diff options
Diffstat (limited to 'gdb/gdbserver')
| -rw-r--r-- | gdb/gdbserver/low-linux.c | 59 |
1 files changed, 32 insertions, 27 deletions
diff --git a/gdb/gdbserver/low-linux.c b/gdb/gdbserver/low-linux.c index eb55128..ea210f3 100644 --- a/gdb/gdbserver/low-linux.c +++ b/gdb/gdbserver/low-linux.c @@ -155,8 +155,26 @@ myresume (int step, int signal) #endif #ifdef I386_GNULINUX_TARGET -/* i386_register_raw_size[i] is the number of bytes of storage in the - actual machine representation for register i. */ +/* This module only supports access to the general purpose registers. + Adjust the relevant constants accordingly. + + FIXME: kettenis/2001-03-28: We should really use PTRACE_GETREGS to + get at the registers. Better yet, we should try to share code with + i386-linux-nat.c. */ +#undef NUM_FREGS +#define NUM_FREGS 0 +#undef NUM_REGS +#define NUM_REGS NUM_GREGS + +/* This stuff comes from i386-tdep.c. */ + +/* i386_register_byte[i] is the offset into the register file of the + start of register number i. We initialize this from + i386_register_raw_size. */ +int i386_register_byte[MAX_NUM_REGS]; + +/* i386_register_raw_size[i] is the number of bytes of storage in + GDB's register array occupied by register i. */ int i386_register_raw_size[MAX_NUM_REGS] = { 4, 4, 4, 4, 4, 4, 4, 4, @@ -171,8 +189,6 @@ int i386_register_raw_size[MAX_NUM_REGS] = { 4 }; -int i386_register_byte[MAX_NUM_REGS]; - static void initialize_arch (void) { @@ -190,36 +206,25 @@ initialize_arch (void) } } -/* this table must line up with REGISTER_NAMES in tm-i386v.h */ -/* symbols like 'EAX' come from <sys/reg.h> */ -static int regmap[] = +/* This stuff comes from i386-linux-nat.c. */ + +/* Mapping between the general-purpose registers in `struct user' + format and GDB's register array layout. */ +static int regmap[] = { EAX, ECX, EDX, EBX, UESP, EBP, ESI, EDI, EIP, EFL, CS, SS, - DS, ES, FS, GS, + DS, ES, FS, GS }; -int -i386_register_u_addr (int blockend, int regnum) -{ -#if 0 - /* this will be needed if fp registers are reinstated */ - /* for now, you can look at them with 'info float' - * sys5 wont let you change them with ptrace anyway - */ - if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) - { - int ubase, fpstate; - struct user u; - ubase = blockend + 4 * (SS + 1) - KSTKSZ; - fpstate = ubase + ((char *) &u.u_fpstate - (char *) &u); - return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM)); - } - else -#endif - return (blockend + 4 * regmap[regnum]); +/* Return the address of register REGNUM. BLOCKEND is the value of + u.u_ar0, which should point to the registers. */ +CORE_ADDR +register_u_addr (CORE_ADDR blockend, int regnum) +{ + return (blockend + 4 * regmap[regnum]); } #elif defined(TARGET_M68K) static void |