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authorMichal Ludvig <mludvig@suse.cz>2003-06-05 09:23:47 +0000
committerMichal Ludvig <mludvig@suse.cz>2003-06-05 09:23:47 +0000
commit2be24b54a9ec257e8f0f5035e1bf66ceb6a517ad (patch)
treef525b62abed801e4970c37a1daa5c44f95d66f09 /gas/dw2gencfi.c
parent1233ae62992c4829296d29f67b78231db3b87a6f (diff)
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2003-06-05 Michal Ludvig <mludvig@suse.cz>
* dw2gencfi.c (cfi_add_CFA_insn, cfi_add_CFA_insn_reg) (cfi_add_CFA_insn_reg_reg, cfi_add_CFA_insn_reg_offset): New. (cfi_add_CFA_offset, cfi_add_CFA_def_cfa) (cfi_add_CFA_register, cfi_add_CFA_def_cfa_register) (cfi_add_CFA_def_cfa_offset): Use cfi_add_CFA_insn_*(). (cfi_add_CFA_restore, cfi_add_CFA_undefined) (cfi_add_CFA_same_value, cfi_add_CFA_remember_state) (cfi_add_CFA_restore_state, cfi_add_CFA_nop): New. (cfi_pseudo_table): New directives .cfi_return_column, .cfi_restore, .cfi_undefined, .cfi_same_value, .cfi_remember_state, .cfi_restore_state, .cfi_nop. (dot_cfi, output_cfi_insn): Handle new directives. * dw2gencfi.h (cfi_add_CFA_restore, cfi_add_CFA_undefined) (cfi_add_CFA_same_value, cfi_add_CFA_remember_state) (cfi_add_CFA_restore_state, cfi_add_CFA_nop): New prototypes.
Diffstat (limited to 'gas/dw2gencfi.c')
-rw-r--r--gas/dw2gencfi.c200
1 files changed, 160 insertions, 40 deletions
diff --git a/gas/dw2gencfi.c b/gas/dw2gencfi.c
index a224524..5e37833 100644
--- a/gas/dw2gencfi.c
+++ b/gas/dw2gencfi.c
@@ -164,6 +164,54 @@ cfi_set_return_column (unsigned regno)
cur_fde_data->return_column = regno;
}
+/* Universal functions to store new instructions. */
+
+static void
+cfi_add_CFA_insn(int insn)
+{
+ struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
+
+ insn_ptr->insn = insn;
+}
+
+static void
+cfi_add_CFA_insn_reg (int insn, unsigned regno)
+{
+ struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
+
+ insn_ptr->insn = insn;
+ insn_ptr->u.r = regno;
+}
+
+static void
+cfi_add_CFA_insn_offset (int insn, offsetT offset)
+{
+ struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
+
+ insn_ptr->insn = insn;
+ insn_ptr->u.i = offset;
+}
+
+static void
+cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2)
+{
+ struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
+
+ insn_ptr->insn = insn;
+ insn_ptr->u.rr.reg1 = reg1;
+ insn_ptr->u.rr.reg2 = reg2;
+}
+
+static void
+cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset)
+{
+ struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
+
+ insn_ptr->insn = insn;
+ insn_ptr->u.ri.reg = regno;
+ insn_ptr->u.ri.offset = offset;
+}
+
/* Add a CFI insn to advance the PC from the last address to LABEL. */
void
@@ -183,11 +231,7 @@ cfi_add_advance_loc (symbolS *label)
void
cfi_add_CFA_offset (unsigned regno, offsetT offset)
{
- struct cfi_insn_data *insn = alloc_cfi_insn_data ();
-
- insn->insn = DW_CFA_offset;
- insn->u.ri.reg = regno;
- insn->u.ri.offset = offset;
+ cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset);
}
/* Add a DW_CFA_def_cfa record to the CFI data. */
@@ -195,12 +239,7 @@ cfi_add_CFA_offset (unsigned regno, offsetT offset)
void
cfi_add_CFA_def_cfa (unsigned regno, offsetT offset)
{
- struct cfi_insn_data *insn = alloc_cfi_insn_data ();
-
- insn->insn = DW_CFA_def_cfa;
- insn->u.ri.reg = regno;
- insn->u.ri.offset = offset;
-
+ cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset);
cur_cfa_offset = offset;
}
@@ -209,11 +248,7 @@ cfi_add_CFA_def_cfa (unsigned regno, offsetT offset)
void
cfi_add_CFA_register (unsigned reg1, unsigned reg2)
{
- struct cfi_insn_data *insn = alloc_cfi_insn_data ();
-
- insn->insn = DW_CFA_register;
- insn->u.rr.reg1 = reg1;
- insn->u.rr.reg2 = reg2;
+ cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2);
}
/* Add a DW_CFA_def_cfa_register record to the CFI data. */
@@ -221,10 +256,7 @@ cfi_add_CFA_register (unsigned reg1, unsigned reg2)
void
cfi_add_CFA_def_cfa_register (unsigned regno)
{
- struct cfi_insn_data *insn = alloc_cfi_insn_data ();
-
- insn->insn = DW_CFA_def_cfa_register;
- insn->u.r = regno;
+ cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno);
}
/* Add a DW_CFA_def_cfa_offset record to the CFI data. */
@@ -232,14 +264,46 @@ cfi_add_CFA_def_cfa_register (unsigned regno)
void
cfi_add_CFA_def_cfa_offset (offsetT offset)
{
- struct cfi_insn_data *insn = alloc_cfi_insn_data ();
-
- insn->insn = DW_CFA_def_cfa_offset;
- insn->u.i = offset;
-
+ cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset);
cur_cfa_offset = offset;
}
+void
+cfi_add_CFA_restore (unsigned regno)
+{
+ cfi_add_CFA_insn_reg (DW_CFA_restore, regno);
+}
+
+void
+cfi_add_CFA_undefined (unsigned regno)
+{
+ cfi_add_CFA_insn_reg (DW_CFA_undefined, regno);
+}
+
+void
+cfi_add_CFA_same_value (unsigned regno)
+{
+ cfi_add_CFA_insn_reg (DW_CFA_same_value, regno);
+}
+
+void
+cfi_add_CFA_remember_state (void)
+{
+ cfi_add_CFA_insn (DW_CFA_remember_state);
+}
+
+void
+cfi_add_CFA_restore_state (void)
+{
+ cfi_add_CFA_insn (DW_CFA_restore_state);
+}
+
+void
+cfi_add_CFA_nop (void)
+{
+ cfi_add_CFA_insn (DW_CFA_nop);
+}
+
/* Parse CFI assembler directives. */
@@ -248,7 +312,8 @@ static void dot_cfi_startproc (int);
static void dot_cfi_endproc (int);
/* Fake CFI type; outside the byte range of any real CFI insn. */
-#define CFI_adjust_cfa_offset 0x100
+#define CFI_adjust_cfa_offset 0x100
+#define CFI_return_column 0x101
const pseudo_typeS cfi_pseudo_table[] =
{
@@ -260,6 +325,13 @@ const pseudo_typeS cfi_pseudo_table[] =
{ "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset },
{ "cfi_offset", dot_cfi, DW_CFA_offset },
{ "cfi_register", dot_cfi, DW_CFA_register },
+ { "cfi_return_column", dot_cfi, CFI_return_column },
+ { "cfi_restore", dot_cfi, DW_CFA_restore },
+ { "cfi_undefined", dot_cfi, DW_CFA_undefined },
+ { "cfi_same_value", dot_cfi, DW_CFA_same_value },
+ { "cfi_remember_state", dot_cfi, DW_CFA_remember_state },
+ { "cfi_restore_state", dot_cfi, DW_CFA_restore_state },
+ { "cfi_nop", dot_cfi, DW_CFA_nop },
{ NULL, NULL, 0 }
};
@@ -343,46 +415,74 @@ dot_cfi (int arg)
switch (arg)
{
- /* Instructions that take two arguments (register, integer). */
case DW_CFA_offset:
- case DW_CFA_def_cfa:
reg1 = cfi_parse_reg ();
cfi_parse_separator ();
offset = cfi_parse_const ();
+ cfi_add_CFA_offset (reg1, offset);
+ break;
- if (arg == DW_CFA_def_cfa)
- cfi_add_CFA_def_cfa (reg1, offset);
- else
- cfi_add_CFA_offset (reg1, offset);
+ case DW_CFA_def_cfa:
+ reg1 = cfi_parse_reg ();
+ cfi_parse_separator ();
+ offset = cfi_parse_const ();
+ cfi_add_CFA_def_cfa (reg1, offset);
break;
- /* Instructions that take two arguments (register, register). */
case DW_CFA_register:
reg1 = cfi_parse_reg ();
cfi_parse_separator ();
reg2 = cfi_parse_reg ();
-
cfi_add_CFA_register (reg1, reg2);
break;
- /* Instructions that take one register argument. */
case DW_CFA_def_cfa_register:
reg1 = cfi_parse_reg ();
cfi_add_CFA_def_cfa_register (reg1);
break;
- /* Instructions that take one integer argument. */
case DW_CFA_def_cfa_offset:
offset = cfi_parse_const ();
cfi_add_CFA_def_cfa_offset (offset);
break;
- /* Special handling for pseudo-instruction. */
case CFI_adjust_cfa_offset:
offset = cfi_parse_const ();
cfi_add_CFA_def_cfa_offset (cur_cfa_offset + offset);
break;
+ case DW_CFA_restore:
+ reg1 = cfi_parse_reg ();
+ cfi_add_CFA_restore (reg1);
+ break;
+
+ case DW_CFA_undefined:
+ reg1 = cfi_parse_reg ();
+ cfi_add_CFA_undefined (reg1);
+ break;
+
+ case DW_CFA_same_value:
+ reg1 = cfi_parse_reg ();
+ cfi_add_CFA_same_value (reg1);
+ break;
+
+ case CFI_return_column:
+ reg1 = cfi_parse_reg ();
+ cfi_set_return_column (reg1);
+ break;
+
+ case DW_CFA_remember_state:
+ cfi_add_CFA_remember_state ();
+ break;
+
+ case DW_CFA_restore_state:
+ cfi_add_CFA_restore_state ();
+ break;
+
+ case DW_CFA_nop:
+ cfi_add_CFA_nop ();
+ break;
+
default:
abort ();
}
@@ -553,8 +653,10 @@ output_cfi_insn (struct cfi_insn_data *insn)
break;
case DW_CFA_def_cfa_register:
- out_one (DW_CFA_def_cfa_register);
- out_uleb128 (insn->u.i);
+ case DW_CFA_undefined:
+ case DW_CFA_same_value:
+ out_one (insn->insn);
+ out_uleb128 (insn->u.r);
break;
case DW_CFA_def_cfa_offset:
@@ -571,6 +673,19 @@ output_cfi_insn (struct cfi_insn_data *insn)
}
break;
+ case DW_CFA_restore:
+ regno = insn->u.r;
+ if (regno <= 0x3F)
+ {
+ out_one (DW_CFA_restore + regno);
+ }
+ else
+ {
+ out_one (DW_CFA_restore_extended);
+ out_uleb128 (regno);
+ }
+ break;
+
case DW_CFA_offset:
regno = insn->u.ri.reg;
offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT;
@@ -599,8 +714,10 @@ output_cfi_insn (struct cfi_insn_data *insn)
out_uleb128 (insn->u.rr.reg2);
break;
+ case DW_CFA_remember_state:
+ case DW_CFA_restore_state:
case DW_CFA_nop:
- out_one (DW_CFA_nop);
+ out_one (insn->insn);
break;
default:
@@ -722,6 +839,9 @@ select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst)
break;
case DW_CFA_def_cfa_register:
+ case DW_CFA_restore:
+ case DW_CFA_undefined:
+ case DW_CFA_same_value:
if (i->u.r != j->u.r)
goto fail;
break;