diff options
Diffstat (limited to 'gdb/sparc64-tdep.c')
| -rw-r--r-- | gdb/sparc64-tdep.c | 133 |
1 files changed, 71 insertions, 62 deletions
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c index da5d3571a4c..81b2115691a 100644 --- a/gdb/sparc64-tdep.c +++ b/gdb/sparc64-tdep.c @@ -271,7 +271,8 @@ static struct sparc64_register_info sparc64_register_info[] = /* This raw register contains the contents of %cwp, %pstate, %asi and %ccr as laid out in a %tstate register. */ - { NULL, &builtin_type_int64 }, + /* FIXME: Give it a name until we start using register groups. */ + { "state", &builtin_type_int64 }, { "fsr", &builtin_type_int64 }, { "fprs", &builtin_type_int64 }, @@ -422,16 +423,16 @@ sparc64_pseudo_register_read (struct gdbarch *gdbarch, regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); switch (regnum) { - SPARC64_CWP_REGNUM: + case SPARC64_CWP_REGNUM: state = (state >> 0) & ((1 << 5) - 1); break; - SPARC64_PSTATE_REGNUM: + case SPARC64_PSTATE_REGNUM: state = (state >> 8) & ((1 << 12) - 1); break; - SPARC64_ASI_REGNUM: + case SPARC64_ASI_REGNUM: state = (state >> 24) & ((1 << 8) - 1); break; - SPARC64_CCR_REGNUM: + case SPARC64_CCR_REGNUM: state = (state >> 32) & ((1 << 8) - 1); break; } @@ -471,6 +472,32 @@ sparc64_pseudo_register_write (struct gdbarch *gdbarch, regcache_raw_write (regcache, regnum, buf); regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 8); } + else if (regnum == SPARC64_CWP_REGNUM + || regnum == SPARC64_PSTATE_REGNUM + || regnum == SPARC64_ASI_REGNUM + || regnum == SPARC64_CCR_REGNUM) + { + ULONGEST state, bits; + + regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); + bits = extract_unsigned_integer (buf, 8); + switch (regnum) + { + case SPARC64_CWP_REGNUM: + state |= ((bits & ((1 << 5) - 1)) << 0); + break; + case SPARC64_PSTATE_REGNUM: + state |= ((bits & ((1 << 12) - 1)) << 8); + break; + case SPARC64_ASI_REGNUM: + state |= ((bits & ((1 << 8) - 1)) << 24); + break; + case SPARC64_CCR_REGNUM: + state |= ((bits & ((1 << 8) - 1)) << 32); + break; + } + regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); + } } /* Use the program counter to determine the contents and size of a @@ -1071,7 +1098,7 @@ sparc64_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr, sp -= 16 * 8; /* Stack should be 16-byte aligned at this point. */ - gdb_assert (sp % 16 == 0); + gdb_assert ((sp + BIAS) % 16 == 0); /* Finally, update the stack pointer. */ regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); @@ -1273,9 +1300,6 @@ sparc_software_single_step (enum target_signal sig, int insert_breakpoints_p) { CORE_ADDR pc; - gdb_assert (npc == 0); - gdb_assert (nnpc == 0); - pc = sparc_address_from_register (SPARC64_PC_REGNUM); npc = sparc_address_from_register (SPARC64_NPC_REGNUM); @@ -1375,40 +1399,15 @@ sparc64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Helper functions for dealing with register windows. */ -static void +void sparc_supply_rwindow (CORE_ADDR sp, int regnum) { int offset = 0; char buf[8]; int i; - /* Clear out the top half of the temporary buffer, and put the - register value in the bottom half if we're in 64-bit mode. */ - if (gdbarch_ptr_bit (current_gdbarch) == 64) - { - memset (buf, 0, 4); - offset = 4; - } - - for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) - { - if (regnum == i || regnum == -1) - { - target_read_memory (sp + ((i - SPARC_L0_REGNUM) * 4), - buf + offset, 4); - supply_register (i, buf); - } - } -} - -void -sparc64_supply_rwindow (CORE_ADDR sp, int regnum) -{ if (sp & 1) { - char buf[8]; - int i; - /* Registers are 64-bit. */ sp += BIAS; @@ -1416,8 +1415,7 @@ sparc64_supply_rwindow (CORE_ADDR sp, int regnum) { if (regnum == i || regnum == -1) { - target_read_memory (sp + ((i - SPARC_L0_REGNUM) * 8), - buf, sizeof (buf)); + target_read_memory (sp + ((i - SPARC_L0_REGNUM) * 8), buf, 8); supply_register (i, buf); } } @@ -1426,39 +1424,37 @@ sparc64_supply_rwindow (CORE_ADDR sp, int regnum) { /* Registers are 32-bit. Toss any sign-extension of the stack pointer. */ - sparc_supply_rwindow (sp & 0xffffffffUL, regnum); - } -} - -static void -sparc_fill_rwindow (CORE_ADDR sp, int regnum) -{ - int offset = 0; - char buf[8]; - int i; + sp &= 0xffffffffUL; - /* Only use the bottom half if we're in 64-bit mode. */ - if (gdbarch_ptr_bit (current_gdbarch) == 64) - offset = 4; + /* Clear out the top half of the temporary buffer, and put the + register value in the bottom half if we're in 64-bit mode. */ + if (gdbarch_ptr_bit (current_gdbarch) == 64) + { + memset (buf, 0, 4); + offset = 4; + } - for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) - { - if (regnum == -1 || regnum == SPARC_SP_REGNUM || regnum == i) + for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) { - regcache_collect (i, buf); - target_write_memory (sp + ((i - SPARC_L0_REGNUM) * 4), buf, 4); + if (regnum == i || regnum == -1) + { + target_read_memory (sp + ((i - SPARC_L0_REGNUM) * 4), + buf + offset, 4); + supply_register (i, buf); + } } } } void -sparc64_fill_rwindow (CORE_ADDR sp, int regnum) +sparc_fill_rwindow (CORE_ADDR sp, int regnum) { + int offset = 0; + char buf[8]; + int i; + if (sp & 1) { - char buf[8]; - int i; - /* Registers are 64-bit. */ sp += BIAS; @@ -1467,8 +1463,7 @@ sparc64_fill_rwindow (CORE_ADDR sp, int regnum) if (regnum == -1 || regnum == SPARC_SP_REGNUM || regnum == i) { regcache_collect (i, buf); - target_write_memory (sp + ((i - SPARC_L0_REGNUM) * 8), - buf, sizeof (buf)); + target_write_memory (sp + ((i - SPARC_L0_REGNUM) * 8), buf, 8); } } } @@ -1476,7 +1471,21 @@ sparc64_fill_rwindow (CORE_ADDR sp, int regnum) { /* Registers are 32-bit. Toss any sign-extension of the stack pointer. */ - sparc_fill_rwindow (sp & 0xffffffffUL, regnum); + sp &= 0xffffffffUL; + + /* Only use the bottom half if we're in 64-bit mode. */ + if (gdbarch_ptr_bit (current_gdbarch) == 64) + offset = 4; + + for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) + { + if (regnum == -1 || regnum == SPARC_SP_REGNUM || regnum == i) + { + regcache_collect (i, buf); + target_write_memory (sp + ((i - SPARC_L0_REGNUM) * 4), + buf + offset, 4); + } + } } } |