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-rw-r--r--gdb/arm-linux-nat.c318
1 files changed, 30 insertions, 288 deletions
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c
index 0cfec20..5111510 100644
--- a/gdb/arm-linux-nat.c
+++ b/gdb/arm-linux-nat.c
@@ -28,6 +28,7 @@
#include "linux-nat.h"
#include "arm-tdep.h"
+#include "arm-linux-tdep.h"
#include <sys/user.h>
#include <sys/ptrace.h>
@@ -46,32 +47,6 @@
extern int arm_apcs_32;
-#define typeNone 0x00
-#define typeSingle 0x01
-#define typeDouble 0x02
-#define typeExtended 0x03
-#define FPWORDS 28
-#define ARM_CPSR_REGNUM 16
-
-typedef union tagFPREG
- {
- unsigned int fSingle;
- unsigned int fDouble[2];
- unsigned int fExtended[3];
- }
-FPREG;
-
-typedef struct tagFPA11
- {
- FPREG fpreg[8]; /* 8 floating point registers */
- unsigned int fpsr; /* floating point status register */
- unsigned int fpcr; /* floating point control register */
- unsigned char fType[8]; /* type of floating point value held in
- floating point registers. */
- int initflag; /* NWFPE initialization flag. */
- }
-FPA11;
-
/* The following variables are used to determine the version of the
underlying GNU/Linux operating system. Examples:
@@ -104,132 +79,6 @@ get_thread_id (ptid_t ptid)
}
#define GET_THREAD_ID(PTID) get_thread_id ((PTID));
-static void
-fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- mem[0] = fpa11->fpreg[fn].fSingle;
- mem[1] = 0;
- mem[2] = 0;
- regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- mem[0] = fpa11->fpreg[fn].fDouble[1];
- mem[1] = fpa11->fpreg[fn].fDouble[0];
- mem[2] = 0;
- regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_none (unsigned int fn)
-{
- unsigned int mem[3] =
- {0, 0, 0};
-
- regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */
- mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */
- mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */
- regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_register (int regno, FPA11 * fpa11)
-{
- int fn = regno - ARM_F0_REGNUM;
-
- switch (fpa11->fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, fpa11);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, fpa11);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, fpa11);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
-}
-
-static void
-store_nwfpe_single (unsigned int fn, FPA11 *fpa11)
-{
- unsigned int mem[3];
-
- regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
- (char *) &mem[0]);
- fpa11->fpreg[fn].fSingle = mem[0];
- fpa11->fType[fn] = typeSingle;
-}
-
-static void
-store_nwfpe_double (unsigned int fn, FPA11 *fpa11)
-{
- unsigned int mem[3];
-
- regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
- (char *) &mem[0]);
- fpa11->fpreg[fn].fDouble[1] = mem[0];
- fpa11->fpreg[fn].fDouble[0] = mem[1];
- fpa11->fType[fn] = typeDouble;
-}
-
-void
-store_nwfpe_extended (unsigned int fn, FPA11 *fpa11)
-{
- unsigned int mem[3];
-
- regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
- (char *) &mem[0]);
- fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */
- fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */
- fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */
- fpa11->fType[fn] = typeDouble;
-}
-
-void
-store_nwfpe_register (int regno, FPA11 * fpa11)
-{
- if (register_cached (regno))
- {
- unsigned int fn = regno - ARM_F0_REGNUM;
- switch (fpa11->fType[fn])
- {
- case typeSingle:
- store_nwfpe_single (fn, fpa11);
- break;
-
- case typeDouble:
- store_nwfpe_double (fn, fpa11);
- break;
-
- case typeExtended:
- store_nwfpe_extended (fn, fpa11);
- break;
- }
- }
-}
-
-
/* Get the value of a particular register from the floating point
state of the process and store it into regcache. */
@@ -237,13 +86,13 @@ static void
fetch_fpregister (int regno)
{
int ret, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to fetch floating point register."));
@@ -252,31 +101,12 @@ fetch_fpregister (int regno)
/* Fetch fpsr. */
if (ARM_FPS_REGNUM == regno)
- regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
+ regcache_raw_supply (current_regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point register. */
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
- {
- int fn = regno - ARM_F0_REGNUM;
-
- switch (fp.fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, &fp);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, &fp);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, &fp);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
- }
+ supply_nwfpe_register (current_regcache, regno, fp);
}
/* Get the whole floating point state of the process and store it
@@ -286,13 +116,13 @@ static void
fetch_fpregs (void)
{
int ret, regno, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
@@ -300,31 +130,12 @@ fetch_fpregs (void)
}
/* Fetch fpsr. */
- regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
+ regcache_raw_supply (current_regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
- {
- int fn = regno - ARM_F0_REGNUM;
-
- switch (fp.fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, &fp);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, &fp);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, &fp);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
- }
+ supply_nwfpe_register (current_regcache, regno, fp);
}
/* Save a particular register into the floating point state of the
@@ -334,13 +145,13 @@ static void
store_fpregister (int regno)
{
int ret, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
@@ -349,15 +160,14 @@ store_fpregister (int regno)
/* Store fpsr. */
if (ARM_FPS_REGNUM == regno && register_cached (ARM_FPS_REGNUM))
- regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
+ regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Store the floating point register. */
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
- {
- store_nwfpe_register (regno, &fp);
- }
+ collect_nwfpe_register (current_regcache, regno, fp);
- ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to store floating point register."));
@@ -372,13 +182,13 @@ static void
store_fpregs (void)
{
int ret, regno, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
@@ -387,15 +197,15 @@ store_fpregs (void)
/* Store fpsr. */
if (register_cached (ARM_FPS_REGNUM))
- regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
+ regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Store the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
- {
- fetch_nwfpe_register (regno, &fp);
- }
+ if (register_cached (regno))
+ collect_nwfpe_register (current_regcache, regno, fp);
- ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
{
warning (_("Unable to store floating point registers."));
@@ -597,83 +407,25 @@ arm_linux_store_inferior_registers (int regno)
}
}
-/* Fill register regno (if it is a general-purpose register) in
- *gregsetp with the appropriate value from GDB's register array.
- If regno is -1, do this for all registers. */
+/* Wrapper functions for the standard regset handling, used by
+ thread debugging. */
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
- if (-1 == regno)
- {
- int regnum;
- for (regnum = ARM_A1_REGNUM; regnum <= ARM_PC_REGNUM; regnum++)
- regcache_raw_collect (current_regcache, regnum,
- (char *) &(*gregsetp)[regnum]);
- }
- else if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
- regcache_raw_collect (current_regcache, regno,
- (char *) &(*gregsetp)[regno]);
-
- if (ARM_PS_REGNUM == regno || -1 == regno)
- {
- if (arm_apcs_32)
- regcache_raw_collect (current_regcache, ARM_PS_REGNUM,
- (char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
- else
- regcache_raw_collect (current_regcache, ARM_PC_REGNUM,
- (char *) &(*gregsetp)[ARM_PC_REGNUM]);
- }
+ arm_linux_collect_gregset (NULL, current_regcache, regno, gregsetp, 0);
}
-/* Fill GDB's register array with the general-purpose register values
- in *gregsetp. */
-
void
supply_gregset (gdb_gregset_t *gregsetp)
{
- int regno, reg_pc;
-
- for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
- regcache_raw_supply (current_regcache, regno,
- (char *) &(*gregsetp)[regno]);
-
- if (arm_apcs_32)
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
- (char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
- else
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
- (char *) &(*gregsetp)[ARM_PC_REGNUM]);
-
- reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[ARM_PC_REGNUM]);
- regcache_raw_supply (current_regcache, ARM_PC_REGNUM, (char *) &reg_pc);
+ arm_linux_supply_gregset (NULL, current_regcache, -1, gregsetp, 0);
}
-/* Fill register regno (if it is a floating-point register) in
- *fpregsetp with the appropriate value from GDB's register array.
- If regno is -1, do this for all registers. */
-
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
- FPA11 *fp = (FPA11 *) fpregsetp;
-
- if (-1 == regno)
- {
- int regnum;
- for (regnum = ARM_F0_REGNUM; regnum <= ARM_F7_REGNUM; regnum++)
- store_nwfpe_register (regnum, fp);
- }
- else if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
- {
- store_nwfpe_register (regno, fp);
- return;
- }
-
- /* Store fpsr. */
- if (ARM_FPS_REGNUM == regno || -1 == regno)
- regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
- (char *) &fp->fpsr);
+ arm_linux_collect_nwfpe (NULL, current_regcache, regno, fpregsetp, 0);
}
/* Fill GDB's register array with the floating-point register values
@@ -682,17 +434,7 @@ fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
void
supply_fpregset (gdb_fpregset_t *fpregsetp)
{
- int regno;
- FPA11 *fp = (FPA11 *) fpregsetp;
-
- /* Fetch fpsr. */
- regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp->fpsr);
-
- /* Fetch the floating point registers. */
- for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
- {
- fetch_nwfpe_register (regno, fp);
- }
+ arm_linux_supply_nwfpe (NULL, current_regcache, -1, fpregsetp, 0);
}
int
generated by cgit v1.1 at 2024-12-20 00:59:43 +0000