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| author | Filip Nyback <filip.nyback@fillexen.fi> | 2014-06-27 15:11:41 +0300 |
|---|---|---|
| committer | Filip Nyback <filip.nyback@fillexen.fi> | 2014-07-30 14:25:14 +0300 |
| commit | e1804829cabb9bb1514d9537ed94f2c353a1a70d (patch) | |
| tree | 16ea07919892e7158a212348bb03dd80e91a4b2d /include/tdep-arm | |
| parent | 65ac86741606e1d87aef75755c699e4fa6884230 (diff) | |
| download | libunwind-e1804829cabb9bb1514d9537ed94f2c353a1a70d.tar.gz | |
Add fast stack trace on ARM.
Port of the fast stack trace feature to ARM.
Diffstat (limited to 'include/tdep-arm')
| -rw-r--r-- | include/tdep-arm/libunwind_i.h | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/include/tdep-arm/libunwind_i.h b/include/tdep-arm/libunwind_i.h index 291b1018..e5ec9553 100644 --- a/include/tdep-arm/libunwind_i.h +++ b/include/tdep-arm/libunwind_i.h @@ -36,9 +36,25 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "dwarf.h" #include "ex_tables.h" +typedef enum + { + UNW_ARM_FRAME_STANDARD = -2, /* regular r7, sp +/- offset */ + UNW_ARM_FRAME_SIGRETURN = -1, /* special sigreturn frame */ + UNW_ARM_FRAME_OTHER = 0, /* not cacheable (special or unrecognised) */ + UNW_ARM_FRAME_GUESSED = 1 /* guessed it was regular, but not known */ + } +unw_tdep_frame_type_t; + typedef struct { - /* no arm-specific fast trace */ + uint32_t virtual_address; + int32_t frame_type : 2; /* unw_tdep_frame_type_t classification */ + int32_t last_frame : 1; /* non-zero if last frame in chain */ + int32_t cfa_reg_sp : 1; /* cfa dwarf base register is sp vs. r7 */ + int32_t cfa_reg_offset : 30; /* cfa is at this offset from base register value */ + int32_t r7_cfa_offset : 30; /* r7 saved at this offset from cfa (-1 = not saved) */ + int32_t lr_cfa_offset : 30; /* lr saved at this offset from cfa (-1 = not saved) */ + int32_t sp_cfa_offset : 30; /* sp saved at this offset from cfa (-1 = not saved) */ } unw_tdep_frame_t; @@ -61,6 +77,9 @@ struct unw_addr_space struct cursor { struct dwarf_cursor dwarf; /* must be first */ + + unw_tdep_frame_t frame_info; /* quick tracing assist info */ + enum { ARM_SCF_NONE, /* no signal frame */ @@ -73,6 +92,7 @@ struct cursor unw_word_t sigcontext_addr; unw_word_t sigcontext_sp; unw_word_t sigcontext_pc; + int validate; }; #define DWARF_GET_LOC(l) ((l).val) @@ -242,8 +262,8 @@ dwarf_put (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t val) #define tdep_fetch_frame(c,ip,n) do {} while(0) #define tdep_cache_frame(c,rs) do {} while(0) #define tdep_reuse_frame(c,rs) do {} while(0) -#define tdep_stash_frame(c,rs) do {} while(0) -#define tdep_trace(cur,addr,n) (-UNW_ENOINFO) +#define tdep_stash_frame UNW_OBJ(tdep_stash_frame) +#define tdep_trace UNW_OBJ(tdep_trace) #ifdef UNW_LOCAL_ONLY # define tdep_find_proc_info(c,ip,n) \ @@ -283,6 +303,9 @@ extern int tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp, int write); extern int tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp, int write); +extern int tdep_trace (unw_cursor_t *cursor, void **addresses, int *n); +extern void tdep_stash_frame (struct dwarf_cursor *c, + struct dwarf_reg_state *rs); /* unwinding method selection support */ #define UNW_ARM_METHOD_ALL 0xFF |