diff options
Diffstat (limited to 'gdb/sh-tdep.c')
| -rw-r--r-- | gdb/sh-tdep.c | 4613 |
1 files changed, 0 insertions, 4613 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c deleted file mode 100644 index b133b03..0000000 --- a/gdb/sh-tdep.c +++ /dev/null @@ -1,4613 +0,0 @@ -/* Target-dependent code for Hitachi Super-H, for GDB. - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 - Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* - Contributed by Steve Chamberlain - sac@cygnus.com - */ - -#include "defs.h" -#include "frame.h" -#include "symtab.h" -#include "symfile.h" -#include "gdbtypes.h" -#include "gdbcmd.h" -#include "gdbcore.h" -#include "value.h" -#include "dis-asm.h" -#include "inferior.h" /* for BEFORE_TEXT_END etc. */ -#include "gdb_string.h" -#include "arch-utils.h" -#include "floatformat.h" -#include "regcache.h" -#include "doublest.h" - -#include "sh-tdep.h" - -#include "elf-bfd.h" -#include "solib-svr4.h" - -/* sh64 flags */ -#include "elf/sh.h" -/* registers numbers shared with the simulator */ -#include "gdb/sim-sh.h" - -void (*sh_show_regs) (void); -CORE_ADDR (*skip_prologue_hard_way) (CORE_ADDR); -void (*do_pseudo_register) (int); - -#define SH_DEFAULT_NUM_REGS 59 - -/* Define other aspects of the stack frame. - we keep a copy of the worked out return pc lying around, since it - is a useful bit of info */ - -struct frame_extra_info -{ - CORE_ADDR return_pc; - int leaf_function; - int f_offset; -}; - -static const char * -sh_generic_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "fpul", "fpscr", - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh3_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1" - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh3e_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "fpul", "fpscr", - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh_dsp_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "dsr", - "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", - "y0", "y1", "", "", "", "", "", "mod", - "", "", - "rs", "re", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh3_dsp_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "dsr", - "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", - "y0", "y1", "", "", "", "", "", "mod", - "ssr", "spc", - "rs", "re", "", "", "", "", "", "", - "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b" - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh4_register_name (int reg_nr) -{ - static char *register_names[] = - { - /* general registers 0-15 */ - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - /* 16 - 22 */ - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - /* 23, 24 */ - "fpul", "fpscr", - /* floating point registers 25 - 40 */ - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - /* 41, 42 */ - "ssr", "spc", - /* bank 0 43 - 50 */ - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - /* bank 1 51 - 58 */ - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - /* double precision (pseudo) 59 - 66 */ - "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", - /* vectors (pseudo) 67 - 70 */ - "fv0", "fv4", "fv8", "fv12", - /* FIXME: missing XF 71 - 86 */ - /* FIXME: missing XD 87 - 94 */ - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static const char * -sh_sh64_register_name (int reg_nr) -{ - static char *register_names[] = - { - /* SH MEDIA MODE (ISA 32) */ - /* general registers (64-bit) 0-63 */ - "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", - "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", - "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", - "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", - "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", - - /* pc (64-bit) 64 */ - "pc", - - /* status reg., saved status reg., saved pc reg. (64-bit) 65-67 */ - "sr", "ssr", "spc", - - /* target registers (64-bit) 68-75*/ - "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", - - /* floating point state control register (32-bit) 76 */ - "fpscr", - - /* single precision floating point registers (32-bit) 77-140*/ - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", - "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", - "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", - "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", - "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", - "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", - - /* double precision registers (pseudo) 141-172 */ - "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", - "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", - "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", - "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62", - - /* floating point pairs (pseudo) 173-204*/ - "fp0", "fp2", "fp4", "fp6", "fp8", "fp10", "fp12", "fp14", - "fp16", "fp18", "fp20", "fp22", "fp24", "fp26", "fp28", "fp30", - "fp32", "fp34", "fp36", "fp38", "fp40", "fp42", "fp44", "fp46", - "fp48", "fp50", "fp52", "fp54", "fp56", "fp58", "fp60", "fp62", - - /* floating point vectors (4 floating point regs) (pseudo) 205-220*/ - "fv0", "fv4", "fv8", "fv12", "fv16", "fv20", "fv24", "fv28", - "fv32", "fv36", "fv40", "fv44", "fv48", "fv52", "fv56", "fv60", - - /* SH COMPACT MODE (ISA 16) (all pseudo) 221-272*/ - "r0_c", "r1_c", "r2_c", "r3_c", "r4_c", "r5_c", "r6_c", "r7_c", - "r8_c", "r9_c", "r10_c", "r11_c", "r12_c", "r13_c", "r14_c", "r15_c", - "pc_c", - "gbr_c", "mach_c", "macl_c", "pr_c", "t_c", - "fpscr_c", "fpul_c", - "fr0_c", "fr1_c", "fr2_c", "fr3_c", "fr4_c", "fr5_c", "fr6_c", "fr7_c", - "fr8_c", "fr9_c", "fr10_c", "fr11_c", "fr12_c", "fr13_c", "fr14_c", "fr15_c", - "dr0_c", "dr2_c", "dr4_c", "dr6_c", "dr8_c", "dr10_c", "dr12_c", "dr14_c", - "fv0_c", "fv4_c", "fv8_c", "fv12_c", - /* FIXME!!!! XF0 XF15, XD0 XD14 ?????*/ - }; - - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -#define NUM_PSEUDO_REGS_SH_MEDIA 80 -#define NUM_PSEUDO_REGS_SH_COMPACT 51 - -static const unsigned char * -sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) -{ - /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */ - static unsigned char breakpoint[] = {0xc3, 0xc3}; - - *lenptr = sizeof (breakpoint); - return breakpoint; -} - -/* Macros and functions for setting and testing a bit in a minimal - symbol that marks it as 32-bit function. The MSB of the minimal - symbol's "info" field is used for this purpose. This field is - already being used to store the symbol size, so the assumption is - that the symbol size cannot exceed 2^31. - - ELF_MAKE_MSYMBOL_SPECIAL - tests whether an ELF symbol is "special", i.e. refers - to a 32-bit function, and sets a "special" bit in a - minimal symbol to mark it as a 32-bit function - MSYMBOL_IS_SPECIAL tests the "special" bit in a minimal symbol - MSYMBOL_SIZE returns the size of the minimal symbol, i.e. - the "info" field with the "special" bit masked out */ - -#define MSYMBOL_IS_SPECIAL(msym) \ - (((long) MSYMBOL_INFO (msym) & 0x80000000) != 0) - -void -sh64_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) -{ - if (msym == NULL) - return; - - if (((elf_symbol_type *)(sym))->internal_elf_sym.st_other == STO_SH5_ISA32) - { - MSYMBOL_INFO (msym) = (char *) (((long) MSYMBOL_INFO (msym)) | 0x80000000); - SYMBOL_VALUE_ADDRESS (msym) |= 1; - } -} - -/* ISA32 (shmedia) function addresses are odd (bit 0 is set). Here - are some macros to test, set, or clear bit 0 of addresses. */ -#define IS_ISA32_ADDR(addr) ((addr) & 1) -#define MAKE_ISA32_ADDR(addr) ((addr) | 1) -#define UNMAKE_ISA32_ADDR(addr) ((addr) & ~1) - -static int -pc_is_isa32 (bfd_vma memaddr) -{ - struct minimal_symbol *sym; - - /* If bit 0 of the address is set, assume this is a - ISA32 (shmedia) address. */ - if (IS_ISA32_ADDR (memaddr)) - return 1; - - /* A flag indicating that this is a ISA32 function is stored by elfread.c in - the high bit of the info field. Use this to decide if the function is - ISA16 or ISA32. */ - sym = lookup_minimal_symbol_by_pc (memaddr); - if (sym) - return MSYMBOL_IS_SPECIAL (sym); - else - return 0; -} - -static const unsigned char * -sh_sh64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) -{ - /* The BRK instruction for shmedia is - 01101111 11110101 11111111 11110000 - which translates in big endian mode to 0x6f, 0xf5, 0xff, 0xf0 - and in little endian mode to 0xf0, 0xff, 0xf5, 0x6f */ - - /* The BRK instruction for shcompact is - 00000000 00111011 - which translates in big endian mode to 0x0, 0x3b - and in little endian mode to 0x3b, 0x0*/ - - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - if (pc_is_isa32 (*pcptr)) - { - static unsigned char big_breakpoint_media[] = {0x6f, 0xf5, 0xff, 0xf0}; - *pcptr = UNMAKE_ISA32_ADDR (*pcptr); - *lenptr = sizeof (big_breakpoint_media); - return big_breakpoint_media; - } - else - { - static unsigned char big_breakpoint_compact[] = {0x0, 0x3b}; - *lenptr = sizeof (big_breakpoint_compact); - return big_breakpoint_compact; - } - } - else - { - if (pc_is_isa32 (*pcptr)) - { - static unsigned char little_breakpoint_media[] = {0xf0, 0xff, 0xf5, 0x6f}; - *pcptr = UNMAKE_ISA32_ADDR (*pcptr); - *lenptr = sizeof (little_breakpoint_media); - return little_breakpoint_media; - } - else - { - static unsigned char little_breakpoint_compact[] = {0x3b, 0x0}; - *lenptr = sizeof (little_breakpoint_compact); - return little_breakpoint_compact; - } - } -} - -/* Prologue looks like - [mov.l <regs>,@-r15]... - [sts.l pr,@-r15] - [mov.l r14,@-r15] - [mov r15,r14] - - Actually it can be more complicated than this. For instance, with - newer gcc's: - - mov.l r14,@-r15 - add #-12,r15 - mov r15,r14 - mov r4,r1 - mov r5,r2 - mov.l r6,@(4,r14) - mov.l r7,@(8,r14) - mov.b r1,@r14 - mov r14,r1 - mov r14,r1 - add #2,r1 - mov.w r2,@r1 - - */ - -/* PTABS/L Rn, TRa 0110101111110001nnnnnnl00aaa0000 - with l=1 and n = 18 0110101111110001010010100aaa0000 */ -#define IS_PTABSL_R18(x) (((x) & 0xffffff8f) == 0x6bf14a00) - -/* STS.L PR,@-r0 0100000000100010 - r0-4-->r0, PR-->(r0) */ -#define IS_STS_R0(x) ((x) == 0x4022) - -/* STS PR, Rm 0000mmmm00101010 - PR-->Rm */ -#define IS_STS_PR(x) (((x) & 0xf0ff) == 0x2a) - -/* MOV.L Rm,@(disp,r15) 00011111mmmmdddd - Rm-->(dispx4+r15) */ -#define IS_MOV_TO_R15(x) (((x) & 0xff00) == 0x1f00) - -/* MOV.L R14,@(disp,r15) 000111111110dddd - R14-->(dispx4+r15) */ -#define IS_MOV_R14(x) (((x) & 0xfff0) == 0x1fe0) - -/* ST.Q R14, disp, R18 101011001110dddddddddd0100100000 - R18-->(dispx8+R14) */ -#define IS_STQ_R18_R14(x) (((x) & 0xfff003ff) == 0xace00120) - -/* ST.Q R15, disp, R18 101011001111dddddddddd0100100000 - R18-->(dispx8+R15) */ -#define IS_STQ_R18_R15(x) (((x) & 0xfff003ff) == 0xacf00120) - -/* ST.L R15, disp, R18 101010001111dddddddddd0100100000 - R18-->(dispx4+R15) */ -#define IS_STL_R18_R15(x) (((x) & 0xfff003ff) == 0xa8f00120) - -/* ST.Q R15, disp, R14 1010 1100 1111 dddd dddd dd00 1110 0000 - R14-->(dispx8+R15) */ -#define IS_STQ_R14_R15(x) (((x) & 0xfff003ff) == 0xacf000e0) - -/* ST.L R15, disp, R14 1010 1000 1111 dddd dddd dd00 1110 0000 - R14-->(dispx4+R15) */ -#define IS_STL_R14_R15(x) (((x) & 0xfff003ff) == 0xa8f000e0) - -/* ADDI.L R15,imm,R15 1101 0100 1111 ssss ssss ss00 1111 0000 - R15 + imm --> R15 */ -#define IS_ADDIL_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd4f000f0) - -/* ADDI R15,imm,R15 1101 0000 1111 ssss ssss ss00 1111 0000 - R15 + imm --> R15 */ -#define IS_ADDI_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd0f000f0) - -/* ADD.L R15,R63,R14 0000 0000 1111 1000 1111 1100 1110 0000 - R15 + R63 --> R14 */ -#define IS_ADDL_SP_FP_MEDIA(x) ((x) == 0x00f8fce0) - -/* ADD R15,R63,R14 0000 0000 1111 1001 1111 1100 1110 0000 - R15 + R63 --> R14 */ -#define IS_ADD_SP_FP_MEDIA(x) ((x) == 0x00f9fce0) - -#define IS_MOV_SP_FP_MEDIA(x) (IS_ADDL_SP_FP_MEDIA(x) || IS_ADD_SP_FP_MEDIA(x)) - -/* MOV #imm, R0 1110 0000 ssss ssss - #imm-->R0 */ -#define IS_MOV_R0(x) (((x) & 0xff00) == 0xe000) - -/* MOV.L @(disp,PC), R0 1101 0000 iiii iiii */ -#define IS_MOVL_R0(x) (((x) & 0xff00) == 0xd000) - -/* ADD r15,r0 0011 0000 1111 1100 - r15+r0-->r0 */ -#define IS_ADD_SP_R0(x) ((x) == 0x30fc) - -/* MOV.L R14 @-R0 0010 0000 1110 0110 - R14-->(R0-4), R0-4-->R0 */ -#define IS_MOV_R14_R0(x) ((x) == 0x20e6) - -/* ADD Rm,R63,Rn Rm+R63-->Rn 0000 00mm mmmm 1001 1111 11nn nnnn 0000 - where Rm is one of r2-r9 which are the argument registers. */ -/* FIXME: Recognize the float and double register moves too! */ -#define IS_MEDIA_IND_ARG_MOV(x) \ -((((x) & 0xfc0ffc0f) == 0x0009fc00) && (((x) & 0x03f00000) >= 0x00200000 && ((x) & 0x03f00000) <= 0x00900000)) - -/* ST.Q Rn,0,Rm Rm-->Rn+0 1010 11nn nnnn 0000 0000 00mm mmmm 0000 - or ST.L Rn,0,Rm Rm-->Rn+0 1010 10nn nnnn 0000 0000 00mm mmmm 0000 - where Rm is one of r2-r9 which are the argument registers. */ -#define IS_MEDIA_ARG_MOV(x) \ -(((((x) & 0xfc0ffc0f) == 0xac000000) || (((x) & 0xfc0ffc0f) == 0xa8000000)) \ - && (((x) & 0x000003f0) >= 0x00000020 && ((x) & 0x000003f0) <= 0x00000090)) - -/* ST.B R14,0,Rn Rn-->(R14+0) 1010 0000 1110 0000 0000 00nn nnnn 0000*/ -/* ST.W R14,0,Rn Rn-->(R14+0) 1010 0100 1110 0000 0000 00nn nnnn 0000*/ -/* ST.L R14,0,Rn Rn-->(R14+0) 1010 1000 1110 0000 0000 00nn nnnn 0000*/ -/* FST.S R14,0,FRn Rn-->(R14+0) 1011 0100 1110 0000 0000 00nn nnnn 0000*/ -/* FST.D R14,0,DRn Rn-->(R14+0) 1011 1100 1110 0000 0000 00nn nnnn 0000*/ -#define IS_MEDIA_MOV_TO_R14(x) \ -((((x) & 0xfffffc0f) == 0xa0e00000) \ -|| (((x) & 0xfffffc0f) == 0xa4e00000) \ -|| (((x) & 0xfffffc0f) == 0xa8e00000) \ -|| (((x) & 0xfffffc0f) == 0xb4e00000) \ -|| (((x) & 0xfffffc0f) == 0xbce00000)) - -/* MOV Rm, Rn Rm-->Rn 0110 nnnn mmmm 0011 - where Rm is r2-r9 */ -#define IS_COMPACT_IND_ARG_MOV(x) \ -((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0020) && (((x) & 0x00f0) <= 0x0090)) - -/* compact direct arg move! - MOV.L Rn, @r14 0010 1110 mmmm 0010 */ -#define IS_COMPACT_ARG_MOV(x) \ -(((((x) & 0xff0f) == 0x2e02) && (((x) & 0x00f0) >= 0x0020) && ((x) & 0x00f0) <= 0x0090)) - -/* MOV.B Rm, @R14 0010 1110 mmmm 0000 - MOV.W Rm, @R14 0010 1110 mmmm 0001 */ -#define IS_COMPACT_MOV_TO_R14(x) \ -((((x) & 0xff0f) == 0x2e00) || (((x) & 0xff0f) == 0x2e01)) - -#define IS_JSR_R0(x) ((x) == 0x400b) -#define IS_NOP(x) ((x) == 0x0009) - - -/* STS.L PR,@-r15 0100111100100010 - r15-4-->r15, PR-->(r15) */ -#define IS_STS(x) ((x) == 0x4f22) - -/* MOV.L Rm,@-r15 00101111mmmm0110 - r15-4-->r15, Rm-->(R15) */ -#define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) - -#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf) - -/* MOV r15,r14 0110111011110011 - r15-->r14 */ -#define IS_MOV_SP_FP(x) ((x) == 0x6ef3) - -/* ADD #imm,r15 01111111iiiiiiii - r15+imm-->r15 */ -#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00) - -#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00) -#define IS_SHLL_R3(x) ((x) == 0x4300) - -/* ADD r3,r15 0011111100111100 - r15+r3-->r15 */ -#define IS_ADD_R3SP(x) ((x) == 0x3f3c) - -/* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011 - FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011 - FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */ -#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) - -/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 - MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd - MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010 - where Rm is one of r4,r5,r6,r7 which are the argument registers. */ -#define IS_ARG_MOV(x) \ -(((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ - || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ - || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))) - -/* MOV.L Rm,@(disp,r14) 00011110mmmmdddd - Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */ -#define IS_MOV_TO_R14(x) \ - ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) - -#define FPSCR_SZ (1 << 20) - -/* Skip any prologue before the guts of a function */ - -/* Skip the prologue using the debug information. If this fails we'll - fall back on the 'guess' method below. */ -static CORE_ADDR -after_prologue (CORE_ADDR pc) -{ - struct symtab_and_line sal; - CORE_ADDR func_addr, func_end; - - /* If we can not find the symbol in the partial symbol table, then - there is no hope we can determine the function's start address - with this code. */ - if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) - return 0; - - /* Get the line associated with FUNC_ADDR. */ - sal = find_pc_line (func_addr, 0); - - /* There are only two cases to consider. First, the end of the source line - is within the function bounds. In that case we return the end of the - source line. Second is the end of the source line extends beyond the - bounds of the current function. We need to use the slow code to - examine instructions in that case. */ - if (sal.end < func_end) - return sal.end; - else - return 0; -} - -/* Here we look at each instruction in the function, and try to guess - where the prologue ends. Unfortunately this is not always - accurate. */ -static CORE_ADDR -sh_skip_prologue_hard_way (CORE_ADDR start_pc) -{ - CORE_ADDR here, end; - int updated_fp = 0; - - if (!start_pc) - return 0; - - for (here = start_pc, end = start_pc + (2 * 28); here < end;) - { - int w = read_memory_integer (here, 2); - here += 2; - if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w) - || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w) - || IS_ARG_MOV (w) || IS_MOV_TO_R14 (w)) - { - start_pc = here; - } - else if (IS_MOV_SP_FP (w)) - { - start_pc = here; - updated_fp = 1; - } - else - /* Don't bail out yet, if we are before the copy of sp. */ - if (updated_fp) - break; - } - - return start_pc; -} - -static CORE_ADDR -look_for_args_moves (CORE_ADDR start_pc, int media_mode) -{ - CORE_ADDR here, end; - int w; - int insn_size = (media_mode ? 4 : 2); - - for (here = start_pc, end = start_pc + (insn_size * 28); here < end;) - { - if (media_mode) - { - w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size); - here += insn_size; - if (IS_MEDIA_IND_ARG_MOV (w)) - { - /* This must be followed by a store to r14, so the argument - is where the debug info says it is. This can happen after - the SP has been saved, unfortunately. */ - - int next_insn = read_memory_integer (UNMAKE_ISA32_ADDR (here), - insn_size); - here += insn_size; - if (IS_MEDIA_MOV_TO_R14 (next_insn)) - start_pc = here; - } - else if (IS_MEDIA_ARG_MOV (w)) - { - /* These instructions store directly the argument in r14. */ - start_pc = here; - } - else - break; - } - else - { - w = read_memory_integer (here, insn_size); - w = w & 0xffff; - here += insn_size; - if (IS_COMPACT_IND_ARG_MOV (w)) - { - /* This must be followed by a store to r14, so the argument - is where the debug info says it is. This can happen after - the SP has been saved, unfortunately. */ - - int next_insn = 0xffff & read_memory_integer (here, insn_size); - here += insn_size; - if (IS_COMPACT_MOV_TO_R14 (next_insn)) - start_pc = here; - } - else if (IS_COMPACT_ARG_MOV (w)) - { - /* These instructions store directly the argument in r14. */ - start_pc = here; - } - else if (IS_MOVL_R0 (w)) - { - /* There is a function that gcc calls to get the arguments - passed correctly to the function. Only after this - function call the arguments will be found at the place - where they are supposed to be. This happens in case the - argument has to be stored into a 64-bit register (for - instance doubles, long longs). SHcompact doesn't have - access to the full 64-bits, so we store the register in - stack slot and store the address of the stack slot in - the register, then do a call through a wrapper that - loads the memory value into the register. A SHcompact - callee calls an argument decoder - (GCC_shcompact_incoming_args) that stores the 64-bit - value in a stack slot and stores the address of the - stack slot in the register. GCC thinks the argument is - just passed by transparent reference, but this is only - true after the argument decoder is called. Such a call - needs to be considered part of the prologue. */ - - /* This must be followed by a JSR @r0 instruction and by - a NOP instruction. After these, the prologue is over! */ - - int next_insn = 0xffff & read_memory_integer (here, insn_size); - here += insn_size; - if (IS_JSR_R0 (next_insn)) - { - next_insn = 0xffff & read_memory_integer (here, insn_size); - here += insn_size; - - if (IS_NOP (next_insn)) - start_pc = here; - } - } - else - break; - } - } - - return start_pc; -} - -static CORE_ADDR -sh64_skip_prologue_hard_way (CORE_ADDR start_pc) -{ - CORE_ADDR here, end; - int updated_fp = 0; - int insn_size = 4; - int media_mode = 1; - - if (!start_pc) - return 0; - - if (pc_is_isa32 (start_pc) == 0) - { - insn_size = 2; - media_mode = 0; - } - - for (here = start_pc, end = start_pc + (insn_size * 28); here < end;) - { - - if (media_mode) - { - int w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size); - here += insn_size; - if (IS_STQ_R18_R14 (w) || IS_STQ_R18_R15 (w) || IS_STQ_R14_R15 (w) - || IS_STL_R14_R15 (w) || IS_STL_R18_R15 (w) - || IS_ADDIL_SP_MEDIA (w) || IS_ADDI_SP_MEDIA (w) || IS_PTABSL_R18 (w)) - { - start_pc = here; - } - else if (IS_MOV_SP_FP (w) || IS_MOV_SP_FP_MEDIA(w)) - { - start_pc = here; - updated_fp = 1; - } - else - if (updated_fp) - { - /* Don't bail out yet, we may have arguments stored in - registers here, according to the debug info, so that - gdb can print the frames correctly. */ - start_pc = look_for_args_moves (here - insn_size, media_mode); - break; - } - } - else - { - int w = 0xffff & read_memory_integer (here, insn_size); - here += insn_size; - - if (IS_STS_R0 (w) || IS_STS_PR (w) - || IS_MOV_TO_R15 (w) || IS_MOV_R14 (w) - || IS_MOV_R0 (w) || IS_ADD_SP_R0 (w) || IS_MOV_R14_R0 (w)) - { - start_pc = here; - } - else if (IS_MOV_SP_FP (w)) - { - start_pc = here; - updated_fp = 1; - } - else - if (updated_fp) - { - /* Don't bail out yet, we may have arguments stored in - registers here, according to the debug info, so that - gdb can print the frames correctly. */ - start_pc = look_for_args_moves (here - insn_size, media_mode); - break; - } - } - } - - return start_pc; -} - -static CORE_ADDR -sh_skip_prologue (CORE_ADDR pc) -{ - CORE_ADDR post_prologue_pc; - - /* See if we can determine the end of the prologue via the symbol table. - If so, then return either PC, or the PC after the prologue, whichever - is greater. */ - post_prologue_pc = after_prologue (pc); - - /* If after_prologue returned a useful address, then use it. Else - fall back on the instruction skipping code. */ - if (post_prologue_pc != 0) - return max (pc, post_prologue_pc); - else - return (skip_prologue_hard_way (pc)); -} - -/* Immediately after a function call, return the saved pc. - Can't always go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. - - The return address is the value saved in the PR register + 4 */ -static CORE_ADDR -sh_saved_pc_after_call (struct frame_info *frame) -{ - return (ADDR_BITS_REMOVE (read_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM))); -} - -/* Should call_function allocate stack space for a struct return? */ -static int -sh_use_struct_convention (int gcc_p, struct type *type) -{ - return (TYPE_LENGTH (type) > 1); -} - -static int -sh64_use_struct_convention (int gcc_p, struct type *type) -{ - return (TYPE_LENGTH (type) > 8); -} - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. - - We store structs through a pointer passed in R2 */ -static void -sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) -{ - write_register (STRUCT_RETURN_REGNUM, (addr)); -} - -/* Disassemble an instruction. */ -static int -gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info) -{ - info->endian = TARGET_BYTE_ORDER; - return print_insn_sh (memaddr, info); -} - -/* Given a GDB frame, determine the address of the calling function's frame. - This will be used to create a new GDB frame struct, and then - INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. - - For us, the frame address is its stack pointer value, so we look up - the function prologue to determine the caller's sp value, and return it. */ -static CORE_ADDR -sh_frame_chain (struct frame_info *frame) -{ - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - return frame->frame; /* dummy frame same as caller's frame */ - if (frame->pc && !inside_entry_file (frame->pc)) - return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, 4); - else - return 0; -} - -/* Given a register number RN as it appears in an assembly - instruction, find the corresponding register number in the GDB - scheme. */ -static int -translate_insn_rn (int rn, int media_mode) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - /* FIXME: this assumes that the number rn is for a not pseudo - register only. */ - if (media_mode) - return rn; - else - { - /* These registers don't have a corresponding compact one. */ - /* FIXME: This is probably not enough. */ -#if 0 - if ((rn >= 16 && rn <= 63) || (rn >= 93 && rn <= 140)) - return rn; -#endif - if (rn >= 0 && rn <= tdep->R0_C_REGNUM) - return tdep->R0_C_REGNUM + rn; - else - return rn; - } -} - -static CORE_ADDR -sh64_frame_chain (struct frame_info *frame) -{ - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - return frame->frame; /* dummy frame same as caller's frame */ - if (frame->pc && !inside_entry_file (frame->pc)) - { - int media_mode = pc_is_isa32 (frame->pc); - int size; - if (gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32) - size = 4; - else - size = REGISTER_RAW_SIZE (translate_insn_rn (FP_REGNUM, media_mode)); - return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, size); - } - else - return 0; -} - -/* 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. */ -static CORE_ADDR -sh_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)) - /* When the caller requests PR from the dummy frame, we return PC because - that's where the previous routine appears to have done a call from. */ - return generic_read_register_dummy (fi->pc, fi->frame, regnum); - else - { - FRAME_INIT_SAVED_REGS (fi); - if (!fi->pc) - return 0; - if (fi->saved_regs[regnum] != 0) - return read_memory_integer (fi->saved_regs[regnum], - REGISTER_RAW_SIZE (regnum)); - } - return read_register (regnum); -} - -static CORE_ADDR -sh64_get_saved_pr (struct frame_info *fi, int pr_regnum) -{ - int media_mode = 0; - - for (; fi; fi = fi->next) - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - /* When the caller requests PR from the dummy frame, we return PC because - that's where the previous routine appears to have done a call from. */ - return generic_read_register_dummy (fi->pc, fi->frame, pr_regnum); - else - { - FRAME_INIT_SAVED_REGS (fi); - if (!fi->pc) - return 0; - - media_mode = pc_is_isa32 (fi->pc); - - if (fi->saved_regs[pr_regnum] != 0) - { - int gdb_reg_num = translate_insn_rn (pr_regnum, media_mode); - int size = ((gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32) - ? 4 - : REGISTER_RAW_SIZE (gdb_reg_num)); - return read_memory_integer (fi->saved_regs[pr_regnum], size); - } - } - return read_register (pr_regnum); -} - -/* Put here the code to store, into a struct frame_saved_regs, the - addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: the address we - return for it IS the sp for the next frame. */ -static void -sh_nofp_frame_init_saved_regs (struct frame_info *fi) -{ - int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof(int)); - int rn; - int have_fp = 0; - int depth; - int pc; - int opc; - int insn; - int r3_val = 0; - char *dummy_regs = deprecated_generic_find_dummy_frame (fi->pc, fi->frame); - - if (fi->saved_regs == NULL) - frame_saved_regs_zalloc (fi); - else - memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); - - if (dummy_regs) - { - /* DANGER! This is ONLY going to work if the char buffer format of - the saved registers is byte-for-byte identical to the - CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ - memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); - return; - } - - fi->extra_info->leaf_function = 1; - fi->extra_info->f_offset = 0; - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - where[rn] = -1; - - depth = 0; - - /* Loop around examining the prologue insns until we find something - that does not appear to be part of the prologue. But give up - after 20 of them, since we're getting silly then. */ - - pc = get_pc_function_start (fi->pc); - if (!pc) - { - fi->pc = 0; - return; - } - - for (opc = pc + (2 * 28); pc < opc; pc += 2) - { - insn = read_memory_integer (pc, 2); - /* See where the registers will be saved to */ - if (IS_PUSH (insn)) - { - rn = GET_PUSHED_REG (insn); - where[rn] = depth; - depth += 4; - } - else if (IS_STS (insn)) - { - where[gdbarch_tdep (current_gdbarch)->PR_REGNUM] = depth; - /* If we're storing the pr then this isn't a leaf */ - fi->extra_info->leaf_function = 0; - depth += 4; - } - else if (IS_MOV_R3 (insn)) - { - r3_val = ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_SHLL_R3 (insn)) - { - r3_val <<= 1; - } - else if (IS_ADD_R3SP (insn)) - { - depth += -r3_val; - } - else if (IS_ADD_SP (insn)) - { - depth -= ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_MOV_SP_FP (insn)) - break; -#if 0 /* This used to just stop when it found an instruction that - was not considered part of the prologue. Now, we just - keep going looking for likely instructions. */ - else - break; -#endif - } - - /* Now we know how deep things are, we can work out their addresses */ - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - { - if (where[rn] >= 0) - { - if (rn == FP_REGNUM) - have_fp = 1; - - fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; - } - else - { - fi->saved_regs[rn] = 0; - } - } - - if (have_fp) - { - fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); - } - else - { - fi->saved_regs[SP_REGNUM] = fi->frame - 4; - } - - fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; - /* Work out the return pc - either from the saved pr or the pr - value */ -} - -/* For vectors of 4 floating point registers. */ -static int -fv_reg_base_num (int fv_regnum) -{ - int fp_regnum; - - fp_regnum = FP0_REGNUM + - (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4; - return fp_regnum; -} - -/* For double precision floating point registers, i.e 2 fp regs.*/ -static int -dr_reg_base_num (int dr_regnum) -{ - int fp_regnum; - - fp_regnum = FP0_REGNUM + - (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2; - return fp_regnum; -} - -/* For pairs of floating point registers */ -static int -fpp_reg_base_num (int fpp_regnum) -{ - int fp_regnum; - - fp_regnum = FP0_REGNUM + - (fpp_regnum - gdbarch_tdep (current_gdbarch)->FPP0_REGNUM) * 2; - return fp_regnum; -} - -static int -is_media_pseudo (int rn) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - return (rn >= tdep->DR0_REGNUM - && rn <= tdep->FV_LAST_REGNUM); -} - -int -sh64_get_gdb_regnum (int gcc_regnum, CORE_ADDR pc) -{ - return translate_insn_rn (gcc_regnum, pc_is_isa32 (pc)); -} - -static int -sh64_media_reg_base_num (int reg_nr) -{ - int base_regnum = -1; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - base_regnum = dr_reg_base_num (reg_nr); - - else if (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - base_regnum = fpp_reg_base_num (reg_nr); - - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - base_regnum = fv_reg_base_num (reg_nr); - - return base_regnum; -} - -/* *INDENT-OFF* */ -/* - SH COMPACT MODE (ISA 16) (all pseudo) 221-272 - GDB_REGNUM BASE_REGNUM - r0_c 221 0 - r1_c 222 1 - r2_c 223 2 - r3_c 224 3 - r4_c 225 4 - r5_c 226 5 - r6_c 227 6 - r7_c 228 7 - r8_c 229 8 - r9_c 230 9 - r10_c 231 10 - r11_c 232 11 - r12_c 233 12 - r13_c 234 13 - r14_c 235 14 - r15_c 236 15 - - pc_c 237 64 - gbr_c 238 16 - mach_c 239 17 - macl_c 240 17 - pr_c 241 18 - t_c 242 19 - fpscr_c 243 76 - fpul_c 244 109 - - fr0_c 245 77 - fr1_c 246 78 - fr2_c 247 79 - fr3_c 248 80 - fr4_c 249 81 - fr5_c 250 82 - fr6_c 251 83 - fr7_c 252 84 - fr8_c 253 85 - fr9_c 254 86 - fr10_c 255 87 - fr11_c 256 88 - fr12_c 257 89 - fr13_c 258 90 - fr14_c 259 91 - fr15_c 260 92 - - dr0_c 261 77 - dr2_c 262 79 - dr4_c 263 81 - dr6_c 264 83 - dr8_c 265 85 - dr10_c 266 87 - dr12_c 267 89 - dr14_c 268 91 - - fv0_c 269 77 - fv4_c 270 81 - fv8_c 271 85 - fv12_c 272 91 -*/ -/* *INDENT-ON* */ -static int -sh64_compact_reg_base_num (int reg_nr) -{ - int base_regnum = -1; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - /* general register N maps to general register N */ - if (reg_nr >= tdep->R0_C_REGNUM - && reg_nr <= tdep->R_LAST_C_REGNUM) - base_regnum = reg_nr - tdep->R0_C_REGNUM; - - /* floating point register N maps to floating point register N */ - else if (reg_nr >= tdep->FP0_C_REGNUM - && reg_nr <= tdep->FP_LAST_C_REGNUM) - base_regnum = reg_nr - tdep->FP0_C_REGNUM + FP0_REGNUM; - - /* double prec register N maps to base regnum for double prec register N */ - else if (reg_nr >= tdep->DR0_C_REGNUM - && reg_nr <= tdep->DR_LAST_C_REGNUM) - base_regnum = dr_reg_base_num (tdep->DR0_REGNUM - + reg_nr - tdep->DR0_C_REGNUM); - - /* vector N maps to base regnum for vector register N */ - else if (reg_nr >= tdep->FV0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM) - base_regnum = fv_reg_base_num (tdep->FV0_REGNUM - + reg_nr - tdep->FV0_C_REGNUM); - - else if (reg_nr == tdep->PC_C_REGNUM) - base_regnum = PC_REGNUM; - - else if (reg_nr == tdep->GBR_C_REGNUM) - base_regnum = 16; - - else if (reg_nr == tdep->MACH_C_REGNUM - || reg_nr == tdep->MACL_C_REGNUM) - base_regnum = 17; - - else if (reg_nr == tdep->PR_C_REGNUM) - base_regnum = 18; - - else if (reg_nr == tdep->T_C_REGNUM) - base_regnum = 19; - - else if (reg_nr == tdep->FPSCR_C_REGNUM) - base_regnum = tdep->FPSCR_REGNUM; /*???? this register is a mess. */ - - else if (reg_nr == tdep->FPUL_C_REGNUM) - base_regnum = FP0_REGNUM + 32; - - return base_regnum; -} - -/* Given a register number RN (according to the gdb scheme) , return - its corresponding architectural register. In media mode, only a - subset of the registers is pseudo registers. For compact mode, all - the registers are pseudo. */ -static int -translate_rn_to_arch_reg_num (int rn, int media_mode) -{ - - if (media_mode) - { - if (!is_media_pseudo (rn)) - return rn; - else - return sh64_media_reg_base_num (rn); - } - else - /* All compact registers are pseudo. */ - return sh64_compact_reg_base_num (rn); -} - -static int -sign_extend (int value, int bits) -{ - value = value & ((1 << bits) - 1); - return (value & (1 << (bits - 1)) - ? value | (~((1 << bits) - 1)) - : value); -} - -static void -sh64_nofp_frame_init_saved_regs (struct frame_info *fi) -{ - int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int)); - int rn; - int have_fp = 0; - int fp_regnum; - int sp_regnum; - int depth; - int pc; - int opc; - int insn; - int r0_val = 0; - int media_mode = 0; - int insn_size; - int gdb_register_number; - int register_number; - char *dummy_regs = deprecated_generic_find_dummy_frame (fi->pc, fi->frame); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (fi->saved_regs == NULL) - frame_saved_regs_zalloc (fi); - else - memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); - - if (dummy_regs) - { - /* DANGER! This is ONLY going to work if the char buffer format of - the saved registers is byte-for-byte identical to the - CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ - memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); - return; - } - - fi->extra_info->leaf_function = 1; - fi->extra_info->f_offset = 0; - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - where[rn] = -1; - - depth = 0; - - /* Loop around examining the prologue insns until we find something - that does not appear to be part of the prologue. But give up - after 20 of them, since we're getting silly then. */ - - pc = get_pc_function_start (fi->pc); - if (!pc) - { - fi->pc = 0; - return; - } - - if (pc_is_isa32 (pc)) - { - media_mode = 1; - insn_size = 4; - } - else - { - media_mode = 0; - insn_size = 2; - } - - /* The frame pointer register is general register 14 in shmedia and - shcompact modes. In sh compact it is a pseudo register. Same goes - for the stack pointer register, which is register 15. */ - fp_regnum = translate_insn_rn (FP_REGNUM, media_mode); - sp_regnum = translate_insn_rn (SP_REGNUM, media_mode); - - for (opc = pc + (insn_size * 28); pc < opc; pc += insn_size) - { - insn = read_memory_integer (media_mode ? UNMAKE_ISA32_ADDR (pc) : pc, - insn_size); - - if (media_mode == 0) - { - if (IS_STS_PR (insn)) - { - int next_insn = read_memory_integer (pc + insn_size, insn_size); - if (IS_MOV_TO_R15 (next_insn)) - { - int reg_nr = tdep->PR_C_REGNUM; - - where[reg_nr] = depth - ((((next_insn & 0xf) ^ 0x8) - 0x8) << 2); - fi->extra_info->leaf_function = 0; - pc += insn_size; - } - } - else if (IS_MOV_R14 (insn)) - { - where[fp_regnum] = depth - ((((insn & 0xf) ^ 0x8) - 0x8) << 2); - } - - else if (IS_MOV_R0 (insn)) - { - /* Put in R0 the offset from SP at which to store some - registers. We are interested in this value, because it - will tell us where the given registers are stored within - the frame. */ - r0_val = ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_ADD_SP_R0 (insn)) - { - /* This instruction still prepares r0, but we don't care. - We already have the offset in r0_val. */ - } - else if (IS_STS_R0 (insn)) - { - /* Store PR at r0_val-4 from SP. Decrement r0 by 4*/ - int reg_nr = tdep->PR_C_REGNUM; - where[reg_nr] = depth - (r0_val - 4); - r0_val -= 4; - fi->extra_info->leaf_function = 0; - } - else if (IS_MOV_R14_R0 (insn)) - { - /* Store R14 at r0_val-4 from SP. Decrement r0 by 4 */ - where[fp_regnum] = depth - (r0_val - 4); - r0_val -= 4; - } - - else if (IS_ADD_SP (insn)) - { - depth -= ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_MOV_SP_FP (insn)) - break; - } - else - { - if (IS_ADDIL_SP_MEDIA (insn) - || IS_ADDI_SP_MEDIA (insn)) - { - depth -= sign_extend ((((insn & 0xffc00) ^ 0x80000) - 0x80000) >> 10, 9); - } - - else if (IS_STQ_R18_R15 (insn)) - { - where[tdep->PR_REGNUM] = - depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3); - fi->extra_info->leaf_function = 0; - } - - else if (IS_STL_R18_R15 (insn)) - { - where[tdep->PR_REGNUM] = - depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2); - fi->extra_info->leaf_function = 0; - } - - else if (IS_STQ_R14_R15 (insn)) - { - where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3); - } - - else if (IS_STL_R14_R15 (insn)) - { - where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2); - } - - else if (IS_MOV_SP_FP_MEDIA (insn)) - break; - } - } - - /* Now we know how deep things are, we can work out their addresses. */ - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - { - register_number = translate_rn_to_arch_reg_num (rn, media_mode); - - if (where[rn] >= 0) - { - if (rn == fp_regnum) - have_fp = 1; - - /* Watch out! saved_regs is only for the real registers, and - doesn't include space for the pseudo registers. */ - fi->saved_regs[register_number]= fi->frame - where[rn] + depth; - - } - else - fi->saved_regs[register_number] = 0; - } - - if (have_fp) - { - /* SP_REGNUM is 15. For shmedia 15 is the real register. For - shcompact 15 is the arch register corresponding to the pseudo - register r15 which still is the SP register. */ - /* The place on the stack where fp is stored contains the sp of - the caller. */ - /* Again, saved_registers contains only space for the real registers, - so we store in FP_REGNUM position. */ - int size; - if (tdep->sh_abi == SH_ABI_32) - size = 4; - else - size = REGISTER_RAW_SIZE (fp_regnum); - fi->saved_regs[sp_regnum] = read_memory_integer (fi->saved_regs[fp_regnum], size); - } - else - fi->saved_regs[sp_regnum] = fi->frame; - - fi->extra_info->f_offset = depth - where[fp_regnum]; -} - -static void -sh_fp_frame_init_saved_regs (struct frame_info *fi) -{ - int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int)); - int rn; - int have_fp = 0; - int depth; - int pc; - int opc; - int insn; - int r3_val = 0; - char *dummy_regs = deprecated_generic_find_dummy_frame (fi->pc, fi->frame); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (fi->saved_regs == NULL) - frame_saved_regs_zalloc (fi); - else - memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); - - if (dummy_regs) - { - /* DANGER! This is ONLY going to work if the char buffer format of - the saved registers is byte-for-byte identical to the - CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ - memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); - return; - } - - fi->extra_info->leaf_function = 1; - fi->extra_info->f_offset = 0; - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - where[rn] = -1; - - depth = 0; - - /* Loop around examining the prologue insns until we find something - that does not appear to be part of the prologue. But give up - after 20 of them, since we're getting silly then. */ - - pc = get_pc_function_start (fi->pc); - if (!pc) - { - fi->pc = 0; - return; - } - - for (opc = pc + (2 * 28); pc < opc; pc += 2) - { - insn = read_memory_integer (pc, 2); - /* See where the registers will be saved to */ - if (IS_PUSH (insn)) - { - rn = GET_PUSHED_REG (insn); - where[rn] = depth; - depth += 4; - } - else if (IS_STS (insn)) - { - where[tdep->PR_REGNUM] = depth; - /* If we're storing the pr then this isn't a leaf */ - fi->extra_info->leaf_function = 0; - depth += 4; - } - else if (IS_MOV_R3 (insn)) - { - r3_val = ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_SHLL_R3 (insn)) - { - r3_val <<= 1; - } - else if (IS_ADD_R3SP (insn)) - { - depth += -r3_val; - } - else if (IS_ADD_SP (insn)) - { - depth -= ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_FMOV (insn)) - { - if (read_register (tdep->FPSCR_REGNUM) & FPSCR_SZ) - { - depth += 8; - } - else - { - depth += 4; - } - } - else if (IS_MOV_SP_FP (insn)) - break; -#if 0 /* This used to just stop when it found an instruction that - was not considered part of the prologue. Now, we just - keep going looking for likely instructions. */ - else - break; -#endif - } - - /* Now we know how deep things are, we can work out their addresses */ - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - { - if (where[rn] >= 0) - { - if (rn == FP_REGNUM) - have_fp = 1; - - fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; - } - else - { - fi->saved_regs[rn] = 0; - } - } - - if (have_fp) - { - fi->saved_regs[SP_REGNUM] = - read_memory_integer (fi->saved_regs[FP_REGNUM], 4); - } - else - { - fi->saved_regs[SP_REGNUM] = fi->frame - 4; - } - - fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; - /* Work out the return pc - either from the saved pr or the pr - value */ -} - -/* Initialize the extra info saved in a FRAME */ -static void -sh_init_extra_frame_info (int fromleaf, struct frame_info *fi) -{ - - fi->extra_info = (struct frame_extra_info *) - frame_obstack_alloc (sizeof (struct frame_extra_info)); - - if (fi->next) - fi->pc = FRAME_SAVED_PC (fi->next); - - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - { - /* We need to setup fi->frame here because run_stack_dummy gets it wrong - by assuming it's always FP. */ - fi->frame = generic_read_register_dummy (fi->pc, fi->frame, - SP_REGNUM); - fi->extra_info->return_pc = generic_read_register_dummy (fi->pc, - fi->frame, - PC_REGNUM); - fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4); - fi->extra_info->leaf_function = 0; - return; - } - else - { - FRAME_INIT_SAVED_REGS (fi); - fi->extra_info->return_pc = - sh_find_callers_reg (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM); - } -} - -static void -sh64_init_extra_frame_info (int fromleaf, struct frame_info *fi) -{ - int media_mode = pc_is_isa32 (fi->pc); - - fi->extra_info = (struct frame_extra_info *) - frame_obstack_alloc (sizeof (struct frame_extra_info)); - - if (fi->next) - fi->pc = FRAME_SAVED_PC (fi->next); - - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - { - /* We need to setup fi->frame here because run_stack_dummy gets it wrong - by assuming it's always FP. */ - fi->frame = generic_read_register_dummy (fi->pc, fi->frame, - SP_REGNUM); - fi->extra_info->return_pc = - generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); - fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4); - fi->extra_info->leaf_function = 0; - return; - } - else - { - FRAME_INIT_SAVED_REGS (fi); - fi->extra_info->return_pc = - sh64_get_saved_pr (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM); - } -} - -void -sh64_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp, - struct frame_info *frame, int regnum, - enum lval_type *lval) -{ - int media_mode; - int live_regnum = regnum; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (!target_has_registers) - error ("No registers."); - - /* Normal systems don't optimize out things with register numbers. */ - if (optimized != NULL) - *optimized = 0; - - if (addrp) /* default assumption: not found in memory */ - *addrp = 0; - - if (raw_buffer) - memset (raw_buffer, 0, sizeof (raw_buffer)); - - /* We must do this here, before the following while loop changes - frame, and makes it NULL. If this is a media register number, - but we are in compact mode, it will become the corresponding - compact pseudo register. If there is no corresponding compact - pseudo-register what do we do?*/ - media_mode = pc_is_isa32 (frame->pc); - live_regnum = translate_insn_rn (regnum, media_mode); - - /* Note: since the current frame's registers could only have been - saved by frames INTERIOR TO the current frame, we skip examining - the current frame itself: otherwise, we would be getting the - previous frame's registers which were saved by the current frame. */ - - while (frame && ((frame = frame->next) != NULL)) - { - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - { - if (lval) /* found it in a CALL_DUMMY frame */ - *lval = not_lval; - if (raw_buffer) - memcpy (raw_buffer, - (deprecated_generic_find_dummy_frame (frame->pc, frame->frame) - + REGISTER_BYTE (regnum)), - REGISTER_RAW_SIZE (regnum)); - return; - } - - FRAME_INIT_SAVED_REGS (frame); - if (frame->saved_regs != NULL - && frame->saved_regs[regnum] != 0) - { - if (lval) /* found it saved on the stack */ - *lval = lval_memory; - if (regnum == SP_REGNUM) - { - if (raw_buffer) /* SP register treated specially */ - store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), - frame->saved_regs[regnum]); - } - else - { /* any other register */ - - if (addrp) - *addrp = frame->saved_regs[regnum]; - if (raw_buffer) - { - int size; - if (tdep->sh_abi == SH_ABI_32 - && (live_regnum == FP_REGNUM - || live_regnum == tdep->PR_REGNUM)) - size = 4; - else - size = REGISTER_RAW_SIZE (live_regnum); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - read_memory (frame->saved_regs[regnum], raw_buffer, size); - else - read_memory (frame->saved_regs[regnum], - raw_buffer - + REGISTER_RAW_SIZE (live_regnum) - - size, - size); - } - } - return; - } - } - - /* If we get thru the loop to this point, it means the register was - not saved in any frame. Return the actual live-register value. */ - - if (lval) /* found it in a live register */ - *lval = lval_register; - if (addrp) - *addrp = REGISTER_BYTE (live_regnum); - if (raw_buffer) - read_register_gen (live_regnum, raw_buffer); -} - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ -static CORE_ADDR -sh_extract_struct_value_address (char *regbuf) -{ - return (extract_address ((regbuf), REGISTER_RAW_SIZE (0))); -} - -static CORE_ADDR -sh64_extract_struct_value_address (char *regbuf) -{ - return (extract_address ((regbuf + REGISTER_BYTE (STRUCT_RETURN_REGNUM)), - REGISTER_RAW_SIZE (STRUCT_RETURN_REGNUM))); -} - -static CORE_ADDR -sh_frame_saved_pc (struct frame_info *frame) -{ - return ((frame)->extra_info->return_pc); -} - -/* Discard from the stack the innermost frame, - restoring all saved registers. */ -static void -sh_pop_frame (void) -{ - register struct frame_info *frame = get_current_frame (); - register CORE_ADDR fp; - register int regnum; - - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - generic_pop_dummy_frame (); - else - { - fp = FRAME_FP (frame); - FRAME_INIT_SAVED_REGS (frame); - - /* Copy regs from where they were saved in the frame */ - for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) - if (frame->saved_regs[regnum]) - write_register (regnum, - read_memory_integer (frame->saved_regs[regnum], 4)); - - write_register (PC_REGNUM, frame->extra_info->return_pc); - write_register (SP_REGNUM, fp + 4); - } - flush_cached_frames (); -} - -/* Used in the 'return' command. */ -static void -sh64_pop_frame (void) -{ - register struct frame_info *frame = get_current_frame (); - register CORE_ADDR fp; - register int regnum; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - int media_mode = pc_is_isa32 (frame->pc); - - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - generic_pop_dummy_frame (); - else - { - fp = FRAME_FP (frame); - FRAME_INIT_SAVED_REGS (frame); - - /* Copy regs from where they were saved in the frame */ - for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) - if (frame->saved_regs[regnum]) - { - int size; - if (tdep->sh_abi == SH_ABI_32 - && (regnum == FP_REGNUM - || regnum == tdep->PR_REGNUM)) - size = 4; - else - size = REGISTER_RAW_SIZE (translate_insn_rn (regnum, - media_mode)); - write_register (regnum, - read_memory_integer (frame->saved_regs[regnum], - size)); - } - - write_register (PC_REGNUM, frame->extra_info->return_pc); - write_register (SP_REGNUM, fp + 8); - } - flush_cached_frames (); -} - -/* Function: push_arguments - Setup the function arguments for calling a function in the inferior. - - On the Hitachi SH architecture, there are four registers (R4 to R7) - which are dedicated for passing function arguments. Up to the first - four arguments (depending on size) may go into these registers. - The rest go on the stack. - - Arguments that are smaller than 4 bytes will still take up a whole - register or a whole 32-bit word on the stack, and will be - right-justified in the register or the stack word. This includes - chars, shorts, and small aggregate types. - - Arguments that are larger than 4 bytes may be split between two or - more registers. If there are not enough registers free, an argument - may be passed partly in a register (or registers), and partly on the - stack. This includes doubles, long longs, and larger aggregates. - As far as I know, there is no upper limit to the size of aggregates - that will be passed in this way; in other words, the convention of - passing a pointer to a large aggregate instead of a copy is not used. - - An exceptional case exists for struct arguments (and possibly other - aggregates such as arrays) if the size is larger than 4 bytes but - not a multiple of 4 bytes. In this case the argument is never split - between the registers and the stack, but instead is copied in its - entirety onto the stack, AND also copied into as many registers as - there is room for. In other words, space in registers permitting, - two copies of the same argument are passed in. As far as I can tell, - only the one on the stack is used, although that may be a function - of the level of compiler optimization. I suspect this is a compiler - bug. Arguments of these odd sizes are left-justified within the - word (as opposed to arguments smaller than 4 bytes, which are - right-justified). - - If the function is to return an aggregate type such as a struct, it - is either returned in the normal return value register R0 (if its - size is no greater than one byte), or else the caller must allocate - space into which the callee will copy the return value (if the size - is greater than one byte). In this case, a pointer to the return - value location is passed into the callee in register R2, which does - not displace any of the other arguments passed in via registers R4 - to R7. */ - -static CORE_ADDR -sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) -{ - int stack_offset, stack_alloc; - int argreg; - int argnum; - struct type *type; - CORE_ADDR regval; - char *val; - char valbuf[4]; - int len; - int odd_sized_struct; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - /* first force sp to a 4-byte alignment */ - sp = sp & ~3; - - /* The "struct return pointer" pseudo-argument has its own dedicated - register */ - if (struct_return) - write_register (STRUCT_RETURN_REGNUM, struct_addr); - - /* Now make sure there's space on the stack */ - for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) - stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); - sp -= stack_alloc; /* make room on stack for args */ - - /* Now load as many as possible of the first arguments into - registers, and push the rest onto the stack. There are 16 bytes - in four registers available. Loop thru args from first to last. */ - - argreg = tdep->ARG0_REGNUM; - for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) - { - type = VALUE_TYPE (args[argnum]); - len = TYPE_LENGTH (type); - memset (valbuf, 0, sizeof (valbuf)); - if (len < 4) - { - /* value gets right-justified in the register or stack word */ - memcpy (valbuf + (4 - len), - (char *) VALUE_CONTENTS (args[argnum]), len); - val = valbuf; - } - else - val = (char *) VALUE_CONTENTS (args[argnum]); - - if (len > 4 && (len & 3) != 0) - odd_sized_struct = 1; /* such structs go entirely on stack */ - else - odd_sized_struct = 0; - while (len > 0) - { - if (argreg > tdep->ARGLAST_REGNUM - || odd_sized_struct) - { - /* must go on the stack */ - write_memory (sp + stack_offset, val, 4); - stack_offset += 4; - } - /* NOTE WELL!!!!! This is not an "else if" clause!!! - That's because some *&^%$ things get passed on the stack - AND in the registers! */ - if (argreg <= tdep->ARGLAST_REGNUM) - { - /* there's room in a register */ - regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); - write_register (argreg++, regval); - } - /* Store the value 4 bytes at a time. This means that things - larger than 4 bytes may go partly in registers and partly - on the stack. */ - len -= REGISTER_RAW_SIZE (argreg); - val += REGISTER_RAW_SIZE (argreg); - } - } - return sp; -} - -/* R2-R9 for integer types and integer equivalent (char, pointers) and - non-scalar (struct, union) elements (even if the elements are - floats). - FR0-FR11 for single precision floating point (float) - DR0-DR10 for double precision floating point (double) - - If a float is argument number 3 (for instance) and arguments number - 1,2, and 4 are integer, the mapping will be: - arg1 -->R2, arg2 --> R3, arg3 -->FR0, arg4 --> R5. I.e. R4 is not used. - - If a float is argument number 10 (for instance) and arguments number - 1 through 10 are integer, the mapping will be: - arg1->R2, arg2->R3, arg3->R4, arg4->R5, arg5->R6, arg6->R7, arg7->R8, - arg8->R9, arg9->(0,SP)stack(8-byte aligned), arg10->FR0, arg11->stack(16,SP). - I.e. there is hole in the stack. - - Different rules apply for variable arguments functions, and for functions - for which the prototype is not known. */ - -static CORE_ADDR -sh64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) -{ - int stack_offset, stack_alloc; - int int_argreg; - int float_argreg; - int double_argreg; - int float_arg_index = 0; - int double_arg_index = 0; - int argnum; - struct type *type; - CORE_ADDR regval; - char *val; - char valbuf[8]; - char valbuf_tmp[8]; - int len; - int argreg_size; - int fp_args[12]; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - memset (fp_args, 0, sizeof (fp_args)); - - /* first force sp to a 8-byte alignment */ - sp = sp & ~7; - - /* The "struct return pointer" pseudo-argument has its own dedicated - register */ - - if (struct_return) - write_register (STRUCT_RETURN_REGNUM, struct_addr); - - /* Now make sure there's space on the stack */ - for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) - stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 7) & ~7); - sp -= stack_alloc; /* make room on stack for args */ - - /* Now load as many as possible of the first arguments into - registers, and push the rest onto the stack. There are 64 bytes - in eight registers available. Loop thru args from first to last. */ - - int_argreg = tdep->ARG0_REGNUM; - float_argreg = FP0_REGNUM; - double_argreg = tdep->DR0_REGNUM; - - for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) - { - type = VALUE_TYPE (args[argnum]); - len = TYPE_LENGTH (type); - memset (valbuf, 0, sizeof (valbuf)); - - if (TYPE_CODE (type) != TYPE_CODE_FLT) - { - argreg_size = REGISTER_RAW_SIZE (int_argreg); - - if (len < argreg_size) - { - /* value gets right-justified in the register or stack word */ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - memcpy (valbuf + argreg_size - len, - (char *) VALUE_CONTENTS (args[argnum]), len); - else - memcpy (valbuf, (char *) VALUE_CONTENTS (args[argnum]), len); - - val = valbuf; - } - else - val = (char *) VALUE_CONTENTS (args[argnum]); - - while (len > 0) - { - if (int_argreg > tdep->ARGLAST_REGNUM) - { - /* must go on the stack */ - write_memory (sp + stack_offset, val, argreg_size); - stack_offset += 8;/*argreg_size;*/ - } - /* NOTE WELL!!!!! This is not an "else if" clause!!! - That's because some *&^%$ things get passed on the stack - AND in the registers! */ - if (int_argreg <= tdep->ARGLAST_REGNUM) - { - /* there's room in a register */ - regval = extract_address (val, argreg_size); - write_register (int_argreg, regval); - } - /* Store the value 8 bytes at a time. This means that - things larger than 8 bytes may go partly in registers - and partly on the stack. FIXME: argreg is incremented - before we use its size. */ - len -= argreg_size; - val += argreg_size; - int_argreg++; - } - } - else - { - val = (char *) VALUE_CONTENTS (args[argnum]); - if (len == 4) - { - /* Where is it going to be stored? */ - while (fp_args[float_arg_index]) - float_arg_index ++; - - /* Now float_argreg points to the register where it - should be stored. Are we still within the allowed - register set? */ - if (float_arg_index <= tdep->FLOAT_ARGLAST_REGNUM) - { - /* Goes in FR0...FR11 */ - write_register_gen (FP0_REGNUM + float_arg_index, val); - fp_args[float_arg_index] = 1; - /* Skip the corresponding general argument register. */ - int_argreg ++; - } - else - ; - /* Store it as the integers, 8 bytes at the time, if - necessary spilling on the stack. */ - - } - else if (len == 8) - { - /* Where is it going to be stored? */ - while (fp_args[double_arg_index]) - double_arg_index += 2; - /* Now double_argreg points to the register - where it should be stored. - Are we still within the allowed register set? */ - if (double_arg_index < tdep->FLOAT_ARGLAST_REGNUM) - { - /* Goes in DR0...DR10 */ - /* The numbering of the DRi registers is consecutive, - i.e. includes odd numbers. */ - int double_register_offset = double_arg_index / 2; - int regnum = tdep->DR0_REGNUM + - double_register_offset; -#if 0 - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - { - memset (valbuf_tmp, 0, sizeof (valbuf_tmp)); - REGISTER_CONVERT_TO_VIRTUAL (regnum, - type, val, valbuf_tmp); - val = valbuf_tmp; - } -#endif - /* Note: must use write_register_gen here instead - of regcache_raw_write, because - regcache_raw_write works only for real - registers, not pseudo. write_register_gen will - call the gdbarch function to do register - writes, and that will properly know how to deal - with pseudoregs. */ - write_register_gen (regnum, val); - fp_args[double_arg_index] = 1; - fp_args[double_arg_index + 1] = 1; - /* Skip the corresponding general argument register. */ - int_argreg ++; - } - else - ; - /* Store it as the integers, 8 bytes at the time, if - necessary spilling on the stack. */ - } - } - } - return sp; -} - -/* Function: push_return_address (pc) - Set up the return address for the inferior function call. - Needed for targets where we don't actually execute a JSR/BSR instruction */ - -static CORE_ADDR -sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - write_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM, - CALL_DUMMY_ADDRESS ()); - return sp; -} - -/* Function: fix_call_dummy - Poke the callee function's address into the destination part of - the CALL_DUMMY. The address is actually stored in a data word - following the actualy CALL_DUMMY instructions, which will load - it into a register using PC-relative addressing. This function - expects the CALL_DUMMY to look like this: - - mov.w @(2,PC), R8 - jsr @R8 - nop - trap - <destination> - */ - -#if 0 -void -sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, - struct value **args, struct type *type, int gcc_p) -{ - *(unsigned long *) (dummy + 8) = fun; -} -#endif - -static int -sh_coerce_float_to_double (struct type *formal, struct type *actual) -{ - return 1; -} - -/* Find a function's return value in the appropriate registers (in - regbuf), and copy it into valbuf. Extract from an array REGBUF - containing the (raw) register state a function return value of type - TYPE, and copy that, in virtual format, into VALBUF. */ -static void -sh_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - int len = TYPE_LENGTH (type); - int return_register = R0_REGNUM; - int offset; - - if (len <= 4) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 4 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else if (len <= 8) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 8 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else - error ("bad size for return value"); -} - -static void -sh3e_sh4_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - int return_register; - int offset; - int len = TYPE_LENGTH (type); - - if (TYPE_CODE (type) == TYPE_CODE_FLT) - return_register = FP0_REGNUM; - else - return_register = R0_REGNUM; - - if (len == 8 && TYPE_CODE (type) == TYPE_CODE_FLT) - { - DOUBLEST val; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, - (char *) regbuf + REGISTER_BYTE (return_register), - &val); - else - floatformat_to_doublest (&floatformat_ieee_double_big, - (char *) regbuf + REGISTER_BYTE (return_register), - &val); - store_floating (valbuf, len, val); - } - else if (len <= 4) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 4 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else if (len <= 8) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 8 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else - error ("bad size for return value"); -} - -static void -sh64_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - int offset; - int return_register; - int len = TYPE_LENGTH (type); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (TYPE_CODE (type) == TYPE_CODE_FLT) - { - if (len == 4) - { - /* Return value stored in FP0_REGNUM */ - return_register = FP0_REGNUM; - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, (char *) regbuf + offset, len); - } - else if (len == 8) - { - /* return value stored in DR0_REGNUM */ - DOUBLEST val; - - return_register = tdep->DR0_REGNUM; - offset = REGISTER_BYTE (return_register); - - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, - (char *) regbuf + offset, &val); - else - floatformat_to_doublest (&floatformat_ieee_double_big, - (char *) regbuf + offset, &val); - store_floating (valbuf, len, val); - } - } - else - { - if (len <= 8) - { - /* Result is in register 2. If smaller than 8 bytes, it is padded - at the most significant end. */ - return_register = tdep->RETURN_REGNUM; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + - REGISTER_RAW_SIZE (return_register) - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, (char *) regbuf + offset, len); - } - else - error ("bad size for return value"); - } -} - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. - If the architecture is sh4 or sh3e, store a function's return value - in the R0 general register or in the FP0 floating point register, - depending on the type of the return value. In all the other cases - the result is stored in r0, left-justified. */ -static void -sh_default_store_return_value (struct type *type, char *valbuf) -{ - char buf[32]; /* more than enough... */ - - if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (R0_REGNUM)) - { - /* Add leading zeros to the value. */ - memset (buf, 0, REGISTER_RAW_SIZE (R0_REGNUM)); - memcpy (buf + REGISTER_RAW_SIZE (R0_REGNUM) - TYPE_LENGTH (type), - valbuf, TYPE_LENGTH (type)); - write_register_bytes (REGISTER_BYTE (R0_REGNUM), buf, - REGISTER_RAW_SIZE (R0_REGNUM)); - } - else - write_register_bytes (REGISTER_BYTE (R0_REGNUM), valbuf, - TYPE_LENGTH (type)); -} - -static void -sh3e_sh4_store_return_value (struct type *type, char *valbuf) -{ - if (TYPE_CODE (type) == TYPE_CODE_FLT) - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), - valbuf, TYPE_LENGTH (type)); - else - sh_default_store_return_value (type, valbuf); -} - -static void -sh64_store_return_value (struct type *type, char *valbuf) -{ - char buf[64]; /* more than enough... */ - int len = TYPE_LENGTH (type); - - if (TYPE_CODE (type) == TYPE_CODE_FLT) - { - if (len == 4) - { - /* Return value stored in FP0_REGNUM */ - write_register_gen (FP0_REGNUM, valbuf); - } - if (len == 8) - { - /* return value stored in DR0_REGNUM */ - /* FIXME: Implement */ - } - } - else - { - int return_register = gdbarch_tdep (current_gdbarch)->RETURN_REGNUM; - int offset = 0; - - if (len <= REGISTER_RAW_SIZE (return_register)) - { - /* Pad with zeros. */ - memset (buf, 0, REGISTER_RAW_SIZE (return_register)); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - offset = 0; /*REGISTER_RAW_SIZE (return_register) - len;*/ - else - offset = REGISTER_RAW_SIZE (return_register) - len; - - memcpy (buf + offset, valbuf, len); - write_register_gen (return_register, buf); - } - else - write_register_gen (return_register, valbuf); - } -} - -/* Print the registers in a form similar to the E7000 */ - -static void -sh_generic_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); -} - -static void -sh3_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); -} - - -static void -sh3e_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - printf_filtered (" FPUL=%08lx FPSCR=%08lx", - (long) read_register (tdep->FPUL_REGNUM), - (long) read_register (tdep->FPSCR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 0), - (long) read_register (FP0_REGNUM + 1), - (long) read_register (FP0_REGNUM + 2), - (long) read_register (FP0_REGNUM + 3), - (long) read_register (FP0_REGNUM + 4), - (long) read_register (FP0_REGNUM + 5), - (long) read_register (FP0_REGNUM + 6), - (long) read_register (FP0_REGNUM + 7)); - printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 8), - (long) read_register (FP0_REGNUM + 9), - (long) read_register (FP0_REGNUM + 10), - (long) read_register (FP0_REGNUM + 11), - (long) read_register (FP0_REGNUM + 12), - (long) read_register (FP0_REGNUM + 13), - (long) read_register (FP0_REGNUM + 14), - (long) read_register (FP0_REGNUM + 15)); -} - -static void -sh3_dsp_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - - printf_filtered (" DSR=%08lx", - (long) read_register (tdep->DSR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", - (long) read_register (tdep->A0G_REGNUM) & 0xff, - (long) read_register (tdep->A0_REGNUM), - (long) read_register (tdep->M0_REGNUM), - (long) read_register (tdep->X0_REGNUM), - (long) read_register (tdep->Y0_REGNUM), - (long) read_register (tdep->RS_REGNUM), - (long) read_register (tdep->MOD_REGNUM)); - printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", - (long) read_register (tdep->A1G_REGNUM) & 0xff, - (long) read_register (tdep->A1_REGNUM), - (long) read_register (tdep->M1_REGNUM), - (long) read_register (tdep->X1_REGNUM), - (long) read_register (tdep->Y1_REGNUM), - (long) read_register (tdep->RE_REGNUM)); -} - -static void -sh4_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - int pr = read_register (tdep->FPSCR_REGNUM) & 0x80000; - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - printf_filtered (" FPUL=%08lx FPSCR=%08lx", - (long) read_register (tdep->FPUL_REGNUM), - (long) read_register (tdep->FPSCR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ((pr - ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" - : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 0), - (long) read_register (FP0_REGNUM + 1), - (long) read_register (FP0_REGNUM + 2), - (long) read_register (FP0_REGNUM + 3), - (long) read_register (FP0_REGNUM + 4), - (long) read_register (FP0_REGNUM + 5), - (long) read_register (FP0_REGNUM + 6), - (long) read_register (FP0_REGNUM + 7)); - printf_filtered ((pr - ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" - : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 8), - (long) read_register (FP0_REGNUM + 9), - (long) read_register (FP0_REGNUM + 10), - (long) read_register (FP0_REGNUM + 11), - (long) read_register (FP0_REGNUM + 12), - (long) read_register (FP0_REGNUM + 13), - (long) read_register (FP0_REGNUM + 14), - (long) read_register (FP0_REGNUM + 15)); -} - -static void -sh_dsp_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered (" DSR=%08lx", - (long) read_register (tdep->DSR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", - (long) read_register (tdep->A0G_REGNUM) & 0xff, - (long) read_register (tdep->A0_REGNUM), - (long) read_register (tdep->M0_REGNUM), - (long) read_register (tdep->X0_REGNUM), - (long) read_register (tdep->Y0_REGNUM), - (long) read_register (tdep->RS_REGNUM), - (long) read_register (tdep->MOD_REGNUM)); - printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", - (long) read_register (tdep->A1G_REGNUM) & 0xff, - (long) read_register (tdep->A1_REGNUM), - (long) read_register (tdep->M1_REGNUM), - (long) read_register (tdep->X1_REGNUM), - (long) read_register (tdep->Y1_REGNUM), - (long) read_register (tdep->RE_REGNUM)); -} - -static void -sh64_show_media_regs (void) -{ - int i; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%016llx \n", - paddr (read_register (PC_REGNUM)), - (long long) read_register (tdep->SR_REGNUM)); - - printf_filtered ("SSR=%016llx SPC=%016llx \n", - (long long) read_register (tdep->SSR_REGNUM), - (long long) read_register (tdep->SPC_REGNUM)); - printf_filtered ("FPSCR=%016lx\n ", - (long) read_register (tdep->FPSCR_REGNUM)); - - for (i = 0; i < 64; i = i + 4) - printf_filtered ("\nR%d-R%d %016llx %016llx %016llx %016llx\n", - i, i + 3, - (long long) read_register (i + 0), - (long long) read_register (i + 1), - (long long) read_register (i + 2), - (long long) read_register (i + 3)); - - printf_filtered ("\n"); - - for (i = 0; i < 64; i = i + 8) - printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - i, i + 7, - (long) read_register (FP0_REGNUM + i + 0), - (long) read_register (FP0_REGNUM + i + 1), - (long) read_register (FP0_REGNUM + i + 2), - (long) read_register (FP0_REGNUM + i + 3), - (long) read_register (FP0_REGNUM + i + 4), - (long) read_register (FP0_REGNUM + i + 5), - (long) read_register (FP0_REGNUM + i + 6), - (long) read_register (FP0_REGNUM + i + 7)); -} - -static void -sh64_show_compact_regs (void) -{ - int i; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s \n", - paddr (read_register (tdep->PC_C_REGNUM))); - - printf_filtered ("GBR=%08lx MACH=%08lx MACL=%08lx PR=%08lx T=%08lx\n", - (long) read_register (tdep->GBR_C_REGNUM), - (long) read_register (tdep->MACH_C_REGNUM), - (long) read_register (tdep->MACL_C_REGNUM), - (long) read_register (tdep->PR_C_REGNUM), - (long) read_register (tdep->T_C_REGNUM)); - printf_filtered ("FPSCR=%08lx FPUL=%08lx\n", - (long) read_register (tdep->FPSCR_REGNUM), - (long) read_register (tdep->FPUL_REGNUM)); - - for (i = 0; i < 16; i = i + 4) - printf_filtered ("\nR%d-R%d %08lx %08lx %08lx %08lx\n", - i, i + 3, - (long) read_register (i + 0), - (long) read_register (i + 1), - (long) read_register (i + 2), - (long) read_register (i + 3)); - - printf_filtered ("\n"); - - for (i = 0; i < 16; i = i + 8) - printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - i, i + 7, - (long) read_register (FP0_REGNUM + i + 0), - (long) read_register (FP0_REGNUM + i + 1), - (long) read_register (FP0_REGNUM + i + 2), - (long) read_register (FP0_REGNUM + i + 3), - (long) read_register (FP0_REGNUM + i + 4), - (long) read_register (FP0_REGNUM + i + 5), - (long) read_register (FP0_REGNUM + i + 6), - (long) read_register (FP0_REGNUM + i + 7)); -} - -/*FIXME!!! This only shows the registers for shmedia, excluding the - pseudo registers. */ -static void -sh64_show_regs (void) -{ - if (pc_is_isa32 (selected_frame->pc)) - sh64_show_media_regs (); - else - sh64_show_compact_regs (); -} - -void sh_show_regs_command (char *args, int from_tty) -{ - if (sh_show_regs) - (*sh_show_regs)(); -} - -/* Index within `registers' of the first byte of the space for - register N. */ -static int -sh_default_register_byte (int reg_nr) -{ - return (reg_nr * 4); -} - -static int -sh_sh4_register_byte (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return (dr_reg_base_num (reg_nr) * 4); - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return (fv_reg_base_num (reg_nr) * 4); - else - return (reg_nr * 4); -} - -/* *INDENT-OFF* */ -/* - SH MEDIA MODE (ISA 32) - general registers (64-bit) 0-63 -0 r0, r1, r2, r3, r4, r5, r6, r7, -64 r8, r9, r10, r11, r12, r13, r14, r15, -128 r16, r17, r18, r19, r20, r21, r22, r23, -192 r24, r25, r26, r27, r28, r29, r30, r31, -256 r32, r33, r34, r35, r36, r37, r38, r39, -320 r40, r41, r42, r43, r44, r45, r46, r47, -384 r48, r49, r50, r51, r52, r53, r54, r55, -448 r56, r57, r58, r59, r60, r61, r62, r63, - - pc (64-bit) 64 -512 pc, - - status reg., saved status reg., saved pc reg. (64-bit) 65-67 -520 sr, ssr, spc, - - target registers (64-bit) 68-75 -544 tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7, - - floating point state control register (32-bit) 76 -608 fpscr, - - single precision floating point registers (32-bit) 77-140 -612 fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7, -644 fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15, -676 fr16, fr17, fr18, fr19, fr20, fr21, fr22, fr23, -708 fr24, fr25, fr26, fr27, fr28, fr29, fr30, fr31, -740 fr32, fr33, fr34, fr35, fr36, fr37, fr38, fr39, -772 fr40, fr41, fr42, fr43, fr44, fr45, fr46, fr47, -804 fr48, fr49, fr50, fr51, fr52, fr53, fr54, fr55, -836 fr56, fr57, fr58, fr59, fr60, fr61, fr62, fr63, - -TOTAL SPACE FOR REGISTERS: 868 bytes - -From here on they are all pseudo registers: no memory allocated. -REGISTER_BYTE returns the register byte for the base register. - - double precision registers (pseudo) 141-172 - dr0, dr2, dr4, dr6, dr8, dr10, dr12, dr14, - dr16, dr18, dr20, dr22, dr24, dr26, dr28, dr30, - dr32, dr34, dr36, dr38, dr40, dr42, dr44, dr46, - dr48, dr50, dr52, dr54, dr56, dr58, dr60, dr62, - - floating point pairs (pseudo) 173-204 - fp0, fp2, fp4, fp6, fp8, fp10, fp12, fp14, - fp16, fp18, fp20, fp22, fp24, fp26, fp28, fp30, - fp32, fp34, fp36, fp38, fp40, fp42, fp44, fp46, - fp48, fp50, fp52, fp54, fp56, fp58, fp60, fp62, - - floating point vectors (4 floating point regs) (pseudo) 205-220 - fv0, fv4, fv8, fv12, fv16, fv20, fv24, fv28, - fv32, fv36, fv40, fv44, fv48, fv52, fv56, fv60, - - SH COMPACT MODE (ISA 16) (all pseudo) 221-272 - r0_c, r1_c, r2_c, r3_c, r4_c, r5_c, r6_c, r7_c, - r8_c, r9_c, r10_c, r11_c, r12_c, r13_c, r14_c, r15_c, - pc_c, - gbr_c, mach_c, macl_c, pr_c, t_c, - fpscr_c, fpul_c, - fr0_c, fr1_c, fr2_c, fr3_c, fr4_c, fr5_c, fr6_c, fr7_c, - fr8_c, fr9_c, fr10_c, fr11_c, fr12_c, fr13_c, fr14_c, fr15_c - dr0_c, dr2_c, dr4_c, dr6_c, dr8_c, dr10_c, dr12_c, dr14_c - fv0_c, fv4_c, fv8_c, fv12_c -*/ -/* *INDENT-ON* */ -static int -sh_sh64_register_byte (int reg_nr) -{ - int base_regnum = -1; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - /* If it is a pseudo register, get the number of the first floating - point register that is part of it. */ - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - base_regnum = dr_reg_base_num (reg_nr); - - else if (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - base_regnum = fpp_reg_base_num (reg_nr); - - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - base_regnum = fv_reg_base_num (reg_nr); - - /* sh compact pseudo register. FPSCR is a pathological case, need to - treat it as special. */ - else if ((reg_nr >= tdep->R0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM) - && reg_nr != tdep->FPSCR_C_REGNUM) - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* Now return the offset in bytes within the register cache. */ - /* sh media pseudo register, i.e. any of DR, FFP, FV registers. */ - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return (base_regnum - FP0_REGNUM + 1) * 4 - + (tdep->TR7_REGNUM + 1) * 8; - - /* sh compact pseudo register: general register */ - if ((reg_nr >= tdep->R0_C_REGNUM - && reg_nr <= tdep->R_LAST_C_REGNUM)) - return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG - ? base_regnum * 8 + 4 - : base_regnum * 8); - - /* sh compact pseudo register: */ - if (reg_nr == tdep->PC_C_REGNUM - || reg_nr == tdep->GBR_C_REGNUM - || reg_nr == tdep->MACL_C_REGNUM - || reg_nr == tdep->PR_C_REGNUM) - return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG - ? base_regnum * 8 + 4 - : base_regnum * 8); - - if (reg_nr == tdep->MACH_C_REGNUM) - return base_regnum * 8; - - if (reg_nr == tdep->T_C_REGNUM) - return base_regnum * 8; /* FIXME??? how do we get bit 0? Do we have to? */ - - /* sh compact pseudo register: floating point register */ - else if (reg_nr >=tdep->FP0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM) - return (base_regnum - FP0_REGNUM) * 4 - + (tdep->TR7_REGNUM + 1) * 8 + 4; - - else if (reg_nr == tdep->FPSCR_C_REGNUM) - /* This is complicated, for now return the beginning of the - architectural FPSCR register. */ - return (tdep->TR7_REGNUM + 1) * 8; - - else if (reg_nr == tdep->FPUL_C_REGNUM) - return ((base_regnum - FP0_REGNUM) * 4 + - (tdep->TR7_REGNUM + 1) * 8 + 4); - - /* It is not a pseudo register. */ - /* It is a 64 bit register. */ - else if (reg_nr <= tdep->TR7_REGNUM) - return reg_nr * 8; - - /* It is a 32 bit register. */ - else - if (reg_nr == tdep->FPSCR_REGNUM) - return (tdep->FPSCR_REGNUM * 8); - - /* It is floating point 32-bit register */ - else - return ((tdep->TR7_REGNUM + 1) * 8 - + (reg_nr - FP0_REGNUM + 1) * 4); -} - -/* Number of bytes of storage in the actual machine representation for - register REG_NR. */ -static int -sh_default_register_raw_size (int reg_nr) -{ - return 4; -} - -static int -sh_sh4_register_raw_size (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return 8; - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return 16; - else - return 4; -} - -static int -sh_sh64_register_raw_size (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - || (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - || (reg_nr >= tdep->DR0_C_REGNUM - && reg_nr <= tdep->DR_LAST_C_REGNUM) - || (reg_nr <= tdep->TR7_REGNUM)) - return 8; - - else if ((reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - || (reg_nr >= tdep->FV0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM)) - return 16; - - else /* this covers also the 32-bit SH compact registers. */ - return 4; -} - -/* Number of bytes of storage in the program's representation - for register N. */ -static int -sh_register_virtual_size (int reg_nr) -{ - return 4; -} - -/* ??????? FIXME */ -static int -sh_sh64_register_virtual_size (int reg_nr) -{ - if (reg_nr >= FP0_REGNUM - && reg_nr <= gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM) - return 4; - else - return 8; -} - -/* Return the GDB type object for the "standard" data type - of data in register N. */ -static struct type * -sh_sh3e_register_virtual_type (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= FP0_REGNUM - && (reg_nr <= tdep->FP_LAST_REGNUM)) - || (reg_nr == tdep->FPUL_REGNUM)) - return builtin_type_float; - else - return builtin_type_int; -} - -static struct type * -sh_sh4_build_float_register_type (int high) -{ - struct type *temp; - - temp = create_range_type (NULL, builtin_type_int, 0, high); - return create_array_type (NULL, builtin_type_float, temp); -} - -static struct type * -sh_sh4_register_virtual_type (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= FP0_REGNUM - && (reg_nr <= tdep->FP_LAST_REGNUM)) - || (reg_nr == tdep->FPUL_REGNUM)) - return builtin_type_float; - else if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return builtin_type_double; - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return sh_sh4_build_float_register_type (3); - else - return builtin_type_int; -} - -static struct type * -sh_sh64_register_virtual_type (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= FP0_REGNUM - && reg_nr <= tdep->FP_LAST_REGNUM) - || (reg_nr >= tdep->FP0_C_REGNUM - && reg_nr <= tdep->FP_LAST_C_REGNUM)) - return builtin_type_float; - else if ((reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - || (reg_nr >= tdep->DR0_C_REGNUM - && reg_nr <= tdep->DR_LAST_C_REGNUM)) - return builtin_type_double; - else if (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - return sh_sh4_build_float_register_type (1); - else if ((reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - ||(reg_nr >= tdep->FV0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM)) - return sh_sh4_build_float_register_type (3); - else if (reg_nr == tdep->FPSCR_REGNUM) - return builtin_type_int; - else if (reg_nr >= tdep->R0_C_REGNUM - && reg_nr < tdep->FP0_C_REGNUM) - return builtin_type_int; - else - return builtin_type_long_long; -} - -static struct type * -sh_default_register_virtual_type (int reg_nr) -{ - return builtin_type_int; -} - -/* On the sh4, the DRi pseudo registers are problematic if the target - is little endian. When the user writes one of those registers, for - instance with 'ser var $dr0=1', we want the double to be stored - like this: - fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f - fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - - This corresponds to little endian byte order & big endian word - order. However if we let gdb write the register w/o conversion, it - will write fr0 and fr1 this way: - fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f - because it will consider fr0 and fr1 as a single LE stretch of memory. - - To achieve what we want we must force gdb to store things in - floatformat_ieee_double_littlebyte_bigword (which is defined in - include/floatformat.h and libiberty/floatformat.c. - - In case the target is big endian, there is no problem, the - raw bytes will look like: - fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 - fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - - The other pseudo registers (the FVs) also don't pose a problem - because they are stored as 4 individual FP elements. */ - -static void -sh_sh4_register_convert_to_virtual (int regnum, struct type *type, - char *from, char *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - { - DOUBLEST val; - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); - store_floating (to, TYPE_LENGTH (type), val); - } - else - error ("sh_register_convert_to_virtual called with non DR register number"); -} - -void -sh_sh64_register_convert_to_virtual (int regnum, struct type *type, - char *from, char *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE) - { - /* It is a no-op. */ - memcpy (to, from, REGISTER_RAW_SIZE (regnum)); - return; - } - - if ((regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - || (regnum >= tdep->DR0_C_REGNUM - && regnum <= tdep->DR_LAST_C_REGNUM)) - { - DOUBLEST val; - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); - store_floating(to, TYPE_LENGTH(type), val); - } - else - error("sh_register_convert_to_virtual called with non DR register number"); -} - -static void -sh_sh4_register_convert_to_raw (struct type *type, int regnum, - const void *from, void *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - { - DOUBLEST val = extract_floating (from, TYPE_LENGTH(type)); - floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to); - } - else - error("sh_register_convert_to_raw called with non DR register number"); -} - -void -sh_sh64_register_convert_to_raw (struct type *type, int regnum, - const void *from, void *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE) - { - /* It is a no-op. */ - memcpy (to, from, REGISTER_RAW_SIZE (regnum)); - return; - } - - if ((regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - || (regnum >= tdep->DR0_C_REGNUM - && regnum <= tdep->DR_LAST_C_REGNUM)) - { - DOUBLEST val = extract_floating (from, TYPE_LENGTH(type)); - floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to); - } - else - error("sh_register_convert_to_raw called with non DR register number"); -} - -void -sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, - int reg_nr, void *buffer) -{ - int base_regnum, portion; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* Read the real regs for which this one is an alias. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_read (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - /* We must pay attention to the endiannes. */ - sh_sh4_register_convert_to_virtual (reg_nr, - REGISTER_VIRTUAL_TYPE (reg_nr), - temp_buffer, buffer); - } - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - { - base_regnum = fv_reg_base_num (reg_nr); - - /* Read the real regs for which this one is an alias. */ - for (portion = 0; portion < 4; portion++) - regcache_raw_read (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } -} - -static void -sh64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, - int reg_nr, void *buffer) -{ - int base_regnum; - int portion; - int offset = 0; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* DR regs are double precision registers obtained by - concatenating 2 single precision floating point registers. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_read (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - - /* We must pay attention to the endiannes. */ - sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr), - temp_buffer, buffer); - - } - - else if (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - { - base_regnum = fpp_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* FPP regs are pairs of single precision registers obtained by - concatenating 2 single precision floating point registers. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_read (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - { - base_regnum = fv_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* FV regs are vectors of single precision registers obtained by - concatenating 4 single precision floating point registers. */ - for (portion = 0; portion < 4; portion++) - regcache_raw_read (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - /* sh compact pseudo registers. 1-to-1 with a shmedia register */ - else if (reg_nr >= tdep->R0_C_REGNUM - && reg_nr <= tdep->T_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - regcache_raw_read (regcache, base_regnum, temp_buffer); - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = 4; - memcpy (buffer, temp_buffer + offset, 4); /* get LOWER 32 bits only????*/ - } - - else if (reg_nr >= tdep->FP0_C_REGNUM - && reg_nr <= tdep->FP_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* Floating point registers map 1-1 to the media fp regs, - they have the same size and endienness. */ - regcache_raw_read (regcache, base_regnum, buffer); - } - - else if (reg_nr >= tdep->DR0_C_REGNUM - && reg_nr <= tdep->DR_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* DR_C regs are double precision registers obtained by - concatenating 2 single precision floating point registers. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_read (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - - /* We must pay attention to the endiannes. */ - sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr), - temp_buffer, buffer); - } - - else if (reg_nr >= tdep->FV0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* FV_C regs are vectors of single precision registers obtained by - concatenating 4 single precision floating point registers. */ - for (portion = 0; portion < 4; portion++) - regcache_raw_read (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - else if (reg_nr == tdep->FPSCR_C_REGNUM) - { - int fpscr_base_regnum; - int sr_base_regnum; - unsigned int fpscr_value; - unsigned int sr_value; - unsigned int fpscr_c_value; - unsigned int fpscr_c_part1_value; - unsigned int fpscr_c_part2_value; - - fpscr_base_regnum = tdep->FPSCR_REGNUM; - sr_base_regnum = tdep->SR_REGNUM; - - /* Build the value in the provided buffer. */ - /* FPSCR_C is a very weird register that contains sparse bits - from the FPSCR and the SR architectural registers. - Specifically: */ - /* *INDENT-OFF* */ - /* - FPSRC_C bit - 0 Bit 0 of FPSCR - 1 reserved - 2-17 Bit 2-18 of FPSCR - 18-20 Bits 12,13,14 of SR - 21-31 reserved - */ - /* *INDENT-ON* */ - /* Get FPSCR into a local buffer */ - regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer); - /* Get value as an int. */ - fpscr_value = extract_unsigned_integer (temp_buffer, 4); - /* Get SR into a local buffer */ - regcache_raw_read (regcache, sr_base_regnum, temp_buffer); - /* Get value as an int. */ - sr_value = extract_unsigned_integer (temp_buffer, 4); - /* Build the new value. */ - fpscr_c_part1_value = fpscr_value & 0x3fffd; - fpscr_c_part2_value = (sr_value & 0x7000) << 6; - fpscr_c_value = fpscr_c_part1_value | fpscr_c_part2_value; - /* Store that in out buffer!!! */ - store_unsigned_integer (buffer, 4, fpscr_c_value); - /* FIXME There is surely an endianness gotcha here. */ - } - - else if (reg_nr == tdep->FPUL_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - /* FPUL_C register is floating point register 32, - same size, same endianness. */ - regcache_raw_read (regcache, base_regnum, buffer); - } -} - -void -sh_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, - int reg_nr, const void *buffer) -{ - int base_regnum, portion; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - - /* We must pay attention to the endiannes. */ - sh_sh4_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr, - buffer, temp_buffer); - - /* Write the real regs for which this one is an alias. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_write (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - { - base_regnum = fv_reg_base_num (reg_nr); - - /* Write the real regs for which this one is an alias. */ - for (portion = 0; portion < 4; portion++) - regcache_raw_write (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } -} - -void -sh64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, - int reg_nr, const void *buffer) -{ - int base_regnum, portion; - int offset; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - /* We must pay attention to the endiannes. */ - sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr, - buffer, temp_buffer); - - - /* Write the real regs for which this one is an alias. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_write (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - else if (reg_nr >= tdep->FPP0_REGNUM - && reg_nr <= tdep->FPP_LAST_REGNUM) - { - base_regnum = fpp_reg_base_num (reg_nr); - - /* Write the real regs for which this one is an alias. */ - for (portion = 0; portion < 2; portion++) - regcache_raw_write (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - { - base_regnum = fv_reg_base_num (reg_nr); - - /* Write the real regs for which this one is an alias. */ - for (portion = 0; portion < 4; portion++) - regcache_raw_write (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - - /* sh compact general pseudo registers. 1-to-1 with a shmedia - register but only 4 bytes of it. */ - else if (reg_nr >= tdep->R0_C_REGNUM - && reg_nr <= tdep->T_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - /* reg_nr is 32 bit here, and base_regnum is 64 bits. */ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = 4; - else - offset = 0; - /* Let's read the value of the base register into a temporary - buffer, so that overwriting the last four bytes with the new - value of the pseudo will leave the upper 4 bytes unchanged. */ - regcache_raw_read (regcache, base_regnum, temp_buffer); - /* Write as an 8 byte quantity */ - memcpy (temp_buffer + offset, buffer, 4); - regcache_raw_write (regcache, base_regnum, temp_buffer); - } - - /* sh floating point compact pseudo registers. 1-to-1 with a shmedia - registers. Both are 4 bytes. */ - else if (reg_nr >= tdep->FP0_C_REGNUM - && reg_nr <= tdep->FP_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - regcache_raw_write (regcache, base_regnum, buffer); - } - - else if (reg_nr >= tdep->DR0_C_REGNUM - && reg_nr <= tdep->DR_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - for (portion = 0; portion < 2; portion++) - { - /* We must pay attention to the endiannes. */ - sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr, - buffer, temp_buffer); - - regcache_raw_write (regcache, base_regnum + portion, - (temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - } - - else if (reg_nr >= tdep->FV0_C_REGNUM - && reg_nr <= tdep->FV_LAST_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - - for (portion = 0; portion < 4; portion++) - { - regcache_raw_write (regcache, base_regnum + portion, - ((char *) buffer - + REGISTER_RAW_SIZE (base_regnum) * portion)); - } - } - - else if (reg_nr == tdep->FPSCR_C_REGNUM) - { - int fpscr_base_regnum; - int sr_base_regnum; - unsigned int fpscr_value; - unsigned int sr_value; - unsigned int old_fpscr_value; - unsigned int old_sr_value; - unsigned int fpscr_c_value; - unsigned int fpscr_mask; - unsigned int sr_mask; - - fpscr_base_regnum = tdep->FPSCR_REGNUM; - sr_base_regnum = tdep->SR_REGNUM; - - /* FPSCR_C is a very weird register that contains sparse bits - from the FPSCR and the SR architectural registers. - Specifically: */ - /* *INDENT-OFF* */ - /* - FPSRC_C bit - 0 Bit 0 of FPSCR - 1 reserved - 2-17 Bit 2-18 of FPSCR - 18-20 Bits 12,13,14 of SR - 21-31 reserved - */ - /* *INDENT-ON* */ - /* Get value as an int. */ - fpscr_c_value = extract_unsigned_integer (buffer, 4); - - /* Build the new values. */ - fpscr_mask = 0x0003fffd; - sr_mask = 0x001c0000; - - fpscr_value = fpscr_c_value & fpscr_mask; - sr_value = (fpscr_value & sr_mask) >> 6; - - regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer); - old_fpscr_value = extract_unsigned_integer (temp_buffer, 4); - old_fpscr_value &= 0xfffc0002; - fpscr_value |= old_fpscr_value; - store_unsigned_integer (temp_buffer, 4, fpscr_value); - regcache_raw_write (regcache, fpscr_base_regnum, temp_buffer); - - regcache_raw_read (regcache, sr_base_regnum, temp_buffer); - old_sr_value = extract_unsigned_integer (temp_buffer, 4); - old_sr_value &= 0xffff8fff; - sr_value |= old_sr_value; - store_unsigned_integer (temp_buffer, 4, sr_value); - regcache_raw_write (regcache, sr_base_regnum, temp_buffer); - } - - else if (reg_nr == tdep->FPUL_C_REGNUM) - { - base_regnum = sh64_compact_reg_base_num (reg_nr); - regcache_raw_write (regcache, base_regnum, buffer); - } -} - -/* Floating point vector of 4 float registers. */ -static void -do_fv_register_info (int fv_regnum) -{ - int first_fp_reg_num = fv_reg_base_num (fv_regnum); - printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", - fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num + 1), - (int) read_register (first_fp_reg_num + 2), - (int) read_register (first_fp_reg_num + 3)); -} - -/* Floating point vector of 4 float registers, compact mode. */ -static void -do_fv_c_register_info (int fv_regnum) -{ - int first_fp_reg_num = sh64_compact_reg_base_num (fv_regnum); - printf_filtered ("fv%d_c\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", - fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_C_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num + 1), - (int) read_register (first_fp_reg_num + 2), - (int) read_register (first_fp_reg_num + 3)); -} - -/* Pairs of single regs. The DR are instead double precision - registers. */ -static void -do_fpp_register_info (int fpp_regnum) -{ - int first_fp_reg_num = fpp_reg_base_num (fpp_regnum); - - printf_filtered ("fpp%d\t0x%08x\t0x%08x\n", - fpp_regnum - gdbarch_tdep (current_gdbarch)->FPP0_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num + 1)); -} - -/* Double precision registers. */ -static void -do_dr_register_info (int dr_regnum) -{ - int first_fp_reg_num = dr_reg_base_num (dr_regnum); - - printf_filtered ("dr%d\t0x%08x%08x\n", - dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num + 1)); -} - -/* Double precision registers, compact mode. */ -static void -do_dr_c_register_info (int dr_regnum) -{ - int first_fp_reg_num = sh64_compact_reg_base_num (dr_regnum); - - printf_filtered ("dr%d_c\t0x%08x%08x\n", - dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_C_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num +1)); -} - -/* General register in compact mode. */ -static void -do_r_c_register_info (int r_c_regnum) -{ - int regnum = sh64_compact_reg_base_num (r_c_regnum); - - printf_filtered ("r%d_c\t0x%08x\n", - r_c_regnum - gdbarch_tdep (current_gdbarch)->R0_C_REGNUM, - /*FIXME!!!*/ (int) read_register (regnum)); -} - -/* FIXME:!! THIS SHOULD TAKE CARE OF GETTING THE RIGHT PORTION OF THE - shmedia REGISTERS. */ -/* Control registers, compact mode. */ -static void -do_cr_c_register_info (int cr_c_regnum) -{ - switch (cr_c_regnum) - { - case 237: printf_filtered ("pc_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 238: printf_filtered ("gbr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 239: printf_filtered ("mach_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 240: printf_filtered ("macl_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 241: printf_filtered ("pr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 242: printf_filtered ("t_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 243: printf_filtered ("fpscr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); - break; - case 244: printf_filtered ("fpul_c\t0x%08x\n", (int)read_register (cr_c_regnum)); - break; - } -} - -static void -sh_do_pseudo_register (int regnum) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS) - internal_error (__FILE__, __LINE__, - "Invalid pseudo register number %d\n", regnum); - else if (regnum >= tdep->DR0_REGNUM - && regnum < tdep->DR_LAST_REGNUM) - do_dr_register_info (regnum); - else if (regnum >= tdep->FV0_REGNUM - && regnum <= tdep->FV_LAST_REGNUM) - do_fv_register_info (regnum); -} - -static void -sh_do_fp_register (int regnum) -{ /* do values for FP (float) regs */ - char *raw_buffer; - double flt; /* double extracted from raw hex data */ - int inv; - int j; - - /* Allocate space for the float. */ - raw_buffer = (char *) alloca (REGISTER_RAW_SIZE (FP0_REGNUM)); - - /* Get the data in raw format. */ - if (!frame_register_read (selected_frame, regnum, raw_buffer)) - error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum)); - - /* Get the register as a number */ - flt = unpack_double (builtin_type_float, raw_buffer, &inv); - - /* Print the name and some spaces. */ - fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); - print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); - - /* Print the value. */ - if (inv) - printf_filtered ("<invalid float>"); - else - printf_filtered ("%-10.9g", flt); - - /* Print the fp register as hex. */ - printf_filtered ("\t(raw 0x"); - for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++) - { - register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j - : REGISTER_RAW_SIZE (regnum) - 1 - j; - printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); - } - printf_filtered (")"); - printf_filtered ("\n"); -} - -static void -sh64_do_pseudo_register (int regnum) -{ - /* All the sh64-compact mode registers are pseudo registers. */ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum < NUM_REGS - || regnum >= NUM_REGS + NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT) - internal_error (__FILE__, __LINE__, - "Invalid pseudo register number %d\n", regnum); - - else if ((regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM)) - do_dr_register_info (regnum); - - else if ((regnum >= tdep->DR0_C_REGNUM - && regnum <= tdep->DR_LAST_C_REGNUM)) - do_dr_c_register_info (regnum); - - else if ((regnum >= tdep->FV0_REGNUM - && regnum <= tdep->FV_LAST_REGNUM)) - do_fv_register_info (regnum); - - else if ((regnum >= tdep->FV0_C_REGNUM - && regnum <= tdep->FV_LAST_C_REGNUM)) - do_fv_c_register_info (regnum); - - else if (regnum >= tdep->FPP0_REGNUM - && regnum <= tdep->FPP_LAST_REGNUM) - do_fpp_register_info (regnum); - - else if (regnum >= tdep->R0_C_REGNUM - && regnum <= tdep->R_LAST_C_REGNUM) - do_r_c_register_info (regnum); /* FIXME, this function will not print the right format */ - - else if (regnum >= tdep->FP0_C_REGNUM - && regnum <= tdep->FP_LAST_C_REGNUM) - sh_do_fp_register (regnum); /* this should work also for pseudoregs */ - - else if (regnum >= tdep->PC_C_REGNUM - && regnum <= tdep->FPUL_C_REGNUM) - do_cr_c_register_info (regnum); - -} - -static void -sh_do_register (int regnum) -{ - char raw_buffer[MAX_REGISTER_RAW_SIZE]; - - fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); - print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); - - /* Get the data in raw format. */ - if (!frame_register_read (selected_frame, regnum, raw_buffer)) - printf_filtered ("*value not available*\n"); - - val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, - gdb_stdout, 'x', 1, 0, Val_pretty_default); - printf_filtered ("\t"); - val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, - gdb_stdout, 0, 1, 0, Val_pretty_default); - printf_filtered ("\n"); -} - -static void -sh_print_register (int regnum) -{ - if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS) - internal_error (__FILE__, __LINE__, - "Invalid register number %d\n", regnum); - - else if (regnum >= 0 && regnum < NUM_REGS) - { - if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) - sh_do_fp_register (regnum); /* FP regs */ - else - sh_do_register (regnum); /* All other regs */ - } - - else if (regnum < NUM_REGS + NUM_PSEUDO_REGS) - do_pseudo_register (regnum); -} - -void -sh_do_registers_info (int regnum, int fpregs) -{ - if (regnum != -1) /* do one specified register */ - { - if (*(REGISTER_NAME (regnum)) == '\0') - error ("Not a valid register for the current processor type"); - - sh_print_register (regnum); - } - else - /* do all (or most) registers */ - { - regnum = 0; - while (regnum < NUM_REGS) - { - /* If the register name is empty, it is undefined for this - processor, so don't display anything. */ - if (REGISTER_NAME (regnum) == NULL - || *(REGISTER_NAME (regnum)) == '\0') - { - regnum++; - continue; - } - - if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) - { - if (fpregs) - { - /* true for "INFO ALL-REGISTERS" command */ - sh_do_fp_register (regnum); /* FP regs */ - regnum ++; - } - else - regnum += (gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */ - } - else - { - sh_do_register (regnum); /* All other regs */ - regnum++; - } - } - - if (fpregs) - while (regnum < NUM_REGS + NUM_PSEUDO_REGS) - { - do_pseudo_register (regnum); - regnum++; - } - } -} - -void -sh_compact_do_registers_info (int regnum, int fpregs) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - if (regnum != -1) /* do one specified register */ - { - if (*(REGISTER_NAME (regnum)) == '\0') - error ("Not a valid register for the current processor type"); - - if (regnum >= 0 && regnum < tdep->R0_C_REGNUM) - error ("Not a valid register for the current processor mode."); - - sh_print_register (regnum); - } - else - /* do all compact registers */ - { - regnum = tdep->R0_C_REGNUM; - while (regnum < NUM_REGS + NUM_PSEUDO_REGS) - { - do_pseudo_register (regnum); - regnum++; - } - } -} - -void -sh64_do_registers_info (int regnum, int fpregs) -{ - if (pc_is_isa32 (selected_frame->pc)) - sh_do_registers_info (regnum, fpregs); - else - sh_compact_do_registers_info (regnum, fpregs); -} - -#ifdef SVR4_SHARED_LIBS - -/* Fetch (and possibly build) an appropriate link_map_offsets structure - for native i386 linux targets using the struct offsets defined in - link.h (but without actual reference to that file). - - This makes it possible to access i386-linux shared libraries from - a gdb that was not built on an i386-linux host (for cross debugging). - */ - -struct link_map_offsets * -sh_linux_svr4_fetch_link_map_offsets (void) -{ - static struct link_map_offsets lmo; - static struct link_map_offsets *lmp = 0; - - if (lmp == 0) - { - lmp = &lmo; - - lmo.r_debug_size = 8; /* 20 not actual size but all we need */ - - lmo.r_map_offset = 4; - lmo.r_map_size = 4; - - lmo.link_map_size = 20; /* 552 not actual size but all we need */ - - lmo.l_addr_offset = 0; - lmo.l_addr_size = 4; - - lmo.l_name_offset = 4; - lmo.l_name_size = 4; - - lmo.l_next_offset = 12; - lmo.l_next_size = 4; - - lmo.l_prev_offset = 16; - lmo.l_prev_size = 4; - } - - return lmp; -} -#endif /* SVR4_SHARED_LIBS */ - - -enum -{ - DSP_DSR_REGNUM = 24, - DSP_A0G_REGNUM, - DSP_A0_REGNUM, - DSP_A1G_REGNUM, - DSP_A1_REGNUM, - DSP_M0_REGNUM, - DSP_M1_REGNUM, - DSP_X0_REGNUM, - DSP_X1_REGNUM, - DSP_Y0_REGNUM, - DSP_Y1_REGNUM, - - DSP_MOD_REGNUM = 40, - - DSP_RS_REGNUM = 43, - DSP_RE_REGNUM, - - DSP_R0_BANK_REGNUM = 51, - DSP_R7_BANK_REGNUM = DSP_R0_BANK_REGNUM + 7 -}; - -static int -sh_dsp_register_sim_regno (int nr) -{ - if (legacy_register_sim_regno (nr) < 0) - return legacy_register_sim_regno (nr); - if (nr >= DSP_DSR_REGNUM && nr < DSP_Y1_REGNUM) - return nr - DSP_DSR_REGNUM + SIM_SH_DSR_REGNUM; - if (nr == DSP_MOD_REGNUM) - return SIM_SH_MOD_REGNUM; - if (nr == DSP_RS_REGNUM) - return SIM_SH_RS_REGNUM; - if (nr == DSP_RE_REGNUM) - return SIM_SH_RE_REGNUM; - if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM) - return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM; - return nr; -} - -static gdbarch_init_ftype sh_gdbarch_init; - -static struct gdbarch * -sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) -{ - static LONGEST sh_call_dummy_words[] = {0}; - struct gdbarch *gdbarch; - struct gdbarch_tdep *tdep; - gdbarch_register_name_ftype *sh_register_name; - gdbarch_deprecated_store_return_value_ftype *sh_store_return_value; - gdbarch_register_virtual_type_ftype *sh_register_virtual_type; - enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; - - /* Try to determine the ABI of the object we are loading. */ - - if (info.abfd != NULL) - { - osabi = gdbarch_lookup_osabi (info.abfd); - /* If we get "unknown" back, just leave it that way. */ - } - - /* Find a candidate among the list of pre-declared architectures. */ - for (arches = gdbarch_list_lookup_by_info (arches, &info); - arches != NULL; - arches = gdbarch_list_lookup_by_info (arches->next, &info)) - { - /* Make sure the ABI selection matches. */ - tdep = gdbarch_tdep (arches->gdbarch); - if (tdep && tdep->osabi == osabi) - return arches->gdbarch; - } - - /* None found, create a new architecture from the information - provided. */ - tdep = XMALLOC (struct gdbarch_tdep); - gdbarch = gdbarch_alloc (&info, tdep); - - tdep->osabi = osabi; - - /* Initialize the register numbers that are not common to all the - variants to -1, if necessary thse will be overwritten in the case - statement below. */ - tdep->FPUL_REGNUM = -1; - tdep->FPSCR_REGNUM = -1; - tdep->PR_REGNUM = 17; - tdep->SR_REGNUM = 22; - tdep->DSR_REGNUM = -1; - tdep->FP_LAST_REGNUM = -1; - tdep->A0G_REGNUM = -1; - tdep->A0_REGNUM = -1; - tdep->A1G_REGNUM = -1; - tdep->A1_REGNUM = -1; - tdep->M0_REGNUM = -1; - tdep->M1_REGNUM = -1; - tdep->X0_REGNUM = -1; - tdep->X1_REGNUM = -1; - tdep->Y0_REGNUM = -1; - tdep->Y1_REGNUM = -1; - tdep->MOD_REGNUM = -1; - tdep->RS_REGNUM = -1; - tdep->RE_REGNUM = -1; - tdep->SSR_REGNUM = -1; - tdep->SPC_REGNUM = -1; - tdep->DR0_REGNUM = -1; - tdep->DR_LAST_REGNUM = -1; - tdep->FV0_REGNUM = -1; - tdep->FV_LAST_REGNUM = -1; - tdep->ARG0_REGNUM = 4; - tdep->ARGLAST_REGNUM = 7; - tdep->RETURN_REGNUM = 0; - tdep->FLOAT_ARGLAST_REGNUM = -1; - - tdep->sh_abi = SH_ABI_UNKNOWN; - - set_gdbarch_fp0_regnum (gdbarch, -1); - set_gdbarch_num_pseudo_regs (gdbarch, 0); - set_gdbarch_max_register_raw_size (gdbarch, 4); - set_gdbarch_max_register_virtual_size (gdbarch, 4); - set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_num_regs (gdbarch, SH_DEFAULT_NUM_REGS); - set_gdbarch_sp_regnum (gdbarch, 15); - set_gdbarch_fp_regnum (gdbarch, 14); - set_gdbarch_pc_regnum (gdbarch, 16); - set_gdbarch_register_size (gdbarch, 4); - set_gdbarch_register_bytes (gdbarch, SH_DEFAULT_NUM_REGS * 4); - set_gdbarch_do_registers_info (gdbarch, sh_do_registers_info); - set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); - set_gdbarch_frame_chain (gdbarch, sh_frame_chain); - set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); - set_gdbarch_init_extra_frame_info (gdbarch, sh_init_extra_frame_info); - set_gdbarch_deprecated_extract_return_value (gdbarch, sh_extract_return_value); - set_gdbarch_push_arguments (gdbarch, sh_push_arguments); - set_gdbarch_store_struct_return (gdbarch, sh_store_struct_return); - set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention); - set_gdbarch_deprecated_extract_struct_value_address (gdbarch, sh_extract_struct_value_address); - set_gdbarch_pop_frame (gdbarch, sh_pop_frame); - set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh); - set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno); - skip_prologue_hard_way = sh_skip_prologue_hard_way; - do_pseudo_register = sh_do_pseudo_register; - - switch (info.bfd_arch_info->mach) - { - case bfd_mach_sh: - sh_register_name = sh_sh_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - case bfd_mach_sh2: - sh_register_name = sh_sh_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - case bfd_mach_sh_dsp: - sh_register_name = sh_sh_dsp_register_name; - sh_show_regs = sh_dsp_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno); - tdep->DSR_REGNUM = 24; - tdep->A0G_REGNUM = 25; - tdep->A0_REGNUM = 26; - tdep->A1G_REGNUM = 27; - tdep->A1_REGNUM = 28; - tdep->M0_REGNUM = 29; - tdep->M1_REGNUM = 30; - tdep->X0_REGNUM = 31; - tdep->X1_REGNUM = 32; - tdep->Y0_REGNUM = 33; - tdep->Y1_REGNUM = 34; - tdep->MOD_REGNUM = 40; - tdep->RS_REGNUM = 43; - tdep->RE_REGNUM = 44; - break; - case bfd_mach_sh3: - sh_register_name = sh_sh3_register_name; - sh_show_regs = sh3_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh3e: - sh_register_name = sh_sh3e_register_name; - sh_show_regs = sh3e_show_regs; - sh_store_return_value = sh3e_sh4_store_return_value; - sh_register_virtual_type = sh_sh3e_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - set_gdbarch_deprecated_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); - set_gdbarch_fp0_regnum (gdbarch, 25); - tdep->FPUL_REGNUM = 23; - tdep->FPSCR_REGNUM = 24; - tdep->FP_LAST_REGNUM = 40; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh3_dsp: - sh_register_name = sh_sh3_dsp_register_name; - sh_show_regs = sh3_dsp_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - tdep->DSR_REGNUM = 24; - tdep->A0G_REGNUM = 25; - tdep->A0_REGNUM = 26; - tdep->A1G_REGNUM = 27; - tdep->A1_REGNUM = 28; - tdep->M0_REGNUM = 29; - tdep->M1_REGNUM = 30; - tdep->X0_REGNUM = 31; - tdep->X1_REGNUM = 32; - tdep->Y0_REGNUM = 33; - tdep->Y1_REGNUM = 34; - tdep->MOD_REGNUM = 40; - tdep->RS_REGNUM = 43; - tdep->RE_REGNUM = 44; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh4: - sh_register_name = sh_sh4_register_name; - sh_show_regs = sh4_show_regs; - sh_store_return_value = sh3e_sh4_store_return_value; - sh_register_virtual_type = sh_sh4_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); - set_gdbarch_deprecated_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); - set_gdbarch_fp0_regnum (gdbarch, 25); - set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_sh4_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_sh4_register_byte); - set_gdbarch_num_pseudo_regs (gdbarch, 12); - set_gdbarch_max_register_raw_size (gdbarch, 4 * 4); - set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4); - set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read); - set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write); - tdep->FPUL_REGNUM = 23; - tdep->FPSCR_REGNUM = 24; - tdep->FP_LAST_REGNUM = 40; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - tdep->DR0_REGNUM = 59; - tdep->DR_LAST_REGNUM = 66; - tdep->FV0_REGNUM = 67; - tdep->FV_LAST_REGNUM = 70; - break; - case bfd_mach_sh5: - tdep->PR_REGNUM = 18; - tdep->SR_REGNUM = 65; - tdep->FPSCR_REGNUM = SIM_SH64_FPCSR_REGNUM; - tdep->FP_LAST_REGNUM = SIM_SH64_FR0_REGNUM + SIM_SH64_NR_FP_REGS - 1; - tdep->SSR_REGNUM = SIM_SH64_SSR_REGNUM; - tdep->SPC_REGNUM = SIM_SH64_SPC_REGNUM; - tdep->TR7_REGNUM = SIM_SH64_TR0_REGNUM + 7; - tdep->FPP0_REGNUM = 173; - tdep->FPP_LAST_REGNUM = 204; - tdep->DR0_REGNUM = 141; - tdep->DR_LAST_REGNUM = 172; - tdep->FV0_REGNUM = 205; - tdep->FV_LAST_REGNUM = 220; - tdep->R0_C_REGNUM = 221; - tdep->R_LAST_C_REGNUM = 236; - tdep->PC_C_REGNUM = 237; - tdep->GBR_C_REGNUM = 238; - tdep->MACH_C_REGNUM = 239; - tdep->MACL_C_REGNUM = 240; - tdep->PR_C_REGNUM = 241; - tdep->T_C_REGNUM = 242; - tdep->FPSCR_C_REGNUM = 243; - tdep->FPUL_C_REGNUM = 244; - tdep->FP0_C_REGNUM = 245; - tdep->FP_LAST_C_REGNUM = 260; - tdep->DR0_C_REGNUM = 261; - tdep->DR_LAST_C_REGNUM = 268; - tdep->FV0_C_REGNUM = 269; - tdep->FV_LAST_C_REGNUM = 272; - tdep->ARG0_REGNUM = 2; - tdep->ARGLAST_REGNUM = 9; - tdep->RETURN_REGNUM = 2; - tdep->FLOAT_ARGLAST_REGNUM = 11; - - set_gdbarch_num_pseudo_regs (gdbarch, NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT); - set_gdbarch_fp0_regnum (gdbarch, SIM_SH64_FR0_REGNUM); - set_gdbarch_pc_regnum (gdbarch, 64); - - /* Determine the ABI */ - if (bfd_get_arch_size (info.abfd) == 64) - { - /* If the ABI is the 64-bit one, it can only be sh-media. */ - tdep->sh_abi = SH_ABI_64; - set_gdbarch_ptr_bit (gdbarch, 8 * TARGET_CHAR_BIT); - set_gdbarch_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); - } - else - { - /* If the ABI is the 32-bit one it could be either media or - compact. */ - tdep->sh_abi = SH_ABI_32; - set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); - } - - /* the number of real registers is the same whether we are in - ISA16(compact) or ISA32(media). */ - set_gdbarch_num_regs (gdbarch, SIM_SH64_NR_REGS); - set_gdbarch_register_size (gdbarch, 8); /*????*/ - set_gdbarch_register_bytes (gdbarch, - ((SIM_SH64_NR_FP_REGS + 1) * 4) - + (SIM_SH64_NR_REGS - SIM_SH64_NR_FP_REGS -1) * 8); - - sh_register_name = sh_sh64_register_name; - sh_show_regs = sh64_show_regs; - sh_register_virtual_type = sh_sh64_register_virtual_type; - sh_store_return_value = sh64_store_return_value; - skip_prologue_hard_way = sh64_skip_prologue_hard_way; - do_pseudo_register = sh64_do_pseudo_register; - set_gdbarch_register_raw_size (gdbarch, sh_sh64_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_sh64_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_sh64_register_byte); - /* This seems awfully wrong!*/ - /*set_gdbarch_max_register_raw_size (gdbarch, 8);*/ - /* should include the size of the pseudo regs. */ - set_gdbarch_max_register_raw_size (gdbarch, 4 * 4); - /* Or should that go in the virtual_size? */ - /*set_gdbarch_max_register_virtual_size (gdbarch, 8);*/ - set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4); - set_gdbarch_pseudo_register_read (gdbarch, sh64_pseudo_register_read); - set_gdbarch_pseudo_register_write (gdbarch, sh64_pseudo_register_write); - - set_gdbarch_do_registers_info (gdbarch, sh64_do_registers_info); - set_gdbarch_frame_init_saved_regs (gdbarch, sh64_nofp_frame_init_saved_regs); - set_gdbarch_breakpoint_from_pc (gdbarch, sh_sh64_breakpoint_from_pc); - set_gdbarch_init_extra_frame_info (gdbarch, sh64_init_extra_frame_info); - set_gdbarch_frame_chain (gdbarch, sh64_frame_chain); - set_gdbarch_get_saved_register (gdbarch, sh64_get_saved_register); - set_gdbarch_deprecated_extract_return_value (gdbarch, sh64_extract_return_value); - set_gdbarch_push_arguments (gdbarch, sh64_push_arguments); - /*set_gdbarch_store_struct_return (gdbarch, sh64_store_struct_return);*/ - set_gdbarch_deprecated_extract_struct_value_address (gdbarch, sh64_extract_struct_value_address); - set_gdbarch_use_struct_convention (gdbarch, sh64_use_struct_convention); - set_gdbarch_pop_frame (gdbarch, sh64_pop_frame); - set_gdbarch_elf_make_msymbol_special (gdbarch, - sh64_elf_make_msymbol_special); - break; - default: - sh_register_name = sh_generic_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - } - - set_gdbarch_read_pc (gdbarch, generic_target_read_pc); - set_gdbarch_write_pc (gdbarch, generic_target_write_pc); - set_gdbarch_read_fp (gdbarch, generic_target_read_fp); - set_gdbarch_read_sp (gdbarch, generic_target_read_sp); - set_gdbarch_write_sp (gdbarch, generic_target_write_sp); - - set_gdbarch_register_name (gdbarch, sh_register_name); - set_gdbarch_register_virtual_type (gdbarch, sh_register_virtual_type); - - set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); - set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); - set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); - set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);/*??should be 8?*/ - - set_gdbarch_use_generic_dummy_frames (gdbarch, 1); - set_gdbarch_call_dummy_length (gdbarch, 0); - set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); - set_gdbarch_call_dummy_address (gdbarch, entry_point_address); - set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); /*???*/ - set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); - set_gdbarch_call_dummy_start_offset (gdbarch, 0); - set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy); - set_gdbarch_call_dummy_words (gdbarch, sh_call_dummy_words); - set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words)); - set_gdbarch_call_dummy_p (gdbarch, 1); - set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); - set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); - set_gdbarch_coerce_float_to_double (gdbarch, - sh_coerce_float_to_double); - - set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); - set_gdbarch_push_return_address (gdbarch, sh_push_return_address); - - set_gdbarch_deprecated_store_return_value (gdbarch, sh_store_return_value); - set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue); - set_gdbarch_inner_than (gdbarch, core_addr_lessthan); - set_gdbarch_decr_pc_after_break (gdbarch, 0); - set_gdbarch_function_start_offset (gdbarch, 0); - - set_gdbarch_frame_args_skip (gdbarch, 0); - set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); - set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); - set_gdbarch_frame_saved_pc (gdbarch, sh_frame_saved_pc); - set_gdbarch_frame_args_address (gdbarch, default_frame_address); - set_gdbarch_frame_locals_address (gdbarch, default_frame_address); - set_gdbarch_saved_pc_after_call (gdbarch, sh_saved_pc_after_call); - set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); - set_gdbarch_believe_pcc_promotion (gdbarch, 1); - - /* Hook in ABI-specific overrides, if they have been registered. - - FIXME: if the ABI is unknown, this is probably an embedded target, - so we should not warn about this situation. */ - gdbarch_init_osabi (info, gdbarch, osabi); - - return gdbarch; -} - -static void -sh_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (tdep == NULL) - return; - - fprintf_unfiltered (file, "sh_dump_tdep: OS ABI = %s\n", - gdbarch_osabi_name (tdep->osabi)); -} - -void -_initialize_sh_tdep (void) -{ - struct cmd_list_element *c; - - gdbarch_register (bfd_arch_sh, sh_gdbarch_init, sh_dump_tdep); - - add_com ("regs", class_vars, sh_show_regs_command, "Print all registers"); -} |