mirror of
https://github.com/tobast/libunwind-eh_elf.git
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Drop argument names from prototypes to reduce namespace pollution.
Define libunwind routines such that it is possible to take their addresses. (unw_is_fpreg): Move it closer to unw_getcontext(). Both are special in the sense that they may be implemented as macros. (Logical change 1.156)
This commit is contained in:
mostang.com!davidm
parent
7915b799c8
commit
53b6d61c63
1 changed files with 61 additions and 195 deletions
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@ -1,5 +1,5 @@
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2003 Hewlett-Packard Co
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Copyright (C) 2001-2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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@ -98,7 +98,12 @@ typedef unw_tdep_context_t unw_context_t;
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machine state as it exists at the call-site. For implementation
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reasons, this needs to be a target-dependent macro. It's easiest
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to think of unw_getcontext() as being identical to getcontext(). */
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#define unw_getcontext(uc) unw_tdep_getcontext(uc)
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#define unw_getcontext(uc) unw_tdep_getcontext(uc)
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/* Return 1 if register number R is a floating-point register, zero
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otherwise.
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This routine is signal-safe. */
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#define unw_is_fpreg(r) unw_tdep_is_fpreg(r)
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typedef unw_tdep_fpreg_t unw_fpreg_t;
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@ -131,47 +136,41 @@ typedef struct unw_accessors
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{
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/* Look up the unwind info associated with instruction-pointer IP.
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On success, the routine fills in the PROC_INFO structure. */
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int (*find_proc_info) (unw_addr_space_t as, unw_word_t ip,
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unw_proc_info_t *proc_info,
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int need_unwind_info,
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void *arg);
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int (*find_proc_info) (unw_addr_space_t, unw_word_t, unw_proc_info_t *,
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int, void *);
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/* Release any resources (e.g., memory) that were allocated for
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the unwind info returned in by a previous call to
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find_proc_info() with NEED_UNWIND_INFO set to 1. */
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void (*put_unwind_info) (unw_addr_space_t as, unw_proc_info_t *proc_info,
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void *arg);
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void (*put_unwind_info) (unw_addr_space_t, unw_proc_info_t *, void *);
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/* Return the list-head of the dynamically registered unwind
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info. */
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int (*get_dyn_info_list_addr) (unw_addr_space_t as,
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unw_word_t *dyn_info_list_addr,
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void *arg);
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int (*get_dyn_info_list_addr) (unw_addr_space_t, unw_word_t *, void *);
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/* Access aligned word at address ADDR. The value is returned
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according to the endianness of the host (e.g., if the host is
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little-endian and the target is big-endian, access_mem() needs
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to byte-swap the value before returning it). */
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int (*access_mem) (unw_addr_space_t as, unw_word_t addr,
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unw_word_t *val, int write, void *arg);
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int (*access_mem) (unw_addr_space_t, unw_word_t, unw_word_t *, int,
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void *);
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/* Access register number REG at address ADDR. */
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int (*access_reg) (unw_addr_space_t as, unw_regnum_t reg,
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unw_word_t *val, int write, void *arg);
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int (*access_reg) (unw_addr_space_t, unw_regnum_t, unw_word_t *, int,
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void *);
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/* Access register number REG at address ADDR. */
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int (*access_fpreg) (unw_addr_space_t as, unw_regnum_t reg,
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unw_fpreg_t *val, int write, void *arg);
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int (*access_fpreg) (unw_addr_space_t, unw_regnum_t,
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unw_fpreg_t *, int, void *);
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int (*resume) (unw_addr_space_t as, unw_cursor_t *c, void *arg);
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int (*resume) (unw_addr_space_t, unw_cursor_t *, void *);
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/* Optional call back to obtain the name of a (static) procedure.
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Dynamically generated procedures are handled automatically by
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libunwind. This callback is optional and may be set to
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NULL. */
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int (*get_proc_name) (unw_addr_space_t as, unw_word_t addr,
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char *buf, size_t buf_len, unw_word_t *offp,
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void *arg);
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int (*get_proc_name) (unw_addr_space_t, unw_word_t, char *, size_t,
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unw_word_t *, void *);
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}
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unw_accessors_t;
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@ -198,180 +197,47 @@ unw_save_loc_t;
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/* These routines work both for local and remote unwinding. */
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extern unw_addr_space_t UNW_OBJ(local_addr_space);
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#define unw_local_addr_space UNW_OBJ(local_addr_space)
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#define unw_create_addr_space UNW_OBJ(create_addr_space)
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#define unw_destroy_addr_space UNW_OBJ(destroy_addr_space)
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#define unw_get_accessors UNW_ARCH_OBJ(get_accessors)
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#define unw_init_local UNW_OBJ(init_local)
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#define unw_init_remote UNW_OBJ(init_remote)
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#define unw_step UNW_OBJ(step)
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#define unw_resume UNW_OBJ(resume)
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#define unw_get_proc_info UNW_OBJ(get_proc_info)
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#define unw_get_proc_info_by_ip UNW_OBJ(get_proc_info_by_ip)
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#define unw_get_reg UNW_OBJ(get_reg)
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#define unw_set_reg UNW_OBJ(set_reg)
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#define unw_get_fpreg UNW_OBJ(get_fpreg)
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#define unw_set_fpreg UNW_OBJ(set_fpreg)
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#define unw_get_save_loc UNW_OBJ(get_save_loc)
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#define unw_is_signal_frame UNW_OBJ(is_signal_frame)
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#define unw_get_proc_name UNW_OBJ(get_proc_name)
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#define unw_regname UNW_ARCH_OBJ(regname)
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#define unw_set_caching_policy UNW_ARCH_OBJ(set_caching_policy)
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#define unw_flush_cache UNW_ARCH_OBJ(flush_cache)
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extern unw_addr_space_t UNW_OBJ(create_addr_space) (unw_accessors_t *a,
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int byte_order);
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extern void UNW_OBJ(destroy_addr_space) (unw_addr_space_t as);
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extern unw_accessors_t *UNW_ARCH_OBJ(get_accessors) (unw_addr_space_t as);
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extern void UNW_ARCH_OBJ(flush_cache)(unw_addr_space_t as,
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unw_word_t lo, unw_word_t hi);
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extern int UNW_ARCH_OBJ(set_caching_policy)(unw_addr_space_t as,
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unw_caching_policy_t policy);
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extern const char *UNW_ARCH_OBJ(regname) (unw_regnum_t regnum);
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extern unw_addr_space_t unw_create_addr_space (unw_accessors_t *, int);
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extern void unw_destroy_addr_space (unw_addr_space_t);
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extern unw_accessors_t *unw_get_accessors (unw_addr_space_t);
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extern void unw_flush_cache (unw_addr_space_t, unw_word_t, unw_word_t);
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extern int unw_set_caching_policy (unw_addr_space_t, unw_caching_policy_t);
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extern const char *unw_regname (unw_regnum_t);
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extern int UNW_OBJ(init_local) (unw_cursor_t *c, unw_context_t *u);
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extern int UNW_OBJ(init_remote) (unw_cursor_t *c, unw_addr_space_t as,
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void *as_arg);
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extern int UNW_OBJ(step) (unw_cursor_t *c);
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extern int UNW_OBJ(resume) (unw_cursor_t *c);
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extern int UNW_OBJ(get_proc_info) (unw_cursor_t *c, unw_proc_info_t *pi);
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extern int UNW_OBJ(get_proc_info_by_ip) (unw_addr_space_t as, unw_word_t ip,
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unw_proc_info_t *pi, void *as_arg);
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extern int UNW_OBJ(get_reg) (unw_cursor_t *c, int regnum, unw_word_t *valp);
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extern int UNW_OBJ(set_reg) (unw_cursor_t *c, int regnum, unw_word_t val);
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extern int UNW_OBJ(get_fpreg) (unw_cursor_t *c, int regnum, unw_fpreg_t *val);
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extern int UNW_OBJ(set_fpreg) (unw_cursor_t *c, int regnum, unw_fpreg_t val);
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extern int UNW_OBJ(get_save_loc) (unw_cursor_t *c, int regnum,
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unw_save_loc_t *loc);
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extern int UNW_OBJ(is_signal_frame) (unw_cursor_t *c);
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extern int UNW_OBJ(get_proc_name) (unw_cursor_t *c, char *buf, size_t buf_len,
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unw_word_t *offsetp);
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extern int unw_init_local (unw_cursor_t *, unw_context_t *);
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extern int unw_init_remote (unw_cursor_t *, unw_addr_space_t, void *);
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extern int unw_step (unw_cursor_t *);
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extern int unw_resume (unw_cursor_t *);
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extern int unw_get_proc_info (unw_cursor_t *, unw_proc_info_t *);
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extern int unw_get_proc_info_by_ip (unw_addr_space_t, unw_word_t,
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unw_proc_info_t *, void *);
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extern int unw_get_reg (unw_cursor_t *, int, unw_word_t *);
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extern int unw_set_reg (unw_cursor_t *, int, unw_word_t);
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extern int unw_get_fpreg (unw_cursor_t *, int, unw_fpreg_t *);
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extern int unw_set_fpreg (unw_cursor_t *, int, unw_fpreg_t);
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extern int unw_get_save_loc (unw_cursor_t *, int, unw_save_loc_t *);
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extern int unw_is_signal_frame (unw_cursor_t *);
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extern int unw_get_proc_name (unw_cursor_t *, char *, size_t, unw_word_t *);
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#define unw_local_addr_space UNW_OBJ(local_addr_space)
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/* Create a new address space (in addition to the default
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local_addr_space). BYTE_ORDER can be 0 to select the default
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byte-order or one of the byte-order values defined by <endian.h>
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(e.g., __LITTLE_ENDIAN or __BIG_ENDIAN). The default byte-order is
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either implied by the target architecture (e.g., x86 is always
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little-endian) or is select based on the byte-order of the host.
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This routine is NOT signal-safe. */
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#define unw_create_addr_space(a,b) UNW_OBJ(create_addr_space)(a,b)
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/* Destroy an address space.
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This routine is NOT signal-safe. */
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#define unw_destroy_addr_space(as) UNW_OBJ(destroy_addr_space)(as)
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/* Retrieve a pointer to the accessors structure associated with
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address space AS.
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This routine is signal-safe. */
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#define unw_get_accessors(as) UNW_ARCH_OBJ(get_accessors)(as)
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/* Initialize cursor C such that unwinding starts at the point
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represented by the context U. Returns zero on success, negative
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value on failure.
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This routine is signal-safe. */
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#define unw_init_local(c,u) UNW_OBJ(init_local)(c, u)
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/* Initialize cursor C such that it accesses the unwind target through
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accessors A.
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This routine is signal-safe. */
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#define unw_init_remote(c,a,arg) UNW_OBJ(init_remote)(c, a, arg)
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/* Move cursor up by one step (up meaning toward earlier, less deeply
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nested frames). Returns positive number if there are more frames
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to unwind, 0 if last frame has been reached, negative number in
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case of an error.
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This routine is signal-safe. */
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#define unw_step(c) UNW_OBJ(step)(c)
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/* Resume execution at the point identified by the cursor.
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This routine is signal-safe. */
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#define unw_resume(c) UNW_OBJ(resume)(c)
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/* Return the proc-info associated with the cursor.
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This routine is signal-safe. */
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#define unw_get_proc_info(c,p) UNW_OBJ(get_proc_info)(c,p)
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/* Return the proc-info associated instruction pointer IP or an
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error-code if no such info can be found. Argument AS is the
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address-space in which the instruction-pointer IP should be looked
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up and PI is a pointer to the unw_proc_info_t structure that should
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be used to return the info. ARG is an address-space-specific
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argument and serves the same purpose as argument ARG for
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unw_init_remote(). When AS is unw_local_addr_space, 0 must be
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passed for this argument.
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This routine is signal-safe. */
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#define unw_get_proc_info_by_ip(as,ip,pi,arg) \
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UNW_OBJ(get_proc_info_by_ip)(as,ip,pi,arg)
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/* Register accessor routines. Return zero on success, negative value
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on failure.
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These routines are signal-safe. */
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#define unw_get_reg(c,r,v) UNW_OBJ(get_reg)(c,r,v)
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#define unw_set_reg(c,r,v) UNW_OBJ(set_reg)(c,r,v)
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/* Floating-point accessor routines. Return zero on success, negative
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value on failure.
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These routines are signal-safe. */
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#define unw_get_fpreg(c,r,v) UNW_OBJ(get_fpreg)(c,r,v)
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#define unw_set_fpreg(c,r,v) UNW_OBJ(set_fpreg)(c,r,v)
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/* Get the save-location of register R.
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This routine is signal-safe. */
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#define unw_get_save_loc(c,r,l) UNW_OBJ(get_save_loc)(c,r,l)
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/* Return 1 if register number R is a floating-point register, zero
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otherwise.
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This routine is signal-safe. */
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#define unw_is_fpreg(r) unw_tdep_is_fpreg(r)
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/* Returns non-zero value if the cursor points to a signal frame.
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This routine is signal-safe. */
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#define unw_is_signal_frame(c) UNW_OBJ(is_signal_frame)(c)
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/* Return the name of the procedure that created the frame identified
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by the cursor. The returned string is ASCII NUL terminated. If the
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string buffer is too small to store the entire name, the first
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portion of the string that can fit is stored in the buffer (along
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with a terminating NUL character) and -UNW_ENOMEM is returned. If
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no name can be determined, -UNW_ENOINFO is returned.
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This routine is NOT signal-safe. */
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#define unw_get_proc_name(c,s,l,o) UNW_OBJ(get_proc_name)(c, s, l, o)
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/* Returns the canonical register name of register R. R must be in
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the range from 0 to UNW_REG_LAST. Like all other unwind routines,
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this one is re-entrant (i.e., the returned string must be a string
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constant.
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This routine is signal-safe. */
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#define unw_regname(r) UNW_ARCH_OBJ(regname)(r)
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/* Sets the caching policy of address space AS. Caching can be
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disabled completely by setting the policy to UNW_CACHE_NONE. With
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UNW_CACHE_GLOBAL, there is a single cache that is shared across all
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threads. With UNW_CACHE_PER_THREAD, each thread gets its own
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cache, which can improve performance thanks to less locking and
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better locality. By default, UNW_CACHE_GLOBAL is in effect.
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This routine is NOT signal-safe. */
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#define unw_set_caching_policy(as, p) UNW_ARCH_OBJ(set_caching_policy)(as, p)
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/* Flush all caches (global, per-thread, or any other caches that
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might exist) in address-space AS of information at least relating
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to the address-range LO to HI (non-inclusive). LO and HI are only
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a performance hint and the function is allowed to over-flush (i.e.,
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flush more than the requested address-range). Furthermore, if LO
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and HI are both 0, the entire address-range is flushed. This
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function must be called if any of unwind information might have
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changed (e.g., because a library might have been removed via a call
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to dlclose()).
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This routine is signal-safe. */
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#define unw_flush_cache(as,lo,hi) UNW_ARCH_OBJ(flush_cache)(as, lo, hi)
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/* Helper routines which make it easy to use libunwind via ptrace().
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They're available only if UNW_REMOTE is _not_ defined and they
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aren't really part of the libunwind API. They are simple enough
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not to warrant creating a separate library for them. */
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extern void *_UPT_create (pid_t);
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extern void _UPT_destroy (void *upt);
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extern int _UPT_find_proc_info (unw_addr_space_t as, unw_word_t ip,
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unw_proc_info_t *pi, int need_unwind_info,
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void *arg);
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extern void _UPT_put_unwind_info (unw_addr_space_t as, unw_proc_info_t *pi,
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void *arg);
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extern int _UPT_get_dyn_info_list_addr (unw_addr_space_t as,
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unw_word_t *dil_addr, void *arg);
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extern int _UPT_access_mem (unw_addr_space_t as, unw_word_t addr,
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unw_word_t *val, int write, void *arg);
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extern int _UPT_access_reg (unw_addr_space_t as, unw_regnum_t reg,
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unw_word_t *val, int write, void *arg);
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extern int _UPT_access_fpreg (unw_addr_space_t as, unw_regnum_t reg,
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unw_fpreg_t *val, int write, void *arg);
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extern int _UPT_get_proc_name (unw_addr_space_t as, unw_word_t addr,
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char *buf, size_t len, unw_word_t *offp,
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void *arg);
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extern int _UPT_resume (unw_addr_space_t as, unw_cursor_t *c, void *arg);
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extern unw_accessors_t _UPT_accessors;
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extern unw_addr_space_t unw_local_addr_space;
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