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authorHans-Peter Nilsson <hp@axis.com>2009-01-18 22:17:03 +0000
committerHans-Peter Nilsson <hp@axis.com>2009-01-18 22:17:03 +0000
commitc10b3605497aa9c927f6399d23f9f5b2a32b8029 (patch)
tree35d3e53aa7e76a75dae62e81ae90356f9264f7e5 /sim/cris
parentaefc706471ace00a164b5a65717d5a0932d2eaf0 (diff)
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* cris/sim-if.c: Include errno.h.
(cris_start_address, cris_program_offset): New variables. (OPTION_CRIS_PROGRAM_OFFSET, OPTION_CRIS_STARTADDR): New option enums. (cris_options): New options --cris-program-offset and --cris-start-address. (cris_option_handler): Handle new options. (cris_program_offset_write, cris_set_section_offset_iterator) (cris_offset_sections, cris_offset_sections): New functions. (sim_load): Use cris_program_offset_write as function argument to cris_load_elf_file, not sim_write. (struct offsetinfo): New struct. (cris_handle_interpreter): Fix typo in comment. (sim_open): Call cris_offset_sections as soon as the bfd of the infile is available. Gate bfd validity checks on abfd non-NULL. (sim_create_inferior): Let cris_start_address when != -1 override other start-address choices.
Diffstat (limited to 'sim/cris')
-rw-r--r--sim/cris/sim-if.c127
1 files changed, 122 insertions, 5 deletions
diff --git a/sim/cris/sim-if.c b/sim/cris/sim-if.c
index 9f26abf..9135ccb 100644
--- a/sim/cris/sim-if.c
+++ b/sim/cris/sim-if.c
@@ -29,6 +29,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
+#include <errno.h>
#include "sim-options.h"
#include "dis-asm.h"
@@ -67,6 +68,15 @@ static char cris_bare_iron = 0;
/* Whether 0x9000000xx have simulator-specific meanings. */
char cris_have_900000xxif = 0;
+/* Used to optionally override the default start address of the
+ simulation. */
+static USI cris_start_address = 0xffffffffu;
+
+/* Used to optionally add offsets to the loaded image and its start
+ address. (Not used for the interpreter of dynamically loaded
+ programs or the DSO:s.) */
+static int cris_program_offset = 0;
+
/* What to do when we face a more or less unknown syscall. */
enum cris_unknown_syscall_action_type cris_unknown_syscall_action
= CRIS_USYSC_MSG_STOP;
@@ -80,6 +90,8 @@ typedef enum {
OPTION_CRIS_STATS = OPTION_START,
OPTION_CRIS_TRACE,
OPTION_CRIS_NAKED,
+ OPTION_CRIS_PROGRAM_OFFSET,
+ OPTION_CRIS_STARTADDR,
OPTION_CRIS_900000XXIF,
OPTION_CRIS_UNKNOWN_SYSCALL
} CRIS_OPTIONS;
@@ -104,6 +116,14 @@ static const OPTION cris_options[] =
OPTION_CRIS_UNKNOWN_SYSCALL},
'\0', "stop|enosys|enosys-quiet", "Action at an unknown system call",
cris_option_handler, NULL },
+ { {"cris-program-offset", required_argument, NULL,
+ OPTION_CRIS_PROGRAM_OFFSET},
+ '\0', "OFFSET",
+ "Offset image addresses and default start address of a program",
+ cris_option_handler },
+ { {"cris-start-address", required_argument, NULL, OPTION_CRIS_STARTADDR},
+ '\0', "ADDRESS", "Set start address",
+ cris_option_handler },
{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL, NULL }
};
@@ -130,6 +150,7 @@ cris_option_handler (SIM_DESC sd, sim_cpu *cpu ATTRIBUTE_UNUSED, int opt,
to the module-specific CPU data when we store things in the
cpu-specific structure. */
char *tracefp = STATE_TRACE_FLAGS (sd);
+ char *chp = arg;
switch ((CRIS_OPTIONS) opt)
{
@@ -173,6 +194,30 @@ cris_option_handler (SIM_DESC sd, sim_cpu *cpu ATTRIBUTE_UNUSED, int opt,
cris_have_900000xxif = 1;
break;
+ case OPTION_CRIS_STARTADDR:
+ errno = 0;
+ cris_start_address = (USI) strtoul (chp, &chp, 0);
+
+ if (errno != 0 || *chp != 0)
+ {
+ sim_io_eprintf (sd, "Invalid option `--cris-start-address=%s'\n",
+ arg);
+ return SIM_RC_FAIL;
+ }
+ break;
+
+ case OPTION_CRIS_PROGRAM_OFFSET:
+ errno = 0;
+ cris_program_offset = (int) strtol (chp, &chp, 0);
+
+ if (errno != 0 || *chp != 0)
+ {
+ sim_io_eprintf (sd, "Invalid option `--cris-program-offset=%s'\n",
+ arg);
+ return SIM_RC_FAIL;
+ }
+ break;
+
case OPTION_CRIS_UNKNOWN_SYSCALL:
if (strcmp (arg, "enosys") == 0)
cris_unknown_syscall_action = CRIS_USYSC_MSG_ENOSYS;
@@ -284,6 +329,16 @@ cris_load_elf_file (SIM_DESC sd, struct bfd *abfd, sim_write_fn do_write)
return TRUE;
}
+/* Helper for sim_load (needed just for ELF files): like sim_write,
+ but offset load at cris_program_offset offset. */
+
+static int
+cris_program_offset_write (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf,
+ int length)
+{
+ return sim_write (sd, mem + cris_program_offset, buf, length);
+}
+
/* Replacement for ../common/sim-hload.c:sim_load, so we can treat ELF
files differently. */
@@ -316,7 +371,7 @@ sim_load (SIM_DESC sd, char *prog_name, struct bfd *prog_bfd,
return SIM_RC_OK;
}
- return cris_load_elf_file (sd, prog_bfd, sim_write)
+ return cris_load_elf_file (sd, prog_bfd, cris_program_offset_write)
? SIM_RC_OK : SIM_RC_FAIL;
}
@@ -331,6 +386,60 @@ free_state (SIM_DESC sd)
sim_state_free (sd);
}
+/* Helper struct for cris_set_section_offset_iterator. */
+
+struct offsetinfo
+{
+ SIM_DESC sd;
+ int offset;
+};
+
+/* BFD section iterator to offset the LMA and VMA. */
+
+static void
+cris_set_section_offset_iterator (bfd *abfd, asection *s, void *vp)
+{
+ struct offsetinfo *p = (struct offsetinfo *) vp;
+ SIM_DESC sd = p->sd;
+ int offset = p->offset;
+
+ if ((bfd_get_section_flags (abfd, s) & SEC_ALLOC))
+ {
+ bfd_vma vma = bfd_get_section_vma (abfd, s);
+
+ bfd_set_section_vma (abfd, s, vma + offset);
+ }
+
+ /* This seems clumsy and inaccurate, but let's stick to doing it the
+ same way as sim_analyze_program for consistency. */
+ if (strcmp (bfd_get_section_name (abfd, s), ".text") == 0)
+ STATE_TEXT_START (sd) = bfd_get_section_vma (abfd, s);
+}
+
+/* Adjust the start-address, LMA and VMA of a SD. Must be called
+ after sim_analyze_program. */
+
+static void
+cris_offset_sections (SIM_DESC sd, int offset)
+{
+ bfd_boolean ret;
+ struct bfd *abfd = STATE_PROG_BFD (sd);
+ asection *text;
+ struct offsetinfo oi;
+
+ /* Only happens for usage error. */
+ if (abfd == NULL)
+ return;
+
+ oi.sd = sd;
+ oi.offset = offset;
+
+ bfd_map_over_sections (abfd, cris_set_section_offset_iterator, &oi);
+ ret = bfd_set_start_address (abfd, bfd_get_start_address (abfd) + offset);
+
+ STATE_START_ADDR (sd) = bfd_get_start_address (abfd);
+}
+
/* BFD section iterator to find the highest and lowest allocated and
non-allocated section addresses (plus one). */
@@ -520,7 +629,7 @@ cris_handle_interpreter (SIM_DESC sd, struct bfd *abfd)
if (ibfd == NULL)
goto interpname_failed;
- /* The interpreter is at leat something readable to BFD; make
+ /* The interpreter is at least something readable to BFD; make
sure it's an ELF non-archive file. */
if (!bfd_check_format (ibfd, bfd_object)
|| bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
@@ -688,7 +797,12 @@ sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd,
if (abfd == NULL)
abfd = STATE_PROG_BFD (sd);
- if (bfd_get_arch (abfd) == bfd_arch_unknown)
+ /* Adjust the addresses of the program at this point. Unfortunately
+ this does not affect ELF program headers, so we have to handle
+ that separately. */
+ cris_offset_sections (sd, cris_program_offset);
+
+ if (abfd != NULL && bfd_get_arch (abfd) == bfd_arch_unknown)
{
if (STATE_PROG_ARGV (sd) != NULL)
sim_io_eprintf (sd, "%s: `%s' is not a CRIS program\n",
@@ -963,8 +1077,11 @@ sim_create_inferior (SIM_DESC sd, struct bfd *abfd,
SIM_ADDR addr;
if (sd != NULL)
- addr = interp_start_addr != 0
- ? interp_start_addr : bfd_get_start_address (abfd);
+ addr = cris_start_address != (SIM_ADDR) -1
+ ? cris_start_address
+ : (interp_start_addr != 0
+ ? interp_start_addr
+ : bfd_get_start_address (abfd));
else
addr = 0;
sim_pc_set (current_cpu, addr);