diff options
Diffstat (limited to 'gdb/sparc-tdep.c')
| -rw-r--r-- | gdb/sparc-tdep.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c index 078907a..73152ce 100644 --- a/gdb/sparc-tdep.c +++ b/gdb/sparc-tdep.c @@ -20,6 +20,7 @@ #include "defs.h" #include "arch-utils.h" #include "dis-asm.h" +#include "dwarf2.h" #include "dwarf2-frame.h" #include "floatformat.h" #include "frame.h" @@ -1536,6 +1537,34 @@ sparc32_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, } } +/* Implement the execute_dwarf_cfa_vendor_op method. */ + +static bool +sparc_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op, + struct dwarf2_frame_state *fs) +{ + /* Only DW_CFA_GNU_window_save is expected on SPARC. */ + if (op != DW_CFA_GNU_window_save) + return false; + + uint64_t reg; + int size = register_size (gdbarch, 0); + + dwarf2_frame_state_alloc_regs (&fs->regs, 32); + for (reg = 8; reg < 16; reg++) + { + fs->regs.reg[reg].how = DWARF2_FRAME_REG_SAVED_REG; + fs->regs.reg[reg].loc.reg = reg + 16; + } + for (reg = 16; reg < 32; reg++) + { + fs->regs.reg[reg].how = DWARF2_FRAME_REG_SAVED_OFFSET; + fs->regs.reg[reg].loc.offset = (reg - 16) * size; + } + + return true; +} + /* The SPARC Architecture doesn't have hardware single-step support, and most operating systems don't implement it either, so we provide @@ -1801,6 +1830,9 @@ sparc32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Hook in the DWARF CFI frame unwinder. */ dwarf2_frame_set_init_reg (gdbarch, sparc32_dwarf2_frame_init_reg); + /* Register DWARF vendor CFI handler. */ + set_gdbarch_execute_dwarf_cfa_vendor_op (gdbarch, + sparc_execute_dwarf_cfa_vendor_op); /* FIXME: kettenis/20050423: Don't enable the unwinder until the StackGhost issues have been resolved. */ |