diff options
Diffstat (limited to 'gdb/aarch64-linux-tdep.c')
| -rw-r--r-- | gdb/aarch64-linux-tdep.c | 73 |
1 files changed, 68 insertions, 5 deletions
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c index 1f3e888e40..e6be93ded2 100644 --- a/gdb/aarch64-linux-tdep.c +++ b/gdb/aarch64-linux-tdep.c @@ -131,13 +131,13 @@ ucontext.uc_mcontext. */ /* These magic numbers need to reflect the layout of the kernel - defined struct rt_sigframe and ucontext. */ + defined struct rt_sigframe and ucontext in LP64 mode. */ #define AARCH64_SIGCONTEXT_REG_SIZE 8 #define AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET 128 #define AARCH64_UCONTEXT_SIGCONTEXT_OFFSET 176 #define AARCH64_SIGCONTEXT_XO_OFFSET 8 -/* Implement the "init" method of struct tramp_frame. */ +/* Implement the "init" method of struct tramp_frame for LP64. */ static void aarch64_linux_sigframe_init (const struct tramp_frame *self, @@ -186,6 +186,62 @@ static const struct tramp_frame aarch64_linux_rt_sigframe = aarch64_linux_sigframe_init }; +/* These magic numbers need to reflect the layout of the kernel + defined struct rt_sigframe and ucontext in LP64 mode. */ +#define AARCH64_ILP32_SIGCONTEXT_REG_SIZE 8 +#define AARCH64_ILP32_RT_SIGFRAME_UCONTEXT_OFFSET 128 +#define AARCH64_ILP32_UCONTEXT_SIGCONTEXT_OFFSET 160 +#define AARCH64_ILP32_SIGCONTEXT_XO_OFFSET 8 + +/* Implement the "init" method of struct tramp_frame for ILP32. */ + +static void +aarch64_ilp32_linux_sigframe_init (const struct tramp_frame *self, + struct frame_info *this_frame, + struct trad_frame_cache *this_cache, + CORE_ADDR func) +{ + CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM); + CORE_ADDR sigcontext_addr = + sp + + AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET + + AARCH64_ILP32_UCONTEXT_SIGCONTEXT_OFFSET; + int i; + + for (i = 0; i < 31; i++) + { + trad_frame_set_reg_addr (this_cache, + AARCH64_X0_REGNUM + i, + sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + + i * AARCH64_SIGCONTEXT_REG_SIZE); + } + trad_frame_set_reg_addr (this_cache, AARCH64_SP_REGNUM, + sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + + 31 * AARCH64_SIGCONTEXT_REG_SIZE); + trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, + sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + + 32 * AARCH64_SIGCONTEXT_REG_SIZE); + + trad_frame_set_id (this_cache, frame_id_build (sp, func)); +} + +static const struct tramp_frame aarch64_ilp32_linux_rt_sigframe = +{ + SIGTRAMP_FRAME, + 4, + { + /* movz x8, 0x8b (S=1,o=10,h=0,i=0x8b,r=8) + Soo1 0010 1hhi iiii iiii iiii iiir rrrr */ + {0xd2801168, -1}, + + /* svc 0x0 (o=0, l=1) + 1101 0100 oooi iiii iiii iiii iii0 00ll */ + {0xd4000001, -1}, + {TRAMP_SENTINEL_INSN, -1} + }, + aarch64_ilp32_linux_sigframe_init +}; + /* Register maps. */ static const struct regcache_map_entry aarch64_linux_gregmap[] = @@ -1025,8 +1081,12 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) linux_init_abi (info, gdbarch); - set_solib_svr4_fetch_link_map_offsets (gdbarch, - svr4_lp64_fetch_link_map_offsets); + if (tdep->ilp32) + set_solib_svr4_fetch_link_map_offsets (gdbarch, + svr4_ilp32_fetch_link_map_offsets); + else + set_solib_svr4_fetch_link_map_offsets (gdbarch, + svr4_lp64_fetch_link_map_offsets); /* Enable TLS support. */ set_gdbarch_fetch_tls_load_module_address (gdbarch, @@ -1036,7 +1096,10 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver); - tramp_frame_prepend_unwinder (gdbarch, &aarch64_linux_rt_sigframe); + if (tdep->ilp32) + tramp_frame_prepend_unwinder (gdbarch, &aarch64_ilp32_linux_rt_sigframe); + else + tramp_frame_prepend_unwinder (gdbarch, &aarch64_linux_rt_sigframe); /* Enable longjmp. */ tdep->jb_pc = 11; |