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| author | Sandra Loosemore <sandra@codesourcery.com> | 2015-08-03 11:39:52 -0700 |
|---|---|---|
| committer | Sandra Loosemore <sandra@codesourcery.com> | 2015-08-03 11:39:52 -0700 |
| commit | af60a1ef46d2c4aca22868b0f2819234b949018e (patch) | |
| tree | f10910f0faea7fcb62be21c72260f520a82712c5 /gdb/nios2-tdep.h | |
| parent | cb1c8103f13d413e05ca6e61e21b56bba3baae74 (diff) | |
| download | binutils-gdb-af60a1ef46d2c4aca22868b0f2819234b949018e.tar.gz | |
Nios II R2 support for GDB.
2015-08-03 Sandra Loosemore <sandra@codesourcery.com>
gdb/
* nios2-tdep.h: Include opcode/nios2.h here.
(NIOS2_CDX_OPCODE_SIZE): New.
(struct gdbarch_tdep): Add OP parameter to syscall_next_pc.
* nios2-tdep.c: Don't include opcode/nios2.h here.
(nios2_fetch_insn): For R2, try reading 2-byte instruction if
4-byte read fails.
(nios2_match_add, nios2_match_sub): Add cases for R2 encodings.
(nios2_match_addi, nios2_match_orhi): Likewise.
(nios2_match_stw, nios2_match_ldw): Likewise.
(nios2_match_rdctl): Likewise.
(nios2_match_stwm, nios2_match_ldwm): New.
(nios2_match_branch): Add cases for R2 encodings.
(nios2_match_jmpi, nios2_match_calli): Likewise.
(nios2_match_jmpr, nios2_match_callr): Likewise.
(nios2_match_break, nios2_match_trap): Likewise.
(nios2_in_epilogue_p): Add R2 support.
(nios2_analyze_prologue): Update comments. Recognize R2 CDX
prologues.
(nios2_breakpoint_from_pc): Handle R2 instructions.
(nios2_get_next_pc): Likewise. Adjust call to
tdep->syscall_next_pc.
* nios2-linux-tdep.c (nios2_r1_linux_rt_sigreturn_tramp_frame):
Renamed from nios2_linux_rt_sigreturn_tramp_frame. Use
instruction field macros instead of literal hex values.
(nios2_r2_linux_rt_sigreturn_tramp_frame): New.
(nios2_linux_syscall_next_pc): Adjust signature to pass OP.
Use size field from OP instead of assuming all instructions
are the same size.
(nios2_linux_init_abi): Register appropriate unwinder for mach.
gdb/gdbserver/
* linux-nios2-low.c (NIOS2_BREAKPOINT): Conditionalize for
arch variant.
(CDX_BREAKPOINT): Define for R2.
(nios2_breakpoint_at): Check for CDX_BREAKPOINT when R2.
(the_low_target): Add comments.
Diffstat (limited to 'gdb/nios2-tdep.h')
| -rw-r--r-- | gdb/nios2-tdep.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gdb/nios2-tdep.h b/gdb/nios2-tdep.h index af36c4187e9..1a4e5ab3ff2 100644 --- a/gdb/nios2-tdep.h +++ b/gdb/nios2-tdep.h @@ -20,6 +20,9 @@ #ifndef NIOS2_TDEP_H #define NIOS2_TDEP_H +/* Nios II ISA specific encodings and macros. */ +#include "opcode/nios2.h" + /* Registers. */ #define NIOS2_Z_REGNUM 0 /* Zero */ #define NIOS2_R2_REGNUM 2 /* used for return value */ @@ -61,13 +64,15 @@ /* Size of an instruction, in bytes. */ #define NIOS2_OPCODE_SIZE 4 +#define NIOS2_CDX_OPCODE_SIZE 2 /* Target-dependent structure in gdbarch. */ struct gdbarch_tdep { /* Assumes FRAME is stopped at a syscall (trap) instruction; returns the expected next PC. */ - CORE_ADDR (*syscall_next_pc) (struct frame_info *frame); + CORE_ADDR (*syscall_next_pc) (struct frame_info *frame, + const struct nios2_opcode *op); /* Offset to PC value in jump buffer. If this is negative, longjmp support will be disabled. */ |