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| author | Joel Brobecker <brobecker@gnat.com> | 2011-06-27 16:35:59 +0000 |
|---|---|---|
| committer | Joel Brobecker <brobecker@gnat.com> | 2011-06-27 16:35:59 +0000 |
| commit | ec55b84eeaaa0e16fb752dd7b2934c1de38ddff5 (patch) | |
| tree | c55905ff802d3a1009f72046cfacc5373ea2a3f0 /gdb/sparc64-tdep.c | |
| parent | 225c042e8c58864a404eb3439c5d230614dc6f83 (diff) | |
| download | gdb-ec55b84eeaaa0e16fb752dd7b2934c1de38ddff5.tar.gz | |
Add support for single register window model on SPARC
2011-06-27 Eric Botcazou <ebotcazou@adacore.com>
* sparc-tdep.h (struct sparc_frame_cache): Add frame_offset,
saved_regs_mask and copied_regs_mask fields.
(sparc_record_save_insn): New prototype.
* sparc-tdep.c (sparc_alloc_frame_cache): Initialize the new fields.
(sparc_record_save_insn): New function.
(sparc_analyze_prologue): Add head comment. Recognize store insns
of call-saved registers. Use OFFSET consistently. Recognize flat
frames and cache their settings.
(sparc32_skip_prologue): Handle flat frames.
(sparc_frame_cache): Add frame_offset to the base address.
(sparc32_frame_cache): Adjust to new frame description.
(sparc32_frame_prev_register): Likewise.
* sparc64-tdep.c (sparc64_frame_prev_register): Likewise.
* sparc-sol2-tdep.c (sparc32_sol2_sigtramp_frame_cache): Likewise.
* sparc64-sol2-tdep.c (sparc64_sol2_sigtramp_frame_cache): Likewise.
* sparcnbsd-tdep.c (sparc32nbsd_sigcontext_frame_cache): Force the
frame by calling sparc_record_save_insn.
* sparc64nbsd-tdep.c (sparc64nbsd_sigcontext_frame_cache): Likewise.
* sparcobsd-tdep.c (sparc32obsd_sigtramp_frame_cache): Likewise.
* sparc64obsd-tdep.c (sparc64obsd_frame_cache): Likewise.
Diffstat (limited to 'gdb/sparc64-tdep.c')
| -rw-r--r-- | gdb/sparc64-tdep.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c index 6efa2202a50..0430ecf22ac 100644 --- a/gdb/sparc64-tdep.c +++ b/gdb/sparc64-tdep.c @@ -520,7 +520,8 @@ sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache, { CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; - regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM; + regnum = + (cache->copied_regs_mask & 0x80) ? SPARC_I7_REGNUM : SPARC_O7_REGNUM; pc += get_frame_register_unsigned (this_frame, regnum) + 8; return frame_unwind_got_constant (this_frame, regnum, pc); } @@ -540,20 +541,20 @@ sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache, } } - /* The previous frame's `local' and `in' registers have been saved + /* The previous frame's `local' and `in' registers may have been saved in the register save area. */ - if (!cache->frameless_p - && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) + if (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM + && (cache->saved_regs_mask & (1 << (regnum - SPARC_L0_REGNUM)))) { CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; return frame_unwind_got_memory (this_frame, regnum, addr); } - /* The previous frame's `out' registers are accessable as the - current frame's `in' registers. */ - if (!cache->frameless_p - && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) + /* The previous frame's `out' registers may be accessible as the current + frame's `in' registers. */ + if (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM + && (cache->copied_regs_mask & (1 << (regnum - SPARC_O0_REGNUM)))) regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); return frame_unwind_got_register (this_frame, regnum, regnum); |