2005-01-13 Michael Snyder <msnyder@redhat.com>
* mips-linux-tdep.c: Whitespace tweaks.
This commit is contained in:
Michael Snyder
parent
4ac6917f4d
commit
295093a415
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@ -1,3 +1,7 @@
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2005-01-17 Michael Snyder <msnyder@redhat.com>
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* mips-linux-tdep.c: Whitespace tweaks.
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2005-01-17 Corinna Vinschen <vinschen@redhat.com>
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* infcmd.c (attach_command): Call CLEAR_SOLIB if available.
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@ -64,9 +64,10 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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#define EF_SIZE 180
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/* Figure out where the longjmp will land.
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We expect the first arg to be a pointer to the jmp_buf structure from
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which we extract the pc (MIPS_LINUX_JB_PC) that we will land at. The pc
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is copied into PC. This routine returns 1 on success. */
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We expect the first arg to be a pointer to the jmp_buf structure
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from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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at. The pc is copied into PC. This routine returns 1 on
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success. */
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#define MIPS_LINUX_JB_ELEMENT_SIZE 4
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#define MIPS_LINUX_JB_PC 0
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@ -131,7 +132,9 @@ supply_gregset (elf_gregset_t *gregsetp)
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/* Fill inaccessible registers with zero. */
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regcache_raw_supply (current_regcache, MIPS_UNUSED_REGNUM, zerobuf);
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for (regi = MIPS_FIRST_EMBED_REGNUM; regi < MIPS_LAST_EMBED_REGNUM; regi++)
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for (regi = MIPS_FIRST_EMBED_REGNUM;
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regi < MIPS_LAST_EMBED_REGNUM;
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regi++)
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regcache_raw_supply (current_regcache, regi, zerobuf);
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}
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@ -206,7 +209,7 @@ supply_fpregset (elf_fpregset_t *fpregsetp)
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mips_regnum (current_gdbarch)->fp_control_status,
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(char *)(*fpregsetp + 32));
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->fp_implementation_revision,
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zerobuf);
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@ -236,7 +239,8 @@ fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
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for (regi = 0; regi < 32; regi++)
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fill_fpregset (fpregsetp, FP0_REGNUM + regi);
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fill_fpregset(fpregsetp, mips_regnum (current_gdbarch)->fp_control_status);
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fill_fpregset (fpregsetp,
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mips_regnum (current_gdbarch)->fp_control_status);
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}
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}
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@ -278,20 +282,22 @@ mips_linux_register_addr (int regno, CORE_ADDR blockend)
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/* Fetch (and possibly build) an appropriate link_map_offsets
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structure for native GNU/Linux MIPS targets using the struct offsets
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defined in link.h (but without actual reference to that file).
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structure for native GNU/Linux MIPS targets using the struct
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offsets defined in link.h (but without actual reference to that
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file).
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This makes it possible to access GNU/Linux MIPS shared libraries from a
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GDB that was built on a different host platform (for cross debugging). */
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This makes it possible to access GNU/Linux MIPS shared libraries
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from a GDB that was built on a different host platform (for cross
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debugging). */
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static struct link_map_offsets *
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mips_linux_svr4_fetch_link_map_offsets (void)
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{
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{
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static struct link_map_offsets lmo;
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static struct link_map_offsets *lmp = NULL;
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if (lmp == NULL)
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{
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{
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lmp = &lmo;
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lmo.r_debug_size = 8; /* The actual size is 20 bytes, but
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@ -351,9 +357,10 @@ typedef mips64_elf_fpreg_t mips64_elf_fpregset_t[MIPS64_ELF_NFPREG];
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#define MIPS64_EF_SIZE 304
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/* Figure out where the longjmp will land.
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We expect the first arg to be a pointer to the jmp_buf structure from
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which we extract the pc (MIPS_LINUX_JB_PC) that we will land at. The pc
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is copied into PC. This routine returns 1 on success. */
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We expect the first arg to be a pointer to the jmp_buf structure
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from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
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at. The pc is copied into PC. This routine returns 1 on
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success. */
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/* Details about jmp_buf. */
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@ -392,23 +399,30 @@ mips64_supply_gregset (mips64_elf_gregset_t *gregsetp)
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regcache_raw_supply (current_regcache, (regi - MIPS64_EF_REG0),
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(char *)(regp + regi));
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regcache_raw_supply (current_regcache, mips_regnum (current_gdbarch)->lo,
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(char *)(regp + MIPS64_EF_LO));
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regcache_raw_supply (current_regcache, mips_regnum (current_gdbarch)->hi,
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(char *)(regp + MIPS64_EF_HI));
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->lo,
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(char *) (regp + MIPS64_EF_LO));
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->hi,
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(char *) (regp + MIPS64_EF_HI));
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regcache_raw_supply (current_regcache, mips_regnum (current_gdbarch)->pc,
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(char *)(regp + MIPS64_EF_CP0_EPC));
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regcache_raw_supply (current_regcache, mips_regnum (current_gdbarch)->badvaddr,
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(char *)(regp + MIPS64_EF_CP0_BADVADDR));
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->pc,
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(char *) (regp + MIPS64_EF_CP0_EPC));
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->badvaddr,
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(char *) (regp + MIPS64_EF_CP0_BADVADDR));
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regcache_raw_supply (current_regcache, MIPS_PS_REGNUM,
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(char *)(regp + MIPS64_EF_CP0_STATUS));
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regcache_raw_supply (current_regcache, mips_regnum (current_gdbarch)->cause,
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(char *)(regp + MIPS64_EF_CP0_CAUSE));
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(char *) (regp + MIPS64_EF_CP0_STATUS));
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->cause,
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(char *) (regp + MIPS64_EF_CP0_CAUSE));
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/* Fill inaccessible registers with zero. */
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regcache_raw_supply (current_regcache, MIPS_UNUSED_REGNUM, zerobuf);
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for (regi = MIPS_FIRST_EMBED_REGNUM; regi < MIPS_LAST_EMBED_REGNUM; regi++)
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for (regi = MIPS_FIRST_EMBED_REGNUM;
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regi < MIPS_LAST_EMBED_REGNUM;
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regi++)
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regcache_raw_supply (current_regcache, regi, zerobuf);
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}
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@ -429,9 +443,11 @@ mips64_fill_gregset (mips64_elf_gregset_t *gregsetp, int regno)
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mips64_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->lo);
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mips64_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->hi);
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mips64_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->pc);
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mips64_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->badvaddr);
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mips64_fill_gregset (gregsetp,
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mips_regnum (current_gdbarch)->badvaddr);
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mips64_fill_gregset (gregsetp, MIPS_PS_REGNUM);
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mips64_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->cause);
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mips64_fill_gregset (gregsetp,
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mips_regnum (current_gdbarch)->cause);
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return;
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}
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@ -483,7 +499,7 @@ mips64_supply_fpregset (mips64_elf_fpregset_t *fpregsetp)
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mips_regnum (current_gdbarch)->fp_control_status,
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(char *)(*fpregsetp + 32));
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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/* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
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regcache_raw_supply (current_regcache,
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mips_regnum (current_gdbarch)->fp_implementation_revision,
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zerobuf);
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@ -593,7 +609,8 @@ fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
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}
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else if (core_reg_size == sizeof (fpregset64))
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{
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memcpy ((char *) &fpregset64, core_reg_sect, sizeof (fpregset64));
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memcpy ((char *) &fpregset64, core_reg_sect,
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sizeof (fpregset64));
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mips64_supply_fpregset (&fpregset64);
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}
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else
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@ -616,20 +633,22 @@ static struct core_fns regset_core_fns =
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};
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/* Fetch (and possibly build) an appropriate link_map_offsets
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structure for native GNU/Linux MIPS targets using the struct offsets
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defined in link.h (but without actual reference to that file).
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structure for native GNU/Linux MIPS targets using the struct
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offsets defined in link.h (but without actual reference to that
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file).
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This makes it possible to access GNU/Linux MIPS shared libraries from a
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GDB that was built on a different host platform (for cross debugging). */
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This makes it possible to access GNU/Linux MIPS shared libraries
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from a GDB that was built on a different host platform (for cross
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debugging). */
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static struct link_map_offsets *
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mips64_linux_svr4_fetch_link_map_offsets (void)
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{
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{
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static struct link_map_offsets lmo;
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static struct link_map_offsets *lmp = NULL;
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if (lmp == NULL)
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{
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{
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lmp = &lmo;
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lmo.r_debug_size = 16; /* The actual size is 40 bytes, but
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@ -655,8 +674,8 @@ mips64_linux_svr4_fetch_link_map_offsets (void)
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return lmp;
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}
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/* Handle for obtaining pointer to the current register_addr() function
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for a given architecture. */
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/* Handle for obtaining pointer to the current register_addr()
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function for a given architecture. */
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static struct gdbarch_data *register_addr_data;
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CORE_ADDR
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@ -672,9 +691,11 @@ register_addr (int regno, CORE_ADDR blockend)
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static void
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set_mips_linux_register_addr (struct gdbarch *gdbarch,
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CORE_ADDR (*register_addr_ptr) (int, CORE_ADDR))
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CORE_ADDR (*register_addr_ptr) (int,
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CORE_ADDR))
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{
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deprecated_set_gdbarch_data (gdbarch, register_addr_data, register_addr_ptr);
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deprecated_set_gdbarch_data (gdbarch, register_addr_data,
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register_addr_ptr);
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}
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static void *
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@ -683,17 +704,17 @@ init_register_addr_data (struct gdbarch *gdbarch)
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return 0;
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}
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/* Check the code at PC for a dynamic linker lazy resolution stub. Because
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they aren't in the .plt section, we pattern-match on the code generated
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by GNU ld. They look like this:
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/* Check the code at PC for a dynamic linker lazy resolution stub.
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Because they aren't in the .plt section, we pattern-match on the
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code generated by GNU ld. They look like this:
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lw t9,0x8010(gp)
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addu t7,ra
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jalr t9,ra
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addiu t8,zero,INDEX
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(with the appropriate doubleword instructions for N64). Also return the
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dynamic symbol index used in the last instruction. */
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(with the appropriate doubleword instructions for N64). Also
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return the dynamic symbol index used in the last instruction. */
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static int
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mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
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@ -739,7 +760,7 @@ mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
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if (insn != 0x03e07821)
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return 0;
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}
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insn = extract_unsigned_integer (p + 8, 4);
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/* jalr t9,ra */
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if (insn != 0x0320f809)
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@ -762,19 +783,19 @@ mips_linux_in_dynsym_stub (CORE_ADDR pc, char *name)
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return (insn & 0xffff);
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}
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/* Return non-zero iff PC belongs to the dynamic linker resolution code
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or to a stub. */
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/* Return non-zero iff PC belongs to the dynamic linker resolution
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code or to a stub. */
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int
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mips_linux_in_dynsym_resolve_code (CORE_ADDR pc)
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{
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/* Check whether PC is in the dynamic linker. This also checks whether
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it is in the .plt section, which MIPS does not use. */
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/* Check whether PC is in the dynamic linker. This also checks
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whether it is in the .plt section, which MIPS does not use. */
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if (in_solib_dynsym_resolve_code (pc))
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return 1;
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/* Pattern match for the stub. It would be nice if there were a more
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efficient way to avoid this check. */
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/* Pattern match for the stub. It would be nice if there were a
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more efficient way to avoid this check. */
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if (mips_linux_in_dynsym_stub (pc, NULL))
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return 1;
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@ -798,10 +819,10 @@ mips_linux_skip_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
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resolver = lookup_minimal_symbol ("__dl_runtime_resolve", NULL, NULL);
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if (resolver && SYMBOL_VALUE_ADDRESS (resolver) == pc)
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return frame_pc_unwind (get_current_frame ());
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return frame_pc_unwind (get_current_frame ());
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return 0;
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}
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}
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/* Signal trampoline support. There are four supported layouts for a
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signal frame: o32 sigframe, o32 rt_sigframe, n32 rt_sigframe, and
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@ -868,7 +889,9 @@ static const struct tramp_frame mips_linux_n32_rt_sigframe = {
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static const struct tramp_frame mips_linux_n64_rt_sigframe = {
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SIGTRAMP_FRAME,
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4,
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{ MIPS_INST_LI_V0_N64_RT_SIGRETURN, MIPS_INST_SYSCALL, TRAMP_SENTINEL_INSN },
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{ MIPS_INST_LI_V0_N64_RT_SIGRETURN,
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MIPS_INST_SYSCALL,
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TRAMP_SENTINEL_INSN },
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mips_linux_n32n64_sigframe_init
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};
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@ -958,11 +981,11 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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sigcontext_base += SIGFRAME_SIGCONTEXT_OFFSET;
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else
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sigcontext_base += RTSIGFRAME_SIGCONTEXT_OFFSET;
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/* I'm not proud of this hack. Eventually we will have the infrastructure
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to indicate the size of saved registers on a per-frame basis, but
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right now we don't; the kernel saves eight bytes but we only want
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four. */
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/* I'm not proud of this hack. Eventually we will have the
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infrastructure to indicate the size of saved registers on a
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per-frame basis, but right now we don't; the kernel saves eight
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bytes but we only want four. */
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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sigcontext_base += 4;
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@ -972,7 +995,8 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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#endif
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for (ireg = 1; ireg < 32; ireg++)
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trad_frame_set_reg_addr (this_cache, ireg + MIPS_ZERO_REGNUM + NUM_REGS,
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trad_frame_set_reg_addr (this_cache,
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ireg + MIPS_ZERO_REGNUM + NUM_REGS,
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sigcontext_base + SIGCONTEXT_REGS
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+ ireg * SIGCONTEXT_REG_SIZE);
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@ -984,7 +1008,8 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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trad_frame_set_reg_addr (this_cache, regs->pc + NUM_REGS,
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sigcontext_base + SIGCONTEXT_PC);
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trad_frame_set_reg_addr (this_cache, regs->fp_control_status + NUM_REGS,
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trad_frame_set_reg_addr (this_cache,
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regs->fp_control_status + NUM_REGS,
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sigcontext_base + SIGCONTEXT_FPCSR);
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trad_frame_set_reg_addr (this_cache, regs->hi + NUM_REGS,
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sigcontext_base + SIGCONTEXT_HI);
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@ -997,7 +1022,8 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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/* Choice of the bottom of the sigframe is somewhat arbitrary. */
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trad_frame_set_id (this_cache,
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frame_id_build (func - SIGFRAME_CODE_OFFSET, func));
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frame_id_build (func - SIGFRAME_CODE_OFFSET,
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func));
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}
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/* *INDENT-OFF* */
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@ -1017,7 +1043,7 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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struct sigcontext uc_mcontext;
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sigset_t uc_sigmask; [ mask last for extensibility ]
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};
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struct rt_sigframe_n32 {
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u32 rs_ass[4]; [ argument save space for o32 ]
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u32 rs_code[2]; [ signal trampoline ]
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@ -1072,7 +1098,7 @@ mips_linux_o32_sigframe_init (const struct tramp_frame *self,
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#define N64_SIGCONTEXT_BADVADDR (67 * 8 + 5 * 4)
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#define N64_SIGCONTEXT_REG_SIZE 8
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static void
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mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
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struct frame_info *next_frame,
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@ -1087,14 +1113,15 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
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sigcontext_base += N32_SIGFRAME_SIGCONTEXT_OFFSET;
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else
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sigcontext_base += N64_SIGFRAME_SIGCONTEXT_OFFSET;
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#if 0
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trad_frame_set_reg_addr (this_cache, ORIG_ZERO_REGNUM + NUM_REGS,
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sigcontext_base + N64_SIGCONTEXT_REGS);
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#endif
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for (ireg = 1; ireg < 32; ireg++)
|
||||
trad_frame_set_reg_addr (this_cache, ireg + MIPS_ZERO_REGNUM + NUM_REGS,
|
||||
trad_frame_set_reg_addr (this_cache,
|
||||
ireg + MIPS_ZERO_REGNUM + NUM_REGS,
|
||||
sigcontext_base + N64_SIGCONTEXT_REGS
|
||||
+ ireg * N64_SIGCONTEXT_REG_SIZE);
|
||||
|
||||
|
|
@ -1106,7 +1133,8 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
|||
trad_frame_set_reg_addr (this_cache, regs->pc + NUM_REGS,
|
||||
sigcontext_base + N64_SIGCONTEXT_PC);
|
||||
|
||||
trad_frame_set_reg_addr (this_cache, regs->fp_control_status + NUM_REGS,
|
||||
trad_frame_set_reg_addr (this_cache,
|
||||
regs->fp_control_status + NUM_REGS,
|
||||
sigcontext_base + N64_SIGCONTEXT_FPCSR);
|
||||
trad_frame_set_reg_addr (this_cache, regs->hi + NUM_REGS,
|
||||
sigcontext_base + N64_SIGCONTEXT_HI);
|
||||
|
|
@ -1119,13 +1147,15 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
|
|||
|
||||
/* Choice of the bottom of the sigframe is somewhat arbitrary. */
|
||||
trad_frame_set_id (this_cache,
|
||||
frame_id_build (func - SIGFRAME_CODE_OFFSET, func));
|
||||
frame_id_build (func - SIGFRAME_CODE_OFFSET,
|
||||
func));
|
||||
}
|
||||
|
||||
/* Initialize one of the GNU/Linux OS ABIs. */
|
||||
|
||||
static void
|
||||
mips_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
mips_linux_init_abi (struct gdbarch_info info,
|
||||
struct gdbarch *gdbarch)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
enum mips_abi abi = mips_abi (gdbarch);
|
||||
|
|
@ -1179,7 +1209,8 @@ _initialize_mips_linux_tdep (void)
|
|||
arch_info != NULL;
|
||||
arch_info = arch_info->next)
|
||||
{
|
||||
gdbarch_register_osabi (bfd_arch_mips, arch_info->mach, GDB_OSABI_LINUX,
|
||||
gdbarch_register_osabi (bfd_arch_mips, arch_info->mach,
|
||||
GDB_OSABI_LINUX,
|
||||
mips_linux_init_abi);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue