 5 +++++ gdb/arm-linux-nat.c | 12 +++++++++--- gdb/gdbserver/ChangeLog | 5 +++++ gdb/gdbserver/linux-arm-low.c | 6 +++--- 4 files changed, 22 insertions(+), 6 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 4e83c25973..7ca0070f06 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2012-07-30 Ulrich Weigand + + * arm-linux-nat.c (arm_linux_hw_breakpoint_initialize): Do not + attempt to 4-byte-align HW breakpoint addresses for Thumb. + 2012-07-30 Andrew Burgess * varobj.c (varobj_invalidate_iter): All varobj must be marked as diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c index 2485a84e3a..bf81c032a9 100644 --- a/gdb/arm-linux-nat.c +++ b/gdb/arm-linux-nat.c @@ -896,11 +896,17 @@ arm_linux_hw_breakpoint_initialize (struct gdbarch *gdbarch, /* We have to create a mask for the control register which says which bits of the word pointed to by address to break on. */ if (arm_pc_is_thumb (gdbarch, address)) - mask = 0x3 << (address & 2); + { + mask = 0x3; + address &= ~1; + } else - mask = 0xf; + { + mask = 0xf; + address &= ~3; + } - p->address = (unsigned int) (address & ~3); + p->address = (unsigned int) address; p->control = arm_hwbp_control_initialize (mask, arm_hwbp_break, 1); } diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index 98757963b8..08a8d3adaa 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,8 @@ +2012-07-30 Ulrich Weigand + + * linux-arm-low.c (arm_linux_hw_point_initialize): Do not attempt + to 4-byte-align HW breakpoint addresses for Thumb. + 2012-07-27 Yao Qi PR remote/14161. diff --git a/gdb/gdbserver/linux-arm-low.c b/gdb/gdbserver/linux-arm-low.c index c4d2000c3b..10370834fc 100644 --- a/gdb/gdbserver/linux-arm-low.c +++ b/gdb/gdbserver/linux-arm-low.c @@ -474,17 +474,17 @@ arm_linux_hw_point_initialize (char type, CORE_ADDR addr, int len, { case 2: /* 16-bit Thumb mode breakpoint */ case 3: /* 32-bit Thumb mode breakpoint */ - mask = 0x3 << (addr & 2); + mask = 0x3; + addr &= ~1; break; case 4: /* 32-bit ARM mode breakpoint */ mask = 0xf; + addr &= ~3; break; default: /* Unsupported. */ return -1; } - - addr &= ~3; } else {