diff options
Diffstat (limited to 'gdb/bfin-tdep.c')
| -rw-r--r-- | gdb/bfin-tdep.c | 274 |
1 files changed, 110 insertions, 164 deletions
diff --git a/gdb/bfin-tdep.c b/gdb/bfin-tdep.c index 4d84407..f98739f 100644 --- a/gdb/bfin-tdep.c +++ b/gdb/bfin-tdep.c @@ -41,106 +41,103 @@ #include "bfin-tdep.h" /* Macros used by prologue functions. */ -#define P_LINKAGE 0xE800 -#define P_MINUS_SP1 0x0140 -#define P_MINUS_SP2 0x05C0 -#define P_MINUS_SP3 0x0540 -#define P_MINUS_SP4 0x04C0 -#define P_SP_PLUS 0x6C06 -#define P_P2_LOW 0xE10A -#define P_P2_HIGH 0XE14A -#define P_SP_EQ_SP_PLUS_P2 0X5BB2 -#define P_SP_EQ_P2_PLUS_SP 0x5B96 -#define P_MINUS_MINUS_SP_EQ_RETS 0x0167 +#define P_LINKAGE 0xE800 +#define P_MINUS_SP1 0x0140 +#define P_MINUS_SP2 0x05C0 +#define P_MINUS_SP3 0x0540 +#define P_MINUS_SP4 0x04C0 +#define P_SP_PLUS 0x6C06 +#define P_P2_LOW 0xE10A +#define P_P2_HIGH 0XE14A +#define P_SP_EQ_SP_PLUS_P2 0X5BB2 +#define P_SP_EQ_P2_PLUS_SP 0x5B96 +#define P_MINUS_MINUS_SP_EQ_RETS 0x0167 /* Macros used for program flow control. */ /* 16 bit instruction, max */ -#define P_16_BIT_INSR_MAX 0xBFFF +#define P_16_BIT_INSR_MAX 0xBFFF /* 32 bit instruction, min */ -#define P_32_BIT_INSR_MIN 0xC000 +#define P_32_BIT_INSR_MIN 0xC000 /* 32 bit instruction, max */ -#define P_32_BIT_INSR_MAX 0xE801 +#define P_32_BIT_INSR_MAX 0xE801 /* jump (preg), 16-bit, min */ -#define P_JUMP_PREG_MIN 0x0050 +#define P_JUMP_PREG_MIN 0x0050 /* jump (preg), 16-bit, max */ -#define P_JUMP_PREG_MAX 0x0057 +#define P_JUMP_PREG_MAX 0x0057 /* jump (pc+preg), 16-bit, min */ -#define P_JUMP_PC_PLUS_PREG_MIN 0x0080 +#define P_JUMP_PC_PLUS_PREG_MIN 0x0080 /* jump (pc+preg), 16-bit, max */ -#define P_JUMP_PC_PLUS_PREG_MAX 0x0087 +#define P_JUMP_PC_PLUS_PREG_MAX 0x0087 /* jump.s pcrel13m2, 16-bit, min */ -#define P_JUMP_S_MIN 0x2000 +#define P_JUMP_S_MIN 0x2000 /* jump.s pcrel13m2, 16-bit, max */ -#define P_JUMP_S_MAX 0x2FFF +#define P_JUMP_S_MAX 0x2FFF /* jump.l pcrel25m2, 32-bit, min */ -#define P_JUMP_L_MIN 0xE200 +#define P_JUMP_L_MIN 0xE200 /* jump.l pcrel25m2, 32-bit, max */ -#define P_JUMP_L_MAX 0xE2FF +#define P_JUMP_L_MAX 0xE2FF /* conditional jump pcrel11m2, 16-bit, min */ -#define P_IF_CC_JUMP_MIN 0x1800 +#define P_IF_CC_JUMP_MIN 0x1800 /* conditional jump pcrel11m2, 16-bit, max */ -#define P_IF_CC_JUMP_MAX 0x1BFF +#define P_IF_CC_JUMP_MAX 0x1BFF /* conditional jump(bp) pcrel11m2, 16-bit, min */ -#define P_IF_CC_JUMP_BP_MIN 0x1C00 +#define P_IF_CC_JUMP_BP_MIN 0x1C00 /* conditional jump(bp) pcrel11m2, 16-bit, max */ -#define P_IF_CC_JUMP_BP_MAX 0x1FFF +#define P_IF_CC_JUMP_BP_MAX 0x1FFF /* conditional !jump pcrel11m2, 16-bit, min */ -#define P_IF_NOT_CC_JUMP_MIN 0x1000 +#define P_IF_NOT_CC_JUMP_MIN 0x1000 /* conditional !jump pcrel11m2, 16-bit, max */ -#define P_IF_NOT_CC_JUMP_MAX 0x13FF +#define P_IF_NOT_CC_JUMP_MAX 0x13FF /* conditional jump(bp) pcrel11m2, 16-bit, min */ -#define P_IF_NOT_CC_JUMP_BP_MIN 0x1400 +#define P_IF_NOT_CC_JUMP_BP_MIN 0x1400 /* conditional jump(bp) pcrel11m2, 16-bit, max */ -#define P_IF_NOT_CC_JUMP_BP_MAX 0x17FF +#define P_IF_NOT_CC_JUMP_BP_MAX 0x17FF /* call (preg), 16-bit, min */ -#define P_CALL_PREG_MIN 0x0060 +#define P_CALL_PREG_MIN 0x0060 /* call (preg), 16-bit, max */ -#define P_CALL_PREG_MAX 0x0067 +#define P_CALL_PREG_MAX 0x0067 /* call (pc+preg), 16-bit, min */ -#define P_CALL_PC_PLUS_PREG_MIN 0x0070 +#define P_CALL_PC_PLUS_PREG_MIN 0x0070 /* call (pc+preg), 16-bit, max */ -#define P_CALL_PC_PLUS_PREG_MAX 0x0077 +#define P_CALL_PC_PLUS_PREG_MAX 0x0077 /* call pcrel25m2, 32-bit, min */ -#define P_CALL_MIN 0xE300 +#define P_CALL_MIN 0xE300 /* call pcrel25m2, 32-bit, max */ -#define P_CALL_MAX 0xE3FF +#define P_CALL_MAX 0xE3FF /* RTS */ -#define P_RTS 0x0010 +#define P_RTS 0x0010 /* MNOP */ -#define P_MNOP 0xC803 +#define P_MNOP 0xC803 /* EXCPT, 16-bit, min */ -#define P_EXCPT_MIN 0x00A0 +#define P_EXCPT_MIN 0x00A0 /* EXCPT, 16-bit, max */ -#define P_EXCPT_MAX 0x00AF +#define P_EXCPT_MAX 0x00AF /* multi instruction mask 1, 16-bit */ -#define P_BIT_MULTI_INS_1 0xC000 +#define P_BIT_MULTI_INS_1 0xC000 /* multi instruction mask 2, 16-bit */ -#define P_BIT_MULTI_INS_2 0x0800 +#define P_BIT_MULTI_INS_2 0x0800 /* The maximum bytes we search to skip the prologue. */ -#define UPPER_LIMIT 40 +#define UPPER_LIMIT 40 /* ASTAT bits */ -#define ASTAT_CC_POS 5 -#define ASTAT_CC (1 << ASTAT_CC_POS) +#define ASTAT_CC_POS 5 +#define ASTAT_CC (1 << ASTAT_CC_POS) /* Initial value: Register names used in BFIN's ISA documentation. */ -static const char * const bfin_register_name_strings[] = -{ - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "p0", "p1", "p2", "p3", "p4", "p5", "sp", "fp", - "i0", "i1", "i2", "i3", "m0", "m1", "m2", "m3", - "b0", "b1", "b2", "b3", "l0", "l1", "l2", "l3", - "a0x", "a0w", "a1x", "a1w", "astat", "rets", - "lc0", "lt0", "lb0", "lc1", "lt1", "lb1", "cycles", "cycles2", - "usp", "seqstat", "syscfg", "reti", "retx", "retn", "rete", - "pc", "cc", +static const char *const bfin_register_name_strings[] = { + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "p0", "p1", "p2", "p3", "p4", "p5", "sp", "fp", + "i0", "i1", "i2", "i3", "m0", "m1", "m2", "m3", + "b0", "b1", "b2", "b3", "l0", "l1", "l2", "l3", + "a0x", "a0w", "a1x", "a1w", "astat", "rets", "lc0", "lt0", + "lb0", "lc1", "lt1", "lb1", "cycles", "cycles2", "usp", "seqstat", + "syscfg", "reti", "retx", "retn", "rete", "pc", "cc", }; #define NUM_BFIN_REGNAMES ARRAY_SIZE (bfin_register_name_strings) - /* In this diagram successive memory locations increase downwards or the stack grows upwards with negative indices. (PUSH analogy for stack.) @@ -185,64 +182,29 @@ static const char * const bfin_register_name_strings[] = FP has the topmost frame. FP + 4 has the previous FP and so on. */ - /* Map from DWARF2 register number to GDB register number. */ -static const int map_gcc_gdb[] = -{ - BFIN_R0_REGNUM, - BFIN_R1_REGNUM, - BFIN_R2_REGNUM, - BFIN_R3_REGNUM, - BFIN_R4_REGNUM, - BFIN_R5_REGNUM, - BFIN_R6_REGNUM, - BFIN_R7_REGNUM, - BFIN_P0_REGNUM, - BFIN_P1_REGNUM, - BFIN_P2_REGNUM, - BFIN_P3_REGNUM, - BFIN_P4_REGNUM, - BFIN_P5_REGNUM, - BFIN_SP_REGNUM, - BFIN_FP_REGNUM, - BFIN_I0_REGNUM, - BFIN_I1_REGNUM, - BFIN_I2_REGNUM, - BFIN_I3_REGNUM, - BFIN_B0_REGNUM, - BFIN_B1_REGNUM, - BFIN_B2_REGNUM, - BFIN_B3_REGNUM, - BFIN_L0_REGNUM, - BFIN_L1_REGNUM, - BFIN_L2_REGNUM, - BFIN_L3_REGNUM, - BFIN_M0_REGNUM, - BFIN_M1_REGNUM, - BFIN_M2_REGNUM, - BFIN_M3_REGNUM, - BFIN_A0_DOT_X_REGNUM, - BFIN_A1_DOT_X_REGNUM, - BFIN_CC_REGNUM, - BFIN_RETS_REGNUM, - BFIN_RETI_REGNUM, - BFIN_RETX_REGNUM, - BFIN_RETN_REGNUM, - BFIN_RETE_REGNUM, - BFIN_ASTAT_REGNUM, - BFIN_SEQSTAT_REGNUM, - BFIN_USP_REGNUM, - BFIN_LT0_REGNUM, - BFIN_LT1_REGNUM, - BFIN_LC0_REGNUM, - BFIN_LC1_REGNUM, - BFIN_LB0_REGNUM, - BFIN_LB1_REGNUM -}; +static const int map_gcc_gdb[] + = { BFIN_R0_REGNUM, BFIN_R1_REGNUM, BFIN_R2_REGNUM, + BFIN_R3_REGNUM, BFIN_R4_REGNUM, BFIN_R5_REGNUM, + BFIN_R6_REGNUM, BFIN_R7_REGNUM, BFIN_P0_REGNUM, + BFIN_P1_REGNUM, BFIN_P2_REGNUM, BFIN_P3_REGNUM, + BFIN_P4_REGNUM, BFIN_P5_REGNUM, BFIN_SP_REGNUM, + BFIN_FP_REGNUM, BFIN_I0_REGNUM, BFIN_I1_REGNUM, + BFIN_I2_REGNUM, BFIN_I3_REGNUM, BFIN_B0_REGNUM, + BFIN_B1_REGNUM, BFIN_B2_REGNUM, BFIN_B3_REGNUM, + BFIN_L0_REGNUM, BFIN_L1_REGNUM, BFIN_L2_REGNUM, + BFIN_L3_REGNUM, BFIN_M0_REGNUM, BFIN_M1_REGNUM, + BFIN_M2_REGNUM, BFIN_M3_REGNUM, BFIN_A0_DOT_X_REGNUM, + BFIN_A1_DOT_X_REGNUM, BFIN_CC_REGNUM, BFIN_RETS_REGNUM, + BFIN_RETI_REGNUM, BFIN_RETX_REGNUM, BFIN_RETN_REGNUM, + BFIN_RETE_REGNUM, BFIN_ASTAT_REGNUM, BFIN_SEQSTAT_REGNUM, + BFIN_USP_REGNUM, BFIN_LT0_REGNUM, BFIN_LT1_REGNUM, + BFIN_LC0_REGNUM, BFIN_LC1_REGNUM, BFIN_LB0_REGNUM, + BFIN_LB1_REGNUM }; /* Big enough to hold the size of the largest register in bytes. */ -#define BFIN_MAX_REGISTER_SIZE 4 +#define BFIN_MAX_REGISTER_SIZE 4 struct bfin_frame_cache { @@ -313,15 +275,15 @@ bfin_frame_cache (frame_info_ptr this_frame, void **this_cache) if (cache->saved_regs[i] != -1) cache->saved_regs[i] += cache->base; - cache->pc = get_frame_func (this_frame) ; + cache->pc = get_frame_func (this_frame); if (cache->pc == 0 || cache->pc == get_frame_pc (this_frame)) { /* Either there is no prologue (frameless function) or we are at the start of a function. In short we do not have a frame. PC is stored in rets register. FP points to previous frame. */ - cache->saved_regs[BFIN_PC_REGNUM] = - get_frame_register_unsigned (this_frame, BFIN_RETS_REGNUM); + cache->saved_regs[BFIN_PC_REGNUM] + = get_frame_register_unsigned (this_frame, BFIN_RETS_REGNUM); cache->frameless_pc_value = 1; cache->base = get_frame_register_unsigned (this_frame, BFIN_FP_REGNUM); cache->saved_regs[BFIN_FP_REGNUM] = cache->base; @@ -340,8 +302,7 @@ bfin_frame_cache (frame_info_ptr this_frame, void **this_cache) } static void -bfin_frame_this_id (frame_info_ptr this_frame, - void **this_cache, +bfin_frame_this_id (frame_info_ptr this_frame, void **this_cache, struct frame_id *this_id) { struct bfin_frame_cache *cache = bfin_frame_cache (this_frame, this_cache); @@ -355,8 +316,7 @@ bfin_frame_this_id (frame_info_ptr this_frame, } static struct value * -bfin_frame_prev_register (frame_info_ptr this_frame, - void **this_cache, +bfin_frame_prev_register (frame_info_ptr this_frame, void **this_cache, int regnum) { struct gdbarch *gdbarch = get_frame_arch (this_frame); @@ -372,16 +332,14 @@ bfin_frame_prev_register (frame_info_ptr this_frame, return frame_unwind_got_register (this_frame, regnum, regnum); } -static const struct frame_unwind bfin_frame_unwind = -{ - "bfin prologue", - NORMAL_FRAME, - default_frame_unwind_stop_reason, - bfin_frame_this_id, - bfin_frame_prev_register, - NULL, - default_frame_sniffer -}; +static const struct frame_unwind bfin_frame_unwind + = { "bfin prologue", + NORMAL_FRAME, + default_frame_unwind_stop_reason, + bfin_frame_this_id, + bfin_frame_prev_register, + NULL, + default_frame_sniffer }; /* Check for "[--SP] = <reg>;" insns. These are appear in function prologues to save misc registers onto the stack. */ @@ -391,8 +349,8 @@ is_minus_minus_sp (int op) { op &= 0xFFC0; - if ((op == P_MINUS_SP1) || (op == P_MINUS_SP2) - || (op == P_MINUS_SP3) || (op == P_MINUS_SP4)) + if ((op == P_MINUS_SP1) || (op == P_MINUS_SP2) || (op == P_MINUS_SP3) + || (op == P_MINUS_SP4)) return 1; return 0; @@ -451,8 +409,8 @@ bfin_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) } else if (pc - orig_pc >= UPPER_LIMIT) { - warning (_("Function Prologue not recognised; " - "pc will point to ENTRY_POINT of the function")); + warning (_ ("Function Prologue not recognised; " + "pc will point to ENTRY_POINT of the function")); pc = orig_pc + 2; done = 1; } @@ -463,7 +421,7 @@ bfin_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) } } - /* TODO: + /* TODO: Dwarf2 uses entry point value AFTER some register initializations. We should perhaps skip such asssignments as well (R6 = R1, ...). */ @@ -492,13 +450,9 @@ bfin_register_type (struct gdbarch *gdbarch, int regnum) } static CORE_ADDR -bfin_push_dummy_call (struct gdbarch *gdbarch, - struct value *function, - struct regcache *regcache, - CORE_ADDR bp_addr, - int nargs, - struct value **args, - CORE_ADDR sp, +bfin_push_dummy_call (struct gdbarch *gdbarch, struct value *function, + struct regcache *regcache, CORE_ADDR bp_addr, int nargs, + struct value **args, CORE_ADDR sp, function_call_return_method return_method, CORE_ADDR struct_addr) { @@ -593,8 +547,8 @@ bfin_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) static const gdb_byte * bfin_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size) { - static unsigned char bfin_breakpoint[] = {0xa1, 0x00, 0x00, 0x00}; - static unsigned char bfin_sim_breakpoint[] = {0x25, 0x00, 0x00, 0x00}; + static unsigned char bfin_breakpoint[] = { 0xa1, 0x00, 0x00, 0x00 }; + static unsigned char bfin_sim_breakpoint[] = { 0x25, 0x00, 0x00, 0x00 }; *size = kind; @@ -605,8 +559,7 @@ bfin_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size) } static void -bfin_extract_return_value (struct type *type, - struct regcache *regs, +bfin_extract_return_value (struct type *type, struct regcache *regs, gdb_byte *dst) { struct gdbarch *gdbarch = regs->arch (); @@ -631,8 +584,7 @@ bfin_extract_return_value (struct type *type, TYPE, given in virtual format. */ static void -bfin_store_return_value (struct type *type, - struct regcache *regs, +bfin_store_return_value (struct type *type, struct regcache *regs, const gdb_byte *src) { const bfd_byte *valbuf = src; @@ -661,12 +613,9 @@ bfin_store_return_value (struct type *type, from WRITEBUF into REGCACHE. */ static enum return_value_convention -bfin_return_value (struct gdbarch *gdbarch, - struct value *function, - struct type *type, - struct regcache *regcache, - gdb_byte *readbuf, - const gdb_byte *writebuf) +bfin_return_value (struct gdbarch *gdbarch, struct value *function, + struct type *type, struct regcache *regcache, + gdb_byte *readbuf, const gdb_byte *writebuf) { if (type->length () > 8) return RETURN_VALUE_STRUCT_CONVENTION; @@ -689,14 +638,15 @@ bfin_register_name (struct gdbarch *gdbarch, int i) } static enum register_status -bfin_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, - int regnum, gdb_byte *buffer) +bfin_pseudo_register_read (struct gdbarch *gdbarch, + readable_regcache *regcache, int regnum, + gdb_byte *buffer) { gdb_byte buf[BFIN_MAX_REGISTER_SIZE]; enum register_status status; if (regnum != BFIN_CC_REGNUM) - internal_error (_("invalid register number %d"), regnum); + internal_error (_ ("invalid register number %d"), regnum); /* Extract the CC bit from the ASTAT register. */ status = regcache->raw_read (BFIN_ASTAT_REGNUM, buf); @@ -715,7 +665,7 @@ bfin_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, gdb_byte buf[BFIN_MAX_REGISTER_SIZE]; if (regnum != BFIN_CC_REGNUM) - internal_error (_("invalid register number %d"), regnum); + internal_error (_ ("invalid register number %d"), regnum); /* Overlay the CC bit in the ASTAT register. */ regcache->raw_read (BFIN_ASTAT_REGNUM, buf); @@ -747,13 +697,9 @@ bfin_frame_args_address (frame_info_ptr this_frame, void **this_cache) return cache->base + 8; } -static const struct frame_base bfin_frame_base = -{ - &bfin_frame_unwind, - bfin_frame_base_address, - bfin_frame_local_address, - bfin_frame_args_address -}; +static const struct frame_base bfin_frame_base + = { &bfin_frame_unwind, bfin_frame_base_address, bfin_frame_local_address, + bfin_frame_args_address }; static CORE_ADDR bfin_frame_align (struct gdbarch *gdbarch, CORE_ADDR address) @@ -784,8 +730,7 @@ bfin_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* If there is already a candidate, use it. */ - for (arches = gdbarch_list_lookup_by_info (arches, &info); - arches != NULL; + for (arches = gdbarch_list_lookup_by_info (arches, &info); arches != NULL; arches = gdbarch_list_lookup_by_info (arches->next, &info)) { bfin_gdbarch_tdep *tdep @@ -837,6 +782,7 @@ bfin_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) } void _initialize_bfin_tdep (); + void _initialize_bfin_tdep () { |