diff options
Diffstat (limited to 'gdb/go32-nat.c')
| -rw-r--r-- | gdb/go32-nat.c | 126 |
1 files changed, 115 insertions, 11 deletions
diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c index 782d240..2572a11 100644 --- a/gdb/go32-nat.c +++ b/gdb/go32-nat.c @@ -29,12 +29,72 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "command.h" #include "floatformat.h" +#include <stdio.h> /* required for __DJGPP_MINOR__ */ #include <stdlib.h> #include <string.h> #include <unistd.h> #include <debug/v2load.h> #include <debug/dbgcom.h> +#if __DJGPP_MINOR__ < 3 +/* This code will be provided from DJGPP 2.03 on. Until then I code it + here */ +typedef struct { + unsigned short sig0; + unsigned short sig1; + unsigned short sig2; + unsigned short sig3; + unsigned short exponent:15; + unsigned short sign:1; +} NPXREG; + +typedef struct { + unsigned int control; + unsigned int status; + unsigned int tag; + unsigned int eip; + unsigned int cs; + unsigned int dataptr; + unsigned int datasel; + NPXREG reg[8]; +} NPX; + +static NPX npx; + +static void save_npx (void); /* Save the FPU of the debugged program */ +static void load_npx (void); /* Restore the FPU of the debugged program */ + +/* ------------------------------------------------------------------------- */ +/* Store the contents of the NPX in the global variable `npx'. */ + +static void +save_npx (void) +{ + asm ("inb $0xa0, %%al + testb $0x20, %%al + jz 1f + xorb %%al, %%al + outb %%al, $0xf0 + movb $0x20, %%al + outb %%al, $0xa0 + outb %%al, $0x20 +1: + fnsave %0 + fwait" + : "=m" (npx) + : /* No input */ + : "%eax"); +} +/* ------------------------------------------------------------------------- */ +/* Reload the contents of the NPX from the global variable `npx'. */ + +static void +load_npx (void) +{ + asm ("frstor %0" : "=m" (npx)); +} +#endif /* __DJGPP_MINOR < 3 */ + extern void _initialize_go32_nat (void); struct env387 @@ -58,9 +118,54 @@ extern char **environ; #define SOME_PID 42 -/* FIXME add decls of all static functions here */ - static int prog_has_started = 0; +static void +print_387_status (unsigned short status, struct env387 *ep); +static void +go32_open (char *name, int from_tty); +static void +go32_close (int quitting); +static void +go32_attach (char *args, int from_tty); +static void +go32_detach (char *args, int from_tty); +static void +go32_resume (int pid, int step, enum target_signal siggnal); +static int +go32_wait (int pid, struct target_waitstatus *status); +static void +go32_fetch_registers (int regno); +static void +store_register (int regno); +static void +go32_store_registers (int regno); +static void +go32_prepare_to_store (void); +static int +go32_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, + struct target_ops *target); +static void +go32_files_info (struct target_ops *target); +static void +go32_stop (void); +static void +go32_kill_inferior (void); +static void +go32_create_inferior (char *exec_file, char *args, char **env); +static void +go32_mourn_inferior (void); +static int +go32_can_run (void); +static void +ignore (void); +static void +ignore2 (char *a, int b); +static int go32_insert_aligned_watchpoint (int pid, CORE_ADDR waddr, + CORE_ADDR addr, int len, int rw); +static int go32_insert_nonaligned_watchpoint (int pid, CORE_ADDR waddr, + CORE_ADDR addr, int len, int rw); + +static struct target_ops go32_ops; static void print_387_status (unsigned short status, struct env387 *ep) @@ -245,7 +350,13 @@ go32_wait (int pid, struct target_waitstatus *status) else a_tss.tss_eflags &= 0xfeff; +#if __DJGPP_MINOR__ < 3 + save_npx (); +#endif run_child (); +#if __DJGPP_MINOR__ < 3 + load_npx (); +#endif if (a_tss.tss_irqn == 0x21) { @@ -388,7 +499,6 @@ go32_stop (void) static void go32_kill_inferior (void) { - go32_stop (); unpush_target (&go32_ops); } @@ -401,6 +511,7 @@ go32_create_inferior (char *exec_file, char *args, char **env) if (prog_has_started) { + go32_stop (); go32_kill_inferior (); } @@ -426,6 +537,7 @@ go32_create_inferior (char *exec_file, char *args, char **env) clear_proceed_status (); insert_breakpoints (); proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0); + prog_has_started = 1; } static void @@ -522,12 +634,6 @@ do { \ #define SHOW_DR(text) do {} while (0) #endif -static int go32_insert_aligned_watchpoint (int pid, CORE_ADDR waddr, - CORE_ADDR addr, int len, int rw); - -static int go32_insert_nonaligned_watchpoint (int pid, CORE_ADDR waddr, - CORE_ADDR addr, int len, int rw); - /* Insert a watchpoint. */ int @@ -706,8 +812,6 @@ go32_insert_hw_breakpoint (CORE_ADDR addr, CORE_ADDR shadow) return 0; } -static struct target_ops go32_ops; - static void init_go32_ops (void) { |