diff options
Diffstat (limited to 'gdb/dwarf2/frame.h')
| -rw-r--r-- | gdb/dwarf2/frame.h | 75 |
1 files changed, 41 insertions, 34 deletions
diff --git a/gdb/dwarf2/frame.h b/gdb/dwarf2/frame.h index 5643e55..3dfa936 100644 --- a/gdb/dwarf2/frame.h +++ b/gdb/dwarf2/frame.h @@ -57,11 +57,11 @@ enum dwarf2_frame_reg_rule /* These aren't defined by the DWARF2 CFI specification, but are used internally by GDB. */ - DWARF2_FRAME_REG_FN, /* Call a registered function. */ - DWARF2_FRAME_REG_RA, /* Return Address. */ - DWARF2_FRAME_REG_RA_OFFSET, /* Return Address with offset. */ - DWARF2_FRAME_REG_CFA, /* Call Frame Address. */ - DWARF2_FRAME_REG_CFA_OFFSET /* Call Frame Address with offset. */ + DWARF2_FRAME_REG_FN, /* Call a registered function. */ + DWARF2_FRAME_REG_RA, /* Return Address. */ + DWARF2_FRAME_REG_RA_OFFSET, /* Return Address with offset. */ + DWARF2_FRAME_REG_CFA, /* Call Frame Address. */ + DWARF2_FRAME_REG_CFA_OFFSET /* Call Frame Address with offset. */ }; /* Register state. */ @@ -73,14 +73,17 @@ struct dwarf2_frame_state_reg { /* Each register save state can be described in terms of a CFA slot, another register, or a location expression. */ - union { + union + { LONGEST offset; ULONGEST reg; + struct { const gdb_byte *start; ULONGEST len; } exp; + fn_prev_register fn; } loc; enum dwarf2_frame_reg_rule how; @@ -96,22 +99,22 @@ enum cfa_how_kind struct dwarf2_frame_state_reg_info { dwarf2_frame_state_reg_info () = default; - ~dwarf2_frame_state_reg_info () - { - delete prev; - } + + ~dwarf2_frame_state_reg_info () { delete prev; } /* Copy constructor. */ dwarf2_frame_state_reg_info (const dwarf2_frame_state_reg_info &src) - : reg (src.reg), cfa_offset (src.cfa_offset), - cfa_reg (src.cfa_reg), cfa_how (src.cfa_how), cfa_exp (src.cfa_exp), + : reg (src.reg), + cfa_offset (src.cfa_offset), + cfa_reg (src.cfa_reg), + cfa_how (src.cfa_how), + cfa_exp (src.cfa_exp), prev (src.prev) { } /* Assignment operator for both move-assignment and copy-assignment. */ - dwarf2_frame_state_reg_info& - operator= (dwarf2_frame_state_reg_info rhs) + dwarf2_frame_state_reg_info &operator= (dwarf2_frame_state_reg_info rhs) { swap (*this, rhs); return *this; @@ -119,8 +122,11 @@ struct dwarf2_frame_state_reg_info /* Move constructor. */ dwarf2_frame_state_reg_info (dwarf2_frame_state_reg_info &&rhs) noexcept - : reg (std::move (rhs.reg)), cfa_offset (rhs.cfa_offset), - cfa_reg (rhs.cfa_reg), cfa_how (rhs.cfa_how), cfa_exp (rhs.cfa_exp), + : reg (std::move (rhs.reg)), + cfa_offset (rhs.cfa_offset), + cfa_reg (rhs.cfa_reg), + cfa_how (rhs.cfa_how), + cfa_exp (rhs.cfa_exp), prev (rhs.prev) { rhs.prev = nullptr; @@ -149,8 +155,9 @@ struct dwarf2_frame_state_reg_info struct dwarf2_frame_state_reg_info *prev = NULL; private: - friend void swap (dwarf2_frame_state_reg_info& lhs, - dwarf2_frame_state_reg_info& rhs) + + friend void swap (dwarf2_frame_state_reg_info &lhs, + dwarf2_frame_state_reg_info &rhs) { using std::swap; @@ -173,14 +180,18 @@ struct dwarf2_frame_state /* Each register save state can be described in terms of a CFA slot, another register, or a location expression. */ - struct dwarf2_frame_state_reg_info regs {}; + struct dwarf2_frame_state_reg_info regs + { + }; /* The PC described by the current frame state. */ CORE_ADDR pc; /* Initial register set from the CIE. Used to implement DW_CFA_restore. */ - struct dwarf2_frame_state_reg_info initial {}; + struct dwarf2_frame_state_reg_info initial + { + }; /* The information we care about from the CIE. */ const LONGEST data_align; @@ -207,26 +218,23 @@ extern bool dwarf2_frame_unwinders_enabled_p; /* Set the architecture-specific register state initialization function for GDBARCH to INIT_REG. */ -extern void dwarf2_frame_set_init_reg (struct gdbarch *gdbarch, - void (*init_reg) (struct gdbarch *, int, - struct dwarf2_frame_state_reg *, - frame_info_ptr)); +extern void dwarf2_frame_set_init_reg ( + struct gdbarch *gdbarch, + void (*init_reg) (struct gdbarch *, int, struct dwarf2_frame_state_reg *, + frame_info_ptr)); /* Set the architecture-specific signal trampoline recognition function for GDBARCH to SIGNAL_FRAME_P. */ -extern void - dwarf2_frame_set_signal_frame_p (struct gdbarch *gdbarch, - int (*signal_frame_p) (struct gdbarch *, - frame_info_ptr)); +extern void dwarf2_frame_set_signal_frame_p ( + struct gdbarch *gdbarch, + int (*signal_frame_p) (struct gdbarch *, frame_info_ptr)); /* Set the architecture-specific adjustment of .eh_frame and .debug_frame register numbers. */ -extern void - dwarf2_frame_set_adjust_regnum (struct gdbarch *gdbarch, - int (*adjust_regnum) (struct gdbarch *, - int, int)); +extern void dwarf2_frame_set_adjust_regnum ( + struct gdbarch *gdbarch, int (*adjust_regnum) (struct gdbarch *, int, int)); /* Append the DWARF-2 frame unwinders to GDBARCH's list. */ @@ -236,7 +244,7 @@ void dwarf2_append_unwinders (struct gdbarch *gdbarch); NULL if it can't be handled by the DWARF CFI frame unwinder. */ extern const struct frame_base * - dwarf2_frame_base_sniffer (frame_info_ptr this_frame); +dwarf2_frame_base_sniffer (frame_info_ptr this_frame); /* Compute the DWARF CFA for a frame. */ @@ -264,7 +272,6 @@ extern int dwarf2_fetch_cfa_info (struct gdbarch *gdbarch, CORE_ADDR pc, const gdb_byte **cfa_start_out, const gdb_byte **cfa_end_out); - /* Allocate a new instance of the function unique data. The main purpose of this custom function data object is to allow caching the |