From: Corinna Vinschen Date: Thu, 16 May 2002 11:43:08 +0000 (+0000) Subject: * v850-tdep.c: Full multi-arch. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=435e042a62feb7d45aea323b4e52c248525e25c8;p=binutils-gdb.git * v850-tdep.c: Full multi-arch. * config/v850/tm-v850.h: Eliminate or move to v850-tdep.c everything. Define GDB_MULTI_ARCH to 2. --- diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 03e75cd2cc1..b87a00f9639 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2002-05-16 Corinna Vinschen + + * v850-tdep.c: Full multi-arch. + * config/v850/tm-v850.h: Eliminate or move to v850-tdep.c everything. + Define GDB_MULTI_ARCH to 2. + 2002-05-16 Pierre Muller * p-exp.y (current_type): New static variable. diff --git a/gdb/config/v850/tm-v850.h b/gdb/config/v850/tm-v850.h index 3d6f2d1bad0..414033addd0 100644 --- a/gdb/config/v850/tm-v850.h +++ b/gdb/config/v850/tm-v850.h @@ -20,154 +20,4 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include "regcache.h" -#include "symtab.h" /* For namespace_enum. */ -#include "symfile.h" /* For entry_point_address(). */ - -#define NUM_REGS 66 - -#define REGISTER_NAMES \ -{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ - "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ - "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ - \ - "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", \ - "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", \ - "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", \ - "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31", \ - \ - "pc", "fp" } - -/* Initializer for an array of names of registers. - Entries beyond the first NUM_REGS are ignored. */ - -extern char **v850_register_names; -#define REGISTER_NAME(i) v850_register_names[i] - - -#define REGISTER_BYTES (NUM_REGS * 4) - -#define REGISTER_SIZE 4 -#define MAX_REGISTER_RAW_SIZE 4 - -#define R0_REGNUM 0 -#define R1_REGNUM 1 -#define SAVE1_START_REGNUM 2 -#define SAVE1_END_REGNUM 2 -#define SP_REGNUM 3 -#define ARG0_REGNUM 6 -#define ARGLAST_REGNUM 9 -#define V0_REGNUM 10 -#define V1_REGNUM 11 -#define R12_REGNUM 12 -#define SAVE2_START_REGNUM 20 -#define SAVE2_END_REGNUM 29 -#define EP_REGNUM 30 -#define SAVE3_START_REGNUM 31 -#define SAVE3_END_REGNUM 31 -#define RP_REGNUM 31 -#define SR0_REGNUM 32 -#define PS_REGNUM (SR0_REGNUM+5) -#define CTBP_REGNUM (SR0_REGNUM+20) -#define PC_REGNUM 64 -#define FP_REGNUM 65 -#define FP_RAW_REGNUM 29 - -#define TARGET_READ_FP() read_register (FP_RAW_REGNUM) - -#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int - -#define REGISTER_BYTE(REG) ((REG) * 4) -#define REGISTER_VIRTUAL_SIZE(REG) 4 -#define REGISTER_RAW_SIZE(REG) 4 - -#define MAX_REGISTER_VIRTUAL_SIZE 4 - -#define BREAKPOINT {0x85, 0x05} /* little-ended */ - -#define FUNCTION_START_OFFSET 0 - -#define DECR_PC_AFTER_BREAK 0 - -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) - -#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM) - -struct frame_info; -struct frame_saved_regs; -struct type; -struct value; - -extern void v850_init_extra_frame_info (struct frame_info *fi); -#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) v850_init_extra_frame_info (fi) -#define INIT_FRAME_PC /* Not necessary */ - -extern void v850_frame_init_saved_regs (struct frame_info *fi); -#define FRAME_INIT_SAVED_REGS(FI) v850_frame_init_saved_regs (FI) - -extern CORE_ADDR v850_frame_chain (struct frame_info *fi); -#define FRAME_CHAIN(fi) v850_frame_chain (fi) -#define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid (FP, FI) - -extern CORE_ADDR v850_find_callers_reg (struct frame_info *fi, int regnum); -extern CORE_ADDR v850_frame_saved_pc (struct frame_info *); -#define FRAME_SAVED_PC(FI) (v850_frame_saved_pc (FI)) - -#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \ - memcpy (VALBUF, REGBUF + REGISTER_BYTE (V0_REGNUM), TYPE_LENGTH (TYPE)) - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ - extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \ - REGISTER_RAW_SIZE (V0_REGNUM)) - -#define STORE_RETURN_VALUE(TYPE, VALBUF) \ - write_register_bytes(REGISTER_BYTE (V0_REGNUM), VALBUF, TYPE_LENGTH (TYPE)); - -extern CORE_ADDR v850_skip_prologue (CORE_ADDR pc); -#define SKIP_PROLOGUE(pc) (v850_skip_prologue (pc)) - -#define FRAME_ARGS_SKIP 0 - -#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) -#define FRAME_NUM_ARGS(fi) (-1) - -extern void v850_pop_frame (struct frame_info *frame); -#define POP_FRAME v850_pop_frame (get_current_frame ()) - -#define USE_GENERIC_DUMMY_FRAMES 1 -#define CALL_DUMMY {0} -#define CALL_DUMMY_START_OFFSET (0) -#define CALL_DUMMY_BREAKPOINT_OFFSET (0) -#define CALL_DUMMY_LOCATION AT_ENTRY_POINT -#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP) -#define CALL_DUMMY_ADDRESS() entry_point_address () -extern CORE_ADDR v850_push_return_address (CORE_ADDR, CORE_ADDR); -#define PUSH_RETURN_ADDRESS(PC, SP) v850_push_return_address (PC, SP) - - -#define PUSH_DUMMY_FRAME generic_push_dummy_frame () - -extern CORE_ADDR -v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - unsigned char struct_return, CORE_ADDR struct_addr); -#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ - (v850_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)) - -#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) - - -#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) - -extern use_struct_convention_fn v850_use_struct_convention; -#define USE_STRUCT_CONVENTION(GCC_P, TYPE) v850_use_struct_convention (GCC_P, TYPE); - -/* override the default get_saved_register function with - one that takes account of generic CALL_DUMMY frames */ -#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ - generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) - -/* Define this for Wingdb */ - -#define TARGET_V850 +#define GDB_MULTI_ARCH 2 diff --git a/gdb/v850-tdep.c b/gdb/v850-tdep.c index 54a9fdf479b..e1869d04bab 100644 --- a/gdb/v850-tdep.c +++ b/gdb/v850-tdep.c @@ -1,5 +1,5 @@ /* Target-dependent code for the NEC V850 for GDB, the GNU debugger. - Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + Copyright 1996, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of GDB. @@ -30,9 +30,112 @@ #include "symfile.h" #include "arch-utils.h" #include "regcache.h" +#include "symtab.h" +struct gdbarch_tdep +{ + /* gdbarch target dependent data here. Currently unused for v850. */ +}; + +/* Extra info which is saved in each frame_info. */ +struct frame_extra_info +{ +}; -static char *v850_generic_reg_names[] = REGISTER_NAMES; +enum { + E_R0_REGNUM, + E_R1_REGNUM, + E_R2_REGNUM, E_SAVE1_START_REGNUM = E_R2_REGNUM, E_SAVE1_END_REGNUM = E_R2_REGNUM, + E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM, + E_R4_REGNUM, + E_R5_REGNUM, + E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM, + E_R7_REGNUM, + E_R8_REGNUM, + E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM, + E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM, + E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM, + E_R12_REGNUM, + E_R13_REGNUM, + E_R14_REGNUM, + E_R15_REGNUM, + E_R16_REGNUM, + E_R17_REGNUM, + E_R18_REGNUM, + E_R19_REGNUM, + E_R20_REGNUM, E_SAVE2_START_REGNUM = E_R20_REGNUM, + E_R21_REGNUM, + E_R22_REGNUM, + E_R23_REGNUM, + E_R24_REGNUM, + E_R25_REGNUM, + E_R26_REGNUM, + E_R27_REGNUM, + E_R28_REGNUM, + E_R29_REGNUM, E_SAVE2_END_REGNUM = E_R29_REGNUM, E_FP_RAW_REGNUM = E_R29_REGNUM, + E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM, + E_R31_REGNUM, E_SAVE3_START_REGNUM = E_R31_REGNUM, E_SAVE3_END_REGNUM = E_R31_REGNUM, E_RP_REGNUM = E_R31_REGNUM, + E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM, + E_R33_REGNUM, + E_R34_REGNUM, + E_R35_REGNUM, + E_R36_REGNUM, + E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM, + E_R38_REGNUM, + E_R39_REGNUM, + E_R40_REGNUM, + E_R41_REGNUM, + E_R42_REGNUM, + E_R43_REGNUM, + E_R44_REGNUM, + E_R45_REGNUM, + E_R46_REGNUM, + E_R47_REGNUM, + E_R48_REGNUM, + E_R49_REGNUM, + E_R50_REGNUM, + E_R51_REGNUM, + E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM, + E_R53_REGNUM, + E_R54_REGNUM, + E_R55_REGNUM, + E_R56_REGNUM, + E_R57_REGNUM, + E_R58_REGNUM, + E_R59_REGNUM, + E_R60_REGNUM, + E_R61_REGNUM, + E_R62_REGNUM, + E_R63_REGNUM, + E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM, + E_R65_REGNUM, E_FP_REGNUM = E_R65_REGNUM, + E_NUM_REGS +}; + +enum +{ + v850_reg_size = 4 +}; + +/* Size of all registers as a whole. */ +enum +{ + E_ALL_REGS_SIZE = (E_NUM_REGS) * v850_reg_size +}; + +static LONGEST call_dummy_nil[] = {0}; + +static char *v850_generic_reg_names[] = +{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", + "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", + "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", + "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", + "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31", + "pc", "fp" +}; static char *v850e_reg_names[] = { @@ -93,6 +196,75 @@ struct prologue_info static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs); +/* Function: v850_register_name + Returns the name of the v850/v850e register N. */ + +static char * +v850_register_name (int regnum) +{ + if (regnum < 0 || regnum >= E_NUM_REGS) + internal_error (__FILE__, __LINE__, + "v850_register_name: illegal register number %d", + regnum); + else + return v850_register_names[regnum]; + +} + +/* Function: v850_register_byte + Returns the byte position in the register cache for register N. */ + +static int +v850_register_byte (int regnum) +{ + if (regnum < 0 || regnum >= E_NUM_REGS) + internal_error (__FILE__, __LINE__, + "v850_register_byte: illegal register number %d", + regnum); + else + return regnum * v850_reg_size; +} + +/* Function: v850_register_raw_size + Returns the number of bytes occupied by the register on the target. */ + +static int +v850_register_raw_size (int regnum) +{ + if (regnum < 0 || regnum >= E_NUM_REGS) + internal_error (__FILE__, __LINE__, + "v850_register_raw_size: illegal register number %d", + regnum); + /* Only the PC has 4 Byte, all other registers 2 Byte. */ + else + return v850_reg_size; +} + +/* Function: v850_register_virtual_size + Returns the number of bytes occupied by the register as represented + internally by gdb. */ + +static int +v850_register_virtual_size (int regnum) +{ + return v850_register_raw_size (regnum); +} + +/* Function: v850_reg_virtual_type + Returns the default type for register N. */ + +static struct type * +v850_reg_virtual_type (int regnum) +{ + if (regnum < 0 || regnum >= E_NUM_REGS) + internal_error (__FILE__, __LINE__, + "v850_register_virtual_type: illegal register number %d", + regnum); + else if (regnum == E_PC_REGNUM) + return builtin_type_uint32; + else + return builtin_type_int32; +} /* Should call_function allocate stack space for a struct return? */ int @@ -150,7 +322,7 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr, it to the immediate value used to adjust SP. */ for (i = 0; reg_table[i].mask != 0; i++) if (list12 & reg_table[i].mask) - offset += REGISTER_RAW_SIZE (regtable[i].regno); + offset += v850_register_raw_size (reg_table[i].regno); pi->frameoffset -= offset; /* Calculate the offsets of the registers relative to the value @@ -163,7 +335,7 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr, if (list12 & reg_table[i].mask) { int reg = reg_table[i].regno; - offset -= REGISTER_RAW_SIZE (reg); + offset -= v850_register_raw_size (reg); pifsr->reg = reg; pifsr->offset = offset; pifsr->cur_frameoffset = pi->frameoffset; @@ -197,7 +369,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi, long offset = 0; static struct reg_list pushml_reg_table[] = { - {0x80000, PS_REGNUM}, /* PSW */ + {0x80000, E_PS_REGNUM}, /* PSW */ {0x40000, 1}, /* r1 */ {0x20000, 2}, /* r2 */ {0x10000, 3}, /* r3 */ @@ -248,7 +420,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi, it to the immediate value used to adjust SP. */ for (i = 0; reg_table[i].mask != 0; i++) if (list12 & reg_table[i].mask) - offset += REGISTER_RAW_SIZE (regtable[i].regno); + offset += v850_register_raw_size (reg_table[i].regno); pi->frameoffset -= offset; /* Calculate the offsets of the registers relative to the value @@ -261,7 +433,7 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi, if (list12 & reg_table[i].mask) { int reg = reg_table[i].regno; - offset -= REGISTER_RAW_SIZE (reg); + offset -= v850_register_raw_size (reg); pifsr->reg = reg; pifsr->offset = offset; pifsr->cur_frameoffset = pi->frameoffset; @@ -340,7 +512,7 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi) registers. */ pi->frameoffset = 0; - pi->framereg = SP_REGNUM; + pi->framereg = E_SP_REGNUM; fp_used = 0; ep_used = 0; pifsr = pi->pifsrs; @@ -397,7 +569,7 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi) } else if ((insn & 0xffc0) == 0x0200 && !regsave_func_p) { /* callt */ - long ctbp = read_register (CTBP_REGNUM); + long ctbp = read_register (E_CTBP_REGNUM); long adr = ctbp + ((insn & 0x3f) << 1); save_pc = current_pc; @@ -455,33 +627,33 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi) break; /* Ran into end of prologue */ } - else if ((insn & 0xffe0) == ((SP_REGNUM << 11) | 0x0240)) /* add ,sp */ + else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240)) /* add ,sp */ pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10; - else if (insn == ((SP_REGNUM << 11) | 0x0600 | SP_REGNUM)) /* addi ,sp,sp */ + else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM)) /* addi ,sp,sp */ pi->frameoffset += insn2; - else if (insn == ((FP_RAW_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,fp */ + else if (insn == ((E_FP_RAW_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,fp */ { fp_used = 1; - pi->framereg = FP_RAW_REGNUM; + pi->framereg = E_FP_RAW_REGNUM; } - else if (insn == ((R12_REGNUM << 11) | 0x0640 | R0_REGNUM)) /* movhi hi(const),r0,r12 */ + else if (insn == ((E_R12_REGNUM << 11) | 0x0640 | E_R0_REGNUM)) /* movhi hi(const),r0,r12 */ r12_tmp = insn2 << 16; - else if (insn == ((R12_REGNUM << 11) | 0x0620 | R12_REGNUM)) /* movea lo(const),r12,r12 */ + else if (insn == ((E_R12_REGNUM << 11) | 0x0620 | E_R12_REGNUM)) /* movea lo(const),r12,r12 */ r12_tmp += insn2; - else if (insn == ((SP_REGNUM << 11) | 0x01c0 | R12_REGNUM) && r12_tmp) /* add r12,sp */ + else if (insn == ((E_SP_REGNUM << 11) | 0x01c0 | E_R12_REGNUM) && r12_tmp) /* add r12,sp */ pi->frameoffset = r12_tmp; - else if (insn == ((EP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,ep */ + else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,ep */ ep_used = 1; - else if (insn == ((EP_REGNUM << 11) | 0x0000 | R1_REGNUM)) /* mov r1,ep */ + else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_R1_REGNUM)) /* mov r1,ep */ ep_used = 0; - else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w ,[sp] */ + else if (((insn & 0x07ff) == (0x0760 | E_SP_REGNUM) /* st.w ,[sp] */ || (fp_used - && (insn & 0x07ff) == (0x0760 | FP_RAW_REGNUM))) /* st.w ,[fp] */ + && (insn & 0x07ff) == (0x0760 | E_FP_RAW_REGNUM))) /* st.w ,[fp] */ && pifsr - && (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM) - || (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM) - || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) + && (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM) + || (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM) + || (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM))) { pifsr->reg = reg; pifsr->offset = insn2 & ~1; @@ -495,9 +667,9 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi) else if (ep_used /* sst.w ,[ep] */ && ((insn & 0x0781) == 0x0501) && pifsr - && (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM) - || (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM) - || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) + && (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM) + || (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM) + || (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM))) { pifsr->reg = reg; pifsr->offset = (insn & 0x007e) << 1; @@ -536,68 +708,25 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi) return current_pc; } -void -v850_frame_init_saved_regs (struct frame_info *fi) -{ - struct prologue_info pi; - struct pifsr pifsrs[NUM_REGS + 1], *pifsr; - CORE_ADDR func_addr, func_end; - - if (!fi->saved_regs) - { - frame_saved_regs_zalloc (fi); - - /* The call dummy doesn't save any registers on the stack, so we - can return now. */ - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return; - - /* Find the beginning of this function, so we can analyze its - prologue. */ - if (find_pc_partial_function (fi->pc, NULL, &func_addr, &func_end)) - { - pi.pifsrs = pifsrs; - - v850_scan_prologue (fi->pc, &pi); - - if (!fi->next && pi.framereg == SP_REGNUM) - fi->frame = read_register (pi.framereg) - pi.frameoffset; - - for (pifsr = pifsrs; pifsr->framereg; pifsr++) - { - fi->saved_regs[pifsr->reg] = pifsr->offset + fi->frame; - - if (pifsr->framereg == SP_REGNUM) - fi->saved_regs[pifsr->reg] += pi.frameoffset; - } - } - /* Else we're out of luck (can't debug completely stripped code). - FIXME. */ - } -} - -/* Function: init_extra_frame_info - Setup the frame's frame pointer, pc, and frame addresses for saved - registers. Most of the work is done in scan_prologue(). - - Note that when we are called for the last frame (currently active frame), - that fi->pc and fi->frame will already be setup. However, fi->frame will - be valid only if this routine uses FP. For previous frames, fi-frame will - always be correct (since that is derived from v850_frame_chain ()). - - We can be called with the PC in the call dummy under two circumstances. - First, during normal backtracing, second, while figuring out the frame - pointer just prior to calling the target function (see run_stack_dummy). */ +/* Function: find_callers_reg + Find REGNUM on the stack. Otherwise, it's in an active register. + One thing we might want to do here is to check REGNUM against the + clobber mask, and somehow flag it as invalid if it isn't saved on + the stack somewhere. This would provide a graceful failure mode + when trying to get the value of caller-saves registers for an inner + frame. */ -void -v850_init_extra_frame_info (struct frame_info *fi) +CORE_ADDR +v850_find_callers_reg (struct frame_info *fi, int regnum) { - struct prologue_info pi; - - if (fi->next) - fi->pc = FRAME_SAVED_PC (fi->next); + for (; fi; fi = fi->next) + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + return generic_read_register_dummy (fi->pc, fi->frame, regnum); + else if (fi->saved_regs[regnum] != 0) + return read_memory_unsigned_integer (fi->saved_regs[regnum], + v850_register_raw_size (regnum)); - v850_frame_init_saved_regs (fi); + return read_register (regnum); } /* Function: frame_chain @@ -616,7 +745,7 @@ v850_frame_chain (struct frame_info *fi) /* First, find out who called us */ callers_pc = FRAME_SAVED_PC (fi); /* If caller is a call-dummy, then our FP bears no relation to his FP! */ - fp = v850_find_callers_reg (fi, FP_RAW_REGNUM); + fp = v850_find_callers_reg (fi, E_FP_RAW_REGNUM); if (PC_IN_CALL_DUMMY (callers_pc, fp, fp)) return fp; /* caller is call-dummy: return oldest value of FP */ @@ -629,33 +758,12 @@ v850_frame_chain (struct frame_info *fi) if (pi.start_function) return 0; /* Don't chain beyond the start function */ - if (pi.framereg == FP_RAW_REGNUM) + if (pi.framereg == E_FP_RAW_REGNUM) return v850_find_callers_reg (fi, pi.framereg); return fi->frame - pi.frameoffset; } -/* Function: find_callers_reg - Find REGNUM on the stack. Otherwise, it's in an active register. - One thing we might want to do here is to check REGNUM against the - clobber mask, and somehow flag it as invalid if it isn't saved on - the stack somewhere. This would provide a graceful failure mode - when trying to get the value of caller-saves registers for an inner - frame. */ - -CORE_ADDR -v850_find_callers_reg (struct frame_info *fi, int regnum) -{ - for (; fi; fi = fi->next) - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy (fi->pc, fi->frame, regnum); - else if (fi->saved_regs[regnum] != 0) - return read_memory_unsigned_integer (fi->saved_regs[regnum], - REGISTER_RAW_SIZE (regnum)); - - return read_register (regnum); -} - /* Function: skip_prologue Return the address of the first code past the prologue of the function. */ @@ -690,23 +798,24 @@ v850_skip_prologue (CORE_ADDR pc) command, or the call dummy breakpoint gets hit. */ void -v850_pop_frame (struct frame_info *frame) +v850_pop_frame (void) { + struct frame_info *frame = get_current_frame (); int regnum; if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) generic_pop_dummy_frame (); else { - write_register (PC_REGNUM, FRAME_SAVED_PC (frame)); + write_register (E_PC_REGNUM, FRAME_SAVED_PC (frame)); - for (regnum = 0; regnum < NUM_REGS; regnum++) + for (regnum = 0; regnum < E_NUM_REGS; regnum++) if (frame->saved_regs[regnum] != 0) write_register (regnum, read_memory_unsigned_integer (frame->saved_regs[regnum], - REGISTER_RAW_SIZE (regnum))); + v850_register_raw_size (regnum))); - write_register (SP_REGNUM, FRAME_FP (frame)); + write_register (E_SP_REGNUM, FRAME_FP (frame)); } flush_cached_frames (); @@ -725,7 +834,7 @@ v850_pop_frame (struct frame_info *frame) CORE_ADDR v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - unsigned char struct_return, CORE_ADDR struct_addr) + int struct_return, CORE_ADDR struct_addr) { int argreg; int argnum; @@ -741,7 +850,7 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, sp -= len; /* possibly over-allocating, but it works... */ /* (you might think we could allocate 16 bytes */ /* less, but the ABI seems to use it all! ) */ - argreg = ARG0_REGNUM; + argreg = E_ARG0_REGNUM; /* the struct_return pointer occupies the first parameter-passing reg */ if (struct_return) @@ -759,7 +868,7 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, { int len; char *val; - char valbuf[REGISTER_RAW_SIZE (ARG0_REGNUM)]; + char valbuf[v850_register_raw_size (E_ARG0_REGNUM)]; if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT && TYPE_LENGTH (VALUE_TYPE (*args)) > 8) @@ -775,15 +884,15 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, } while (len > 0) - if (argreg <= ARGLAST_REGNUM) + if (argreg <= E_ARGLAST_REGNUM) { CORE_ADDR regval; - regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); + regval = extract_address (val, v850_register_raw_size (argreg)); write_register (argreg, regval); - len -= REGISTER_RAW_SIZE (argreg); - val += REGISTER_RAW_SIZE (argreg); + len -= v850_register_raw_size (argreg); + val += v850_register_raw_size (argreg); argreg++; } else @@ -806,12 +915,12 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp, CORE_ADDR v850_push_return_address (CORE_ADDR pc, CORE_ADDR sp) { - write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ()); + write_register (E_RP_REGNUM, CALL_DUMMY_ADDRESS ()); return sp; } /* Function: frame_saved_pc - Find the caller of this frame. We do this by seeing if RP_REGNUM + Find the caller of this frame. We do this by seeing if E_RP_REGNUM is saved in the stack anywhere, otherwise we get it from the registers. If the inner frame is a dummy frame, return its PC instead of RP, because that's where "caller" of the dummy-frame @@ -821,9 +930,9 @@ CORE_ADDR v850_frame_saved_pc (struct frame_info *fi) { if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); + return generic_read_register_dummy (fi->pc, fi->frame, E_PC_REGNUM); else - return v850_find_callers_reg (fi, RP_REGNUM); + return v850_find_callers_reg (fi, E_RP_REGNUM); } @@ -834,7 +943,7 @@ v850_frame_saved_pc (struct frame_info *fi) trap */ -int +void v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs, struct value **args, struct type *type, int gcc_p) { @@ -846,12 +955,122 @@ v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs, store_unsigned_integer ((unsigned int *) &dummy[2], 2, offset24 & 0xffff); store_unsigned_integer ((unsigned int *) &dummy[0], 2, offset24 >> 16); - return 0; +} + +static CORE_ADDR +v850_saved_pc_after_call (struct frame_info *ignore) +{ + return read_register (E_RP_REGNUM); +} + +static void +v850_extract_return_value (struct type *type, char *regbuf, char *valbuf) +{ + memcpy (valbuf, regbuf + v850_register_byte (E_V0_REGNUM), + TYPE_LENGTH (type)); +} + +const static unsigned char * +v850_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) +{ + static unsigned char breakpoint[] = { 0x85, 0x05 }; + *lenptr = sizeof (breakpoint); + return breakpoint; +} + +static CORE_ADDR +v850_extract_struct_value_address (char *regbuf) +{ + return extract_address (regbuf + v850_register_byte (E_V0_REGNUM), + v850_register_raw_size (E_V0_REGNUM)); +} + +static void +v850_store_return_value (struct type *type, char *valbuf) +{ + write_register_bytes(v850_register_byte (E_V0_REGNUM), valbuf, + TYPE_LENGTH (type)); +} + +static void +v850_frame_init_saved_regs (struct frame_info *fi) +{ + struct prologue_info pi; + struct pifsr pifsrs[E_NUM_REGS + 1], *pifsr; + CORE_ADDR func_addr, func_end; + + if (!fi->saved_regs) + { + frame_saved_regs_zalloc (fi); + + /* The call dummy doesn't save any registers on the stack, so we + can return now. */ + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + return; + + /* Find the beginning of this function, so we can analyze its + prologue. */ + if (find_pc_partial_function (fi->pc, NULL, &func_addr, &func_end)) + { + pi.pifsrs = pifsrs; + + v850_scan_prologue (fi->pc, &pi); + + if (!fi->next && pi.framereg == E_SP_REGNUM) + fi->frame = read_register (pi.framereg) - pi.frameoffset; + + for (pifsr = pifsrs; pifsr->framereg; pifsr++) + { + fi->saved_regs[pifsr->reg] = pifsr->offset + fi->frame; + + if (pifsr->framereg == E_SP_REGNUM) + fi->saved_regs[pifsr->reg] += pi.frameoffset; + } + } + /* Else we're out of luck (can't debug completely stripped code). + FIXME. */ + } +} + +/* Function: init_extra_frame_info + Setup the frame's frame pointer, pc, and frame addresses for saved + registers. Most of the work is done in scan_prologue(). + + Note that when we are called for the last frame (currently active frame), + that fi->pc and fi->frame will already be setup. However, fi->frame will + be valid only if this routine uses FP. For previous frames, fi-frame will + always be correct (since that is derived from v850_frame_chain ()). + + We can be called with the PC in the call dummy under two circumstances. + First, during normal backtracing, second, while figuring out the frame + pointer just prior to calling the target function (see run_stack_dummy). */ + +static void +v850_init_extra_frame_info (int fromleaf, struct frame_info *fi) +{ + struct prologue_info pi; + + if (fi->next) + fi->pc = FRAME_SAVED_PC (fi->next); + + v850_frame_init_saved_regs (fi); +} + +static void +v850_store_struct_return (CORE_ADDR a, CORE_ADDR b) +{ +} + +static CORE_ADDR +v850_target_read_fp (void) +{ + return read_register (E_FP_RAW_REGNUM); } static struct gdbarch * v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) { + static LONGEST call_dummy_words[1] = { 0 }; struct gdbarch_tdep *tdep = NULL; struct gdbarch *gdbarch; int i; @@ -865,22 +1084,109 @@ v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep)); #endif + /* Change the register names based on the current machine type. */ if (info.bfd_arch_info->arch != bfd_arch_v850) return 0; gdbarch = gdbarch_alloc (&info, 0); - /* Change the register names based on the current machine type. */ for (i = 0; v850_processor_type_table[i].regnames != NULL; i++) { if (v850_processor_type_table[i].mach == info.bfd_arch_info->mach) - { - v850_register_names = v850_processor_type_table[i].regnames; - tm_print_insn_info.mach = info.bfd_arch_info->mach; - break; - } + { + v850_register_names = v850_processor_type_table[i].regnames; + tm_print_insn_info.mach = info.bfd_arch_info->mach; + break; + } } + /* + * Basic register fields and methods. + */ + set_gdbarch_num_regs (gdbarch, E_NUM_REGS); + set_gdbarch_num_pseudo_regs (gdbarch, 0); + set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM); + set_gdbarch_fp_regnum (gdbarch, E_FP_REGNUM); + set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM); + set_gdbarch_register_name (gdbarch, v850_register_name); + set_gdbarch_register_size (gdbarch, v850_reg_size); + set_gdbarch_register_bytes (gdbarch, E_ALL_REGS_SIZE); + set_gdbarch_register_byte (gdbarch, v850_register_byte); + set_gdbarch_register_raw_size (gdbarch, v850_register_raw_size); + set_gdbarch_max_register_raw_size (gdbarch, v850_reg_size); + set_gdbarch_register_virtual_size (gdbarch, v850_register_raw_size); + set_gdbarch_max_register_virtual_size (gdbarch, v850_reg_size); + set_gdbarch_register_virtual_type (gdbarch, v850_reg_virtual_type); + + set_gdbarch_read_fp (gdbarch, v850_target_read_fp); + + /* + * Frame Info + */ + set_gdbarch_init_extra_frame_info (gdbarch, v850_init_extra_frame_info); + set_gdbarch_frame_init_saved_regs (gdbarch, v850_frame_init_saved_regs); + set_gdbarch_frame_chain (gdbarch, v850_frame_chain); + set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); + set_gdbarch_saved_pc_after_call (gdbarch, v850_saved_pc_after_call); + set_gdbarch_frame_saved_pc (gdbarch, v850_frame_saved_pc); + set_gdbarch_skip_prologue (gdbarch, v850_skip_prologue); + set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); + set_gdbarch_frame_args_address (gdbarch, default_frame_address); + set_gdbarch_frame_locals_address (gdbarch, default_frame_address); + + /* + * Miscelany + */ + /* Stack grows up. */ + set_gdbarch_inner_than (gdbarch, core_addr_lessthan); + /* PC stops zero byte after a trap instruction + (which means: exactly on trap instruction). */ + set_gdbarch_decr_pc_after_break (gdbarch, 0); + /* This value is almost never non-zero... */ + set_gdbarch_function_start_offset (gdbarch, 0); + /* This value is almost never non-zero... */ + set_gdbarch_frame_args_skip (gdbarch, 0); + /* OK to default this value to 'unknown'. */ + set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); + /* W/o prototype, coerce float args to double. */ + set_gdbarch_coerce_float_to_double (gdbarch, standard_coerce_float_to_double); + + /* + * Call Dummies + * + * These values and methods are used when gdb calls a target function. */ + set_gdbarch_use_generic_dummy_frames (gdbarch, 1); + set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); + set_gdbarch_push_return_address (gdbarch, v850_push_return_address); + set_gdbarch_extract_return_value (gdbarch, v850_extract_return_value); + set_gdbarch_push_arguments (gdbarch, v850_push_arguments); + set_gdbarch_pop_frame (gdbarch, v850_pop_frame); + set_gdbarch_store_struct_return (gdbarch, v850_store_struct_return); + set_gdbarch_store_return_value (gdbarch, v850_store_return_value); + set_gdbarch_extract_struct_value_address (gdbarch, v850_extract_struct_value_address); + set_gdbarch_use_struct_convention (gdbarch, v850_use_struct_convention); + set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); + set_gdbarch_call_dummy_address (gdbarch, entry_point_address); + set_gdbarch_call_dummy_start_offset (gdbarch, 0); + set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); + set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); + set_gdbarch_call_dummy_length (gdbarch, 0); + set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy); + set_gdbarch_call_dummy_p (gdbarch, 1); + set_gdbarch_call_dummy_words (gdbarch, call_dummy_nil); + set_gdbarch_sizeof_call_dummy_words (gdbarch, 0); + set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); + /* set_gdbarch_call_dummy_stack_adjust */ + set_gdbarch_fix_call_dummy (gdbarch, v850_fix_call_dummy); + set_gdbarch_breakpoint_from_pc (gdbarch, v850_breakpoint_from_pc); + + set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); + + set_gdbarch_extra_stack_alignment_needed (gdbarch, 0); + return gdbarch; }