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authorYao Qi <yao.qi@linaro.org>2016-11-03 14:35:13 +0000
committerYao Qi <yao.qi@linaro.org>2016-11-03 14:35:13 +0000
commitcd6c3b4ffc4ea6f56f12581419e2eed885441beb (patch)
treedd525fa7db9d4373ab5d66189a123e8cb899c28e /gdb/mem-break.c
parentd19280adb5b2d1470dc39756ccac8a8fa2af8321 (diff)
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New gdbarch methods breakpoint_kind_from_pc and sw_breakpoint_from_kind
This patch adds two gdbarch methods breakpoint_kind_from_pc and sw_breakpoint_from_kind, and uses target_info.placed_size as "kind" of the breakpoint. This patch updates the usages of target_info.placed_size. The "kind" of a breakpoint is determined by gdbarch rather than target, so we have gdbarch method breakpoint_kind_from_pc, and we should set target_info.placed_size out of each implementation of target to_insert_breakpoint. In this way, each target doesn't have to set target_info.placed_size any more. This patch also sets target_info.placed_address before target_insert_breakpoint too, so that target to_insert_breakpoint can use it, see record_full_insert_breakpoint. Before we call target_insert_breakpoint, we set target_info.placed_address and target_info.placed_size like this, CORE_ADDR addr = bl->target_info.reqstd_address; bl->target_info.placed_size = gdbarch_breakpoint_kind_from_pc (bl->gdbarch, &addr); bl->target_info.placed_address = addr; return target_insert_breakpoint (bl->gdbarch, &bl->target_info); target_insert_breakpoint may fail, but it doesn't matter to the "kind" and "placed_address" of a breakpoint. They should be determined by gdbarch. gdb: 2016-11-03 Yao Qi <yao.qi@linaro.org> * arch-utils.h (GDBARCH_BREAKPOINT_MANIPULATION): Define breakpoint_kind_from_pc and sw_breakpoint_from_kind. (GDBARCH_BREAKPOINT_MANIPULATION_ENDIAN): Likewise. (SET_GDBARCH_BREAKPOINT_MANIPULATION): Call set_gdbarch_breakpoint_kind_from_pc and set_gdbarch_sw_breakpoint_from_kind. * arm-tdep.c: Add comments. * bfin-tdep.c: Likewise. * breakpoint.c (breakpoint_kind): New function. (insert_bp_location): Set target_info.placed_size and target_info.placed_address. (bkpt_insert_location): Likewise. * cris-tdep.c: Add comments. * gdbarch.sh (breakpoint_kind_from_pc): New. (sw_breakpoint_from_kind): New. * gdbarch.c, gdbarch.h: Regenerated. * ia64-tdep.c (ia64_memory_insert_breakpoint): Don't set bp_tgt->placed_size. (ia64_memory_remove_breakpoint): Don't assert bp_tgt->placed_size. (ia64_breakpoint_kind_from_pc): New function. (ia64_gdbarch_init): Install ia64_breakpoint_kind_from_pc. * m32r-tdep.c (m32r_memory_insert_breakpoint): Don't set bp_tgt->placed_size. * mem-break.c (default_memory_insert_breakpoint): Don't set bp_tgt->placed_size. Call gdbarch_sw_breakpoint_from_kind. (default_memory_remove_breakpoint): Call gdbarch_sw_breakpoint_from_kind. (memory_validate_breakpoint): Don't check bp_tgt->placed_size. * mips-tdep.c: Add comments. * mt-tdep.c: Likewise. * nios2-tdep.c: Likewise. * record-full.c (record_full_insert_breakpoint): Don't call gdbarch_breakpoint_from_pc. Don't set bp_tgt->placed_address and bp_tgt->placed_size. * remote.c (remote_insert_breakpoint): Don't call gdbarch_remote_breakpoint_from_pc. Use bp_tgt->placed_size. Don't set bp_tgt->placed_address and bp_tgt->placed_size. (remote_insert_hw_breakpoint): Likewise. * score-tdep.c: Likewise. * sh-tdep.c: Likewise. * tic6x-tdep.c: Likewise. * v850-tdep.c: Likewise. * xtensa-tdep.c: Likewise.
Diffstat (limited to 'gdb/mem-break.c')
-rw-r--r--gdb/mem-break.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/gdb/mem-break.c b/gdb/mem-break.c
index cc8145c..dafe834 100644
--- a/gdb/mem-break.c
+++ b/gdb/mem-break.c
@@ -44,10 +44,7 @@ default_memory_insert_breakpoint (struct gdbarch *gdbarch,
int val;
/* Determine appropriate breakpoint contents and size for this address. */
- bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen);
-
- bp_tgt->placed_address = addr;
- bp_tgt->placed_size = bplen;
+ bp = gdbarch_sw_breakpoint_from_kind (gdbarch, bp_tgt->placed_size, &bplen);
/* Save the memory contents in the shadow_contents buffer and then
write the breakpoint instruction. */
@@ -77,8 +74,12 @@ int
default_memory_remove_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
+ int bplen;
+
+ gdbarch_sw_breakpoint_from_kind (gdbarch, bp_tgt->placed_size, &bplen);
+
return target_write_raw_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
- bp_tgt->placed_size);
+ bplen);
}
@@ -113,7 +114,7 @@ memory_validate_breakpoint (struct gdbarch *gdbarch,
address. */
bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen);
- if (bp == NULL || bp_tgt->placed_size != bplen)
+ if (bp == NULL)
return 0;
/* Make sure we see the memory breakpoints. */