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@ -1,5 +1,5 @@ |
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/* Native macro definitions for GDB on an Intel i[3456]86.
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Copyright (C) 2001 Free Software Foundation, Inc. |
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Copyright 2001 Free Software Foundation, Inc. |
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This file is part of GDB. |
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@ -21,13 +21,11 @@ |
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#ifndef NM_I386_H |
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#define NM_I386_H 1 |
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/* Hardware-assisted breakpoints and watchpoints. */ |
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/* Targets should define this to use the generic x86 watchpoint support. */ |
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#ifdef I386_USE_GENERIC_WATCHPOINTS |
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#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS |
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#define TARGET_HAS_HARDWARE_WATCHPOINTS |
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#endif |
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@ -38,20 +36,20 @@ extern void i386_cleanup_dregs (void); |
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/* Insert a watchpoint to watch a memory region which starts at
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address ADDR and whose length is LEN bytes. Watch memory accesses |
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of the type TYPE. Return 0 on success, -1 on failure. */ |
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extern int i386_insert_watchpoint (CORE_ADDR addr, int len, int type); |
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extern int i386_insert_watchpoint (CORE_ADDR addr, int len, int type); |
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/* Remove a watchpoint that watched the memory region which starts at
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address ADDR, whose length is LEN bytes, and for accesses of the |
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type TYPE. Return 0 on success, -1 on failure. */ |
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extern int i386_remove_watchpoint (CORE_ADDR addr, int len, int type); |
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extern int i386_remove_watchpoint (CORE_ADDR addr, int len, int type); |
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/* Return non-zero if we can watch a memory region that starts at
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address ADDR and whose length is LEN bytes. */ |
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extern int i386_region_ok_for_watchpoint (CORE_ADDR addr, int len); |
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extern int i386_region_ok_for_watchpoint (CORE_ADDR addr, int len); |
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/* Return non-zero if the inferior has some break/watchpoint that
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triggered. */ |
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extern int i386_stopped_by_hwbp (void); |
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extern int i386_stopped_by_hwbp (void); |
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/* If the inferior has some break/watchpoint that triggered, return
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the address associated with that break/watchpoint. Otherwise, |
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@ -60,10 +58,10 @@ extern CORE_ADDR i386_stopped_data_address (void); |
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/* Insert a hardware-assisted breakpoint at address ADDR. SHADOW is
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unused. Return 0 on success, EBUSY on failure. */ |
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extern int i386_insert_hw_breakpoint (CORE_ADDR addr, void *shadow); |
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extern int i386_insert_hw_breakpoint (CORE_ADDR addr, void *shadow); |
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/* Remove a hardware-assisted breakpoint at address ADDR. SHADOW is
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unused. Return 0 on success, -1 on failure. */ |
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unused. Return 0 on success, -1 on failure. */ |
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extern int i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow); |
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/* Returns the number of hardware watchpoints of type TYPE that we can
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@ -77,19 +75,19 @@ extern int i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow); |
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currently enabled. |
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We always return 1 here because we don't have enough information |
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about possible overlap of addresses that they want to watch. As |
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an extreme example, consider the case where all the watchpoints |
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watch the same address and the same region length: then we can |
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handle a virtually unlimited number of watchpoints, due to debug |
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register sharing implemented via reference counts in i386-tdep.c. */ |
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about possible overlap of addresses that they want to watch. As an |
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extreme example, consider the case where all the watchpoints watch |
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the same address and the same region length: then we can handle a |
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virtually unlimited number of watchpoints, due to debug register |
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sharing implemented via reference counts in i386-nat.c. */ |
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#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) 1 |
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/* Returns non-zero if we can use hardware watchpoints to watch a region
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whose address is ADDR and whose length is LEN. */ |
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/* Returns non-zero if we can use hardware watchpoints to watch a
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region whose address is ADDR and whose length is LEN. */ |
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#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr,len) \ |
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i386_region_ok_for_watchpoint(addr,len) |
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#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr, len) \ |
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i386_region_ok_for_watchpoint (addr, len) |
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/* After a watchpoint trap, the PC points to the instruction after the
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one that caused the trap. Therefore we don't need to step over it. |
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@ -103,17 +101,17 @@ extern int i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow); |
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/* Use these macros for watchpoint insertion/removal. */ |
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#define target_insert_watchpoint(addr, len, type) \ |
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#define target_insert_watchpoint(addr, len, type) \ |
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i386_insert_watchpoint (addr, len, type) |
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#define target_remove_watchpoint(addr, len, type) \ |
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#define target_remove_watchpoint(addr, len, type) \ |
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i386_remove_watchpoint (addr, len, type) |
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#define target_insert_hw_breakpoint(addr, shadow) \ |
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i386_insert_hw_breakpoint(addr, shadow) |
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#define target_insert_hw_breakpoint(addr, shadow) \ |
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i386_insert_hw_breakpoint (addr, shadow) |
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#define target_remove_hw_breakpoint(addr, shadow) \ |
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i386_remove_hw_breakpoint(addr, shadow) |
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#define target_remove_hw_breakpoint(addr, shadow) \ |
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i386_remove_hw_breakpoint (addr, shadow) |
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#define DECR_PC_AFTER_HW_BREAK 0 |
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