diff options
Diffstat (limited to 'gdb/xtensa-tdep.c')
| -rw-r--r-- | gdb/xtensa-tdep.c | 47 |
1 files changed, 18 insertions, 29 deletions
diff --git a/gdb/xtensa-tdep.c b/gdb/xtensa-tdep.c index 84c3d7c..1355d96 100644 --- a/gdb/xtensa-tdep.c +++ b/gdb/xtensa-tdep.c @@ -211,15 +211,6 @@ xtensa_register_name (struct gdbarch *gdbarch, int regnum) return 0; } -static unsigned long -xtensa_read_register (int regnum) -{ - ULONGEST value; - - regcache_raw_read_unsigned (get_current_regcache (), regnum, &value); - return (unsigned long) value; -} - /* Return the type of a register. Create a new type, if necessary. */ static struct ctype_cache @@ -959,7 +950,7 @@ typedef struct xtensa_frame_cache CORE_ADDR base; /* Stack pointer of this frame. */ CORE_ADDR pc; /* PC at the entry point to the function. */ CORE_ADDR ra; /* The raw return address (without CALLINC). */ - CORE_ADDR ps; /* The PS register of the previous frame. */ + CORE_ADDR ps; /* The PS register of this frame. */ CORE_ADDR prev_sp; /* Stack Pointer of the previous frame. */ int call0; /* It's a call0 framework (else windowed). */ union @@ -1178,7 +1169,7 @@ done: static void call0_frame_cache (struct frame_info *this_frame, xtensa_frame_cache_t *cache, - CORE_ADDR pc); + CORE_ADDR pc, CORE_ADDR litbase); static struct xtensa_frame_cache * xtensa_frame_cache (struct frame_info *this_frame, void **this_cache) @@ -1186,7 +1177,6 @@ xtensa_frame_cache (struct frame_info *this_frame, void **this_cache) xtensa_frame_cache_t *cache; CORE_ADDR ra, wb, ws, pc, sp, ps; struct gdbarch *gdbarch = get_frame_arch (this_frame); - unsigned int ps_regnum = gdbarch_ps_regnum (gdbarch); unsigned int fp_regnum; char op1; int windowed; @@ -1194,14 +1184,14 @@ xtensa_frame_cache (struct frame_info *this_frame, void **this_cache) if (*this_cache) return *this_cache; - windowed = windowing_enabled (xtensa_read_register (ps_regnum)); + ps = get_frame_register_unsigned (this_frame, gdbarch_ps_regnum (gdbarch)); + windowed = windowing_enabled (ps); /* Get pristine xtensa-frame. */ cache = xtensa_alloc_frame_cache (windowed); *this_cache = cache; - pc = get_frame_register_unsigned (this_frame, - gdbarch_pc_regnum (gdbarch)); + pc = get_frame_register_unsigned (this_frame, gdbarch_pc_regnum (gdbarch)); if (windowed) { @@ -1210,7 +1200,6 @@ xtensa_frame_cache (struct frame_info *this_frame, void **this_cache) gdbarch_tdep (gdbarch)->wb_regnum); ws = get_frame_register_unsigned (this_frame, gdbarch_tdep (gdbarch)->ws_regnum); - ps = get_frame_register_unsigned (this_frame, ps_regnum); op1 = read_memory_integer (pc, 1); if (XTENSA_IS_ENTRY (gdbarch, op1)) @@ -1303,13 +1292,17 @@ xtensa_frame_cache (struct frame_info *this_frame, void **this_cache) (gdbarch, gdbarch_tdep (gdbarch)->a0_base + 1, cache->wd.wb); - cache->prev_sp = xtensa_read_register (regnum); + cache->prev_sp = get_frame_register_unsigned (this_frame, regnum); } } } else /* Call0 framework. */ { - call0_frame_cache (this_frame, cache, pc); + unsigned int litbase_regnum = gdbarch_tdep (gdbarch)->litbase_regnum; + CORE_ADDR litbase = (litbase_regnum == -1) + ? 0 : get_frame_register_unsigned (this_frame, litbase_regnum); + + call0_frame_cache (this_frame, cache, pc, litbase); fp_regnum = cache->c0.fp_regnum; } @@ -1981,9 +1974,9 @@ call0_classify_opcode (xtensa_isa isa, xtensa_opcode opc) static void call0_track_op (xtensa_c0reg_t dst[], xtensa_c0reg_t src[], xtensa_insn_kind opclass, int nods, unsigned odv[], - CORE_ADDR pc, int spreg) + CORE_ADDR pc, CORE_ADDR litbase, int spreg) { - unsigned litbase, litaddr, litval; + unsigned litaddr, litval; switch (opclass) { @@ -2033,10 +2026,6 @@ call0_track_op (xtensa_c0reg_t dst[], xtensa_c0reg_t src[], case c0opc_l32r: /* 2 operands: dst, literal offset. */ gdb_assert (nods == 2); - /* litbase = xtensa_get_litbase (pc); can be also used. */ - litbase = (gdbarch_tdep (current_gdbarch)->litbase_regnum == -1) - ? 0 : xtensa_read_register - (gdbarch_tdep (current_gdbarch)->litbase_regnum); litaddr = litbase & 1 ? (litbase & ~1) + (signed)odv[1] : (pc + 3 + (signed)odv[1]) & ~3; @@ -2093,7 +2082,7 @@ call0_track_op (xtensa_c0reg_t dst[], xtensa_c0reg_t src[], because they begin with default assumptions that analysis may change. */ static CORE_ADDR -call0_analyze_prologue (CORE_ADDR start, CORE_ADDR pc, +call0_analyze_prologue (CORE_ADDR start, CORE_ADDR pc, CORE_ADDR litbase, int nregs, xtensa_c0reg_t rt[], int *call0) { CORE_ADDR ia; /* Current insn address in prologue. */ @@ -2285,7 +2274,7 @@ call0_analyze_prologue (CORE_ADDR start, CORE_ADDR pc, } /* Track register movement and modification for this operation. */ - call0_track_op (rt, rtmp, opclass, nods, odv, ia, 1); + call0_track_op (rt, rtmp, opclass, nods, odv, ia, litbase, 1); } } done: @@ -2300,7 +2289,7 @@ done: static void call0_frame_cache (struct frame_info *this_frame, - xtensa_frame_cache_t *cache, CORE_ADDR pc) + xtensa_frame_cache_t *cache, CORE_ADDR pc, CORE_ADDR litbase) { struct gdbarch *gdbarch = get_frame_arch (this_frame); CORE_ADDR start_pc; /* The beginning of the function. */ @@ -2313,7 +2302,7 @@ call0_frame_cache (struct frame_info *this_frame, if (find_pc_partial_function (pc, NULL, &start_pc, NULL)) { - body_pc = call0_analyze_prologue (start_pc, pc, C0_NREGS, + body_pc = call0_analyze_prologue (start_pc, pc, litbase, C0_NREGS, &cache->c0.c0_rt[0], &cache->call0); } @@ -2487,7 +2476,7 @@ xtensa_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc) } /* No debug line info. Analyze prologue for Call0 or simply skip ENTRY. */ - body_pc = call0_analyze_prologue(start_pc, 0, 0, NULL, NULL); + body_pc = call0_analyze_prologue(start_pc, 0, 0, 0, NULL, NULL); return body_pc != 0 ? body_pc : start_pc; } |