From a4165e94f452b3137a1071a5034853a93a9de1a2 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Tue, 22 Apr 2014 19:47:04 +0100 Subject: [PATCH] gdbserver: decouple x86 watchpoint / hw breakpoint routines from Z packet numbers. My main motivation here is moving in the direction of decoupling insert_point/remove_point from packet numbers, though this bit alone should make it a little bit easier to merge gdb/gdbserver/i386-low.c and gdb/i386-nat.c (which are largely the same). Tested on x86_64 Fedora 17, and cross built for i686-mingw32 too. gdb/gdbserver/ 2014-04-23 Pedro Alves * i386-low.c: Don't include break-common.h here. (i386_low_insert_watchpoint, i386_low_remove_watchpoint): Change prototype to take target_hw_bp_type as argument instead of a Z packet char. * i386-low.h: Include break-common.h here. (Z_packet_to_hw_type): Declare. (i386_low_insert_watchpoint, i386_low_remove_watchpoint): Change prototypes. * linux-x86-low.c (x86_insert_point): Convert the packet number to a target_hw_bp_type before calling i386_low_insert_watchpoint. (x86_remove_point): Convert the packet number to a target_hw_bp_type before calling i386_low_remove_watchpoint. * win32-i386-low.c (i386_insert_point): Convert the packet number to a target_hw_bp_type before calling i386_low_insert_watchpoint. (i386_remove_point): Convert the packet number to a target_hw_bp_type before calling i386_low_remove_watchpoint. --- gdb/gdbserver/ChangeLog | 19 +++++++++++++++++++ gdb/gdbserver/i386-low.c | 15 ++++++--------- gdb/gdbserver/i386-low.h | 15 +++++++++++---- gdb/gdbserver/linux-x86-low.c | 18 ++++++++++++++---- gdb/gdbserver/win32-i386-low.c | 16 ++++++++++++---- 5 files changed, 62 insertions(+), 21 deletions(-) diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index ad2b1ae..c419e43 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,5 +1,24 @@ 2014-04-23 Pedro Alves + * i386-low.c: Don't include break-common.h here. + (i386_low_insert_watchpoint, i386_low_remove_watchpoint): Change + prototype to take target_hw_bp_type as argument instead of a Z + packet char. + * i386-low.h: Include break-common.h here. + (Z_packet_to_hw_type): Declare. + (i386_low_insert_watchpoint, i386_low_remove_watchpoint): Change + prototypes. + * linux-x86-low.c (x86_insert_point): Convert the packet number to + a target_hw_bp_type before calling i386_low_insert_watchpoint. + (x86_remove_point): Convert the packet number to a + target_hw_bp_type before calling i386_low_remove_watchpoint. + * win32-i386-low.c (i386_insert_point): Convert the packet number + to a target_hw_bp_type before calling i386_low_insert_watchpoint. + (i386_remove_point): Convert the packet number to a + target_hw_bp_type before calling i386_low_remove_watchpoint. + +2014-04-23 Pedro Alves + * utils.h (perror_with_name): Add ATTRIBUTE_NORETURN. 2014-04-10 Pedro Alves diff --git a/gdb/gdbserver/i386-low.c b/gdb/gdbserver/i386-low.c index 33ef0a4..03eebd1 100644 --- a/gdb/gdbserver/i386-low.c +++ b/gdb/gdbserver/i386-low.c @@ -20,7 +20,6 @@ #include "server.h" #include "target.h" #include "i386-low.h" -#include "break-common.h" /* Support for 8-byte wide hw watchpoints. */ #ifndef TARGET_HAS_DR_LEN_8 @@ -408,9 +407,7 @@ Invalid value %d of operation in i386_handle_nonaligned_watchpoint.\n", #define Z_PACKET_READ_WP '3' #define Z_PACKET_ACCESS_WP '4' -/* Map the protocol watchpoint type TYPE to enum target_hw_bp_type. */ - -static enum target_hw_bp_type +enum target_hw_bp_type Z_packet_to_hw_type (char type) { switch (type) @@ -457,10 +454,10 @@ i386_update_inferior_debug_regs (struct i386_debug_reg_state *inf_state, int i386_low_insert_watchpoint (struct i386_debug_reg_state *state, - char type_from_packet, CORE_ADDR addr, int len) + enum target_hw_bp_type type, + CORE_ADDR addr, int len) { int retval; - enum target_hw_bp_type type = Z_packet_to_hw_type (type_from_packet); /* Work on a local copy of the debug registers, and on success, commit the change back to the inferior. */ struct i386_debug_reg_state local_state = *state; @@ -493,14 +490,14 @@ i386_low_insert_watchpoint (struct i386_debug_reg_state *state, /* Remove a watchpoint that watched the memory region which starts at address ADDR, whose length is LEN bytes, and for accesses of the - type TYPE_FROM_PACKET. Return 0 on success, -1 on failure. */ + type TYPE. Return 0 on success, -1 on failure. */ int i386_low_remove_watchpoint (struct i386_debug_reg_state *state, - char type_from_packet, CORE_ADDR addr, int len) + enum target_hw_bp_type type, + CORE_ADDR addr, int len) { int retval; - enum target_hw_bp_type type = Z_packet_to_hw_type (type_from_packet); /* Work on a local copy of the debug registers, and on success, commit the change back to the inferior. */ struct i386_debug_reg_state local_state = *state; diff --git a/gdb/gdbserver/i386-low.h b/gdb/gdbserver/i386-low.h index 1a4e3cc..d91c90a 100644 --- a/gdb/gdbserver/i386-low.h +++ b/gdb/gdbserver/i386-low.h @@ -29,6 +29,11 @@ counts, and allow to watch regions up to 16 bytes long (32 bytes on 64 bit hosts). */ +#include "break-common.h" + +/* Map the protocol watchpoint type TYPE to enum target_hw_bp_type. */ + +enum target_hw_bp_type Z_packet_to_hw_type (char type); /* Debug registers' indices. */ #define DR_FIRSTADDR 0 @@ -58,16 +63,18 @@ extern void i386_low_init_dregs (struct i386_debug_reg_state *state); /* Insert a watchpoint to watch a memory region which starts at address ADDR and whose length is LEN bytes. Watch memory accesses - of the type TYPE_FROM_PACKET. Return 0 on success, -1 on failure. */ + of the type TYPE. Return 0 on success, -1 on failure. */ extern int i386_low_insert_watchpoint (struct i386_debug_reg_state *state, - char type_from_packet, CORE_ADDR addr, + enum target_hw_bp_type type, + CORE_ADDR addr, int len); /* Remove a watchpoint that watched the memory region which starts at address ADDR, whose length is LEN bytes, and for accesses of the - type TYPE_FROM_PACKET. Return 0 on success, -1 on failure. */ + type TYPE. Return 0 on success, -1 on failure. */ extern int i386_low_remove_watchpoint (struct i386_debug_reg_state *state, - char type_from_packet, CORE_ADDR addr, + enum target_hw_bp_type type, + CORE_ADDR addr, int len); /* Return non-zero if we can watch a memory region that starts at diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c index 33b5f26..2f518b19 100644 --- a/gdb/gdbserver/linux-x86-low.c +++ b/gdb/gdbserver/linux-x86-low.c @@ -641,8 +641,13 @@ x86_insert_point (char type, CORE_ADDR addr, int len) case '2': /* write watchpoint */ case '3': /* read watchpoint */ case '4': /* access watchpoint */ - return i386_low_insert_watchpoint (&proc->private->arch_private->debug_reg_state, - type, addr, len); + { + enum target_hw_bp_type hw_type = Z_packet_to_hw_type (type); + struct i386_debug_reg_state *state + = &proc->private->arch_private->debug_reg_state; + + return i386_low_insert_watchpoint (state, hw_type, addr, len); + } default: /* Unsupported. */ @@ -671,8 +676,13 @@ x86_remove_point (char type, CORE_ADDR addr, int len) case '2': /* write watchpoint */ case '3': /* read watchpoint */ case '4': /* access watchpoint */ - return i386_low_remove_watchpoint (&proc->private->arch_private->debug_reg_state, - type, addr, len); + { + enum target_hw_bp_type hw_type = Z_packet_to_hw_type (type); + struct i386_debug_reg_state *state + = &proc->private->arch_private->debug_reg_state; + + return i386_low_remove_watchpoint (state, hw_type, addr, len); + } default: /* Unsupported. */ return 1; diff --git a/gdb/gdbserver/win32-i386-low.c b/gdb/gdbserver/win32-i386-low.c index 1cb0c5f..ce9b303 100644 --- a/gdb/gdbserver/win32-i386-low.c +++ b/gdb/gdbserver/win32-i386-low.c @@ -105,8 +105,12 @@ i386_insert_point (char type, CORE_ADDR addr, int len) case '2': case '3': case '4': - return i386_low_insert_watchpoint (&debug_reg_state, - type, addr, len); + { + enum target_hw_bp_type hw_type = Z_packet_to_hw_type (type); + + return i386_low_insert_watchpoint (&debug_reg_state, + hw_type, addr, len); + } default: /* Unsupported. */ return 1; @@ -121,8 +125,12 @@ i386_remove_point (char type, CORE_ADDR addr, int len) case '2': case '3': case '4': - return i386_low_remove_watchpoint (&debug_reg_state, - type, addr, len); + { + enum target_hw_bp_type hw_type = Z_packet_to_hw_type (type); + + return i386_low_remove_watchpoint (&debug_reg_state, + hw_type, addr, len); + } default: /* Unsupported. */ return 1; -- 2.7.4