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* config/tc-v850.c (v850_reloc_prefix): Several disgusting

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hacks to improve parsing of complex hi, lo, zda, etc
        expressions.
        (md_assemble): Don't demand and eat a trailing ')' after finding
        a v850 relocation prefix.  Sign extend the constant in a
        BFD_RELOC_LO16 expression.  Do eat a trailing ')' after a complete
        operand.
        (parse_cons_expression_v850): Don't eat a trailing ')' after
        finding a v850 relocation prefix.
Trying to get nec's sample code to assemble.  Why oh why didn't JT try
to assemble any of their code...
This commit is contained in:
Jeff Law 1996-10-25 01:14:34 +00:00
parent 0f02ae6e5a
commit d3bbd9dc3e
2 changed files with 61 additions and 21 deletions
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10
gas/ChangeLog
View file

@ -1,6 +1,16 @@
start-sanitize-v850
Thu Oct 24 14:31:04 1996 Jeffrey A Law (law@cygnus.com)
* config/tc-v850.c (v850_reloc_prefix): Several disgusting
hacks to improve parsing of complex hi, lo, zda, etc
expressions.
(md_assemble): Don't demand and eat a trailing ')' after finding
a v850 relocation prefix. Sign extend the constant in a
BFD_RELOC_LO16 expression. Do eat a trailing ')' after a complete
operand.
(parse_cons_expression_v850): Don't eat a trailing ')' after
finding a v850 relocation prefix.
* config/tc-v850.h (TC_PARSE_CONS_EXPRESSION): Define.
(TC_CONS_FIX_NEW): Likewise.
* config/tc-v850.c (parse_cons_expression_v850): New function.

72
gas/config/tc-v850.c
View file

@ -459,39 +459,72 @@ v850_reloc_prefix()
{
if (strncmp(input_line_pointer, "hi0(", 4) == 0)
{
input_line_pointer += 4;
input_line_pointer += 3;
return BFD_RELOC_HI16;
}
if (strncmp(input_line_pointer, "hi(", 3) == 0)
{
input_line_pointer += 3;
input_line_pointer += 2;
return BFD_RELOC_HI16_S;
}
if (strncmp (input_line_pointer, "lo(", 3) == 0)
{
input_line_pointer += 3;
input_line_pointer += 2;
return BFD_RELOC_LO16;
}
if (strncmp (input_line_pointer, "sdaoff(", 7) == 0)
{
input_line_pointer += 7;
input_line_pointer += 6;
return BFD_RELOC_V850_SDA_OFFSET;
}
if (strncmp (input_line_pointer, "zdaoff(", 7) == 0)
{
input_line_pointer += 7;
input_line_pointer += 6;
return BFD_RELOC_V850_ZDA_OFFSET;
}
if (strncmp (input_line_pointer, "tdaoff(", 7) == 0)
{
input_line_pointer += 7;
input_line_pointer += 6;
return BFD_RELOC_V850_TDA_OFFSET;
}
/* FIXME: implement sda, tda, zda here */
/* Disgusting */
if (strncmp(input_line_pointer, "(hi0(", 5) == 0)
{
input_line_pointer += 4;
return BFD_RELOC_HI16;
}
if (strncmp(input_line_pointer, "(hi(", 4) == 0)
{
input_line_pointer += 3;
return BFD_RELOC_HI16_S;
}
if (strncmp (input_line_pointer, "(lo(", 4) == 0)
{
input_line_pointer += 3;
return BFD_RELOC_LO16;
}
if (strncmp (input_line_pointer, "(sdaoff(", 8) == 0)
{
input_line_pointer += 7;
return BFD_RELOC_V850_SDA_OFFSET;
}
if (strncmp (input_line_pointer, "(zdaoff(", 8) == 0)
{
input_line_pointer += 7;
return BFD_RELOC_V850_ZDA_OFFSET;
}
if (strncmp (input_line_pointer, "(tdaoff(", 8) == 0)
{
input_line_pointer += 7;
return BFD_RELOC_V850_TDA_OFFSET;
}
return BFD_RELOC_UNUSED;
}
@ -570,19 +603,20 @@ md_assemble (str)
{
expression(&ex);
if (*input_line_pointer++ != ')')
{
errmsg = "syntax error: expected `)'";
goto error;
}
if (ex.X_op == O_constant)
{
switch (reloc)
{
case BFD_RELOC_LO16:
ex.X_add_number &= 0xffff;
break;
{
/* Truncate, then sign extend the value. */
int temp = ex.X_add_number & 0xffff;
/* XXX Assumes 32bit ints! */
temp = (temp << 16) >> 16;
ex.X_add_number = temp;
break;
}
case BFD_RELOC_HI16:
ex.X_add_number = ((ex.X_add_number >> 16) & 0xffff);
@ -720,7 +754,8 @@ md_assemble (str)
str = input_line_pointer;
input_line_pointer = hold;
while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
|| *str == ')')
++str;
}
match = 1;
@ -1019,11 +1054,6 @@ parse_cons_expression_v850 (exp)
/* Do normal expression parsing. */
expression (exp);
/* If we had to handle a reloc prefix, then eat the trailing
close paren. */
if (hold_cons_reloc != BFD_RELOC_UNUSED)
input_line_pointer++;
}
/* Create a fixup for a cons expression. If parse_cons_expression_v850