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* ccl.c (CCL_CODE_RANGE): Allow negative numbers. (Bug#8751)

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(CCL_CODE_MIN): New macro.
This commit is contained in:
Paul Eggert 2011-05-30 19:12:01 -07:00
parent b5244046e1
commit e003a29261
2 changed files with 12 additions and 6 deletions
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5
src/ChangeLog
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@ -1,3 +1,8 @@
2011-05-31 Paul Eggert <eggert@cs.ucla.edu>
* ccl.c (CCL_CODE_RANGE): Allow negative numbers. (Bug#8751)
(CCL_CODE_MIN): New macro.
2011-05-30 Paul Eggert <eggert@cs.ucla.edu>
* alloc.c (lisp_align_malloc): Omit unnecessary val==NULL tests.

13
src/ccl.c
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@ -79,9 +79,8 @@ static Lisp_Object Vccl_program_table;
#define CCL_HEADER_EOF 1
#define CCL_HEADER_MAIN 2
/* CCL code is a sequence of 28-bit non-negative integers (i.e. the
MSB is always 0), each contains CCL command and/or arguments in the
following format:
/* CCL code is a sequence of 28-bit integers. Each contains a CCL
command and/or arguments in the following format:
|----------------- integer (28-bit) ------------------|
|------- 17-bit ------|- 3-bit --|- 3-bit --|- 5-bit -|
@ -94,12 +93,14 @@ static Lisp_Object Vccl_program_table;
|------------- constant or other args ----------------|
cccccccccccccccccccccccccccc
where, `cc...c' is a non-negative integer indicating constant value
(the left most `c' is always 0) or an absolute jump address, `RRR'
where `cc...c' is an integer indicating a constant value or an
absolute jump address. The context determines whether `cc...c' is
considered to be unsigned, or a signed two's complement number. `RRR'
and `rrr' are CCL register number, `XXXXX' is one of the following
CCL commands. */
#define CCL_CODE_MAX ((1 << (28 - 1)) - 1)
#define CCL_CODE_MIN (-1 - CCL_CODE_MAX)
/* CCL commands
@ -756,7 +757,7 @@ while(0)
while (0)
#define GET_CCL_CODE(code, ccl_prog, ic) \
GET_CCL_RANGE (code, ccl_prog, ic, 0, CCL_CODE_MAX)
GET_CCL_RANGE (code, ccl_prog, ic, CCL_CODE_MIN, CCL_CODE_MAX)
#define GET_CCL_INT(var, ccl_prog, ic) \
GET_CCL_RANGE (var, ccl_prog, ic, INT_MIN, INT_MAX)