Mesa (gallium-0.2): cell: add emit_RI10s() which does range checking on the 10-bit signed immediate field

[Brian Paul]

Module: Mesa
Branch: gallium-0.2
Commit: d3403b5482ee1c0faa0f42b8782ee3093a2f7b5e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d3403b5482ee1c0faa0f42b8782ee3093a2f7b5e

Author: Brian Paul <brian.paul at tungstengraphics.com>
Date:   Fri Oct 10 14:57:57 2008 -0600

cell: add emit_RI10s() which does range checking on the 10-bit signed immediate field

This type of checking should be expanded to cover more instructions...

---

 src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c |   16 ++++++++++++++++
 src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h |   24 ++++++++++++++----------
 2 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
index d0bacd0..dea1aed 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
@@ -278,6 +278,16 @@ static void emit_RI10(struct spe_function *p, unsigned op, unsigned rT,
 }
 
 
+/** As above, but do range checking on signed immediate value */
+static void emit_RI10s(struct spe_function *p, unsigned op, unsigned rT,
+                       unsigned rA, int imm, const char *name)
+{
+    assert(imm <= 511);
+    assert(imm >= -512);
+    emit_RI10(p, op, rT, rA, imm, name);
+}
+
+
 static void emit_RI16(struct spe_function *p, unsigned op, unsigned rT,
 		      int imm, const char *name)
 {
@@ -354,6 +364,12 @@ void _name (struct spe_function *p, unsigned rT, unsigned rA, int imm) \
    emit_RI10(p, _op, rT, rA, imm, __FUNCTION__);             \
 }
 
+#define EMIT_RI10s(_name, _op) \
+void _name (struct spe_function *p, unsigned rT, unsigned rA, int imm) \
+{ \
+   emit_RI10s(p, _op, rT, rA, imm, __FUNCTION__);             \
+}
+
 #define EMIT_RI16(_name, _op) \
 void _name (struct spe_function *p, unsigned rT, int imm) \
 { \
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
index 47dadb3..d6a3c02 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
@@ -119,6 +119,9 @@ extern void spe_comment(struct spe_function *p, int rel_indent, const char *s);
 #define EMIT_RI10(_name, _op) \
     extern void _name (struct spe_function *p, unsigned rT, unsigned rA, \
 			   int imm)
+#define EMIT_RI10s(_name, _op) \
+    extern void _name (struct spe_function *p, unsigned rT, unsigned rA, \
+			   int imm)
 #define EMIT_RI16(_name, _op) \
     extern void _name (struct spe_function *p, unsigned rT, int imm)
 #define EMIT_RI18(_name, _op) \
@@ -163,7 +166,7 @@ EMIT_RI16(spe_fsmbi, 0x065);
 EMIT_RR  (spe_ah,      0x0c8);
 EMIT_RI10(spe_ahi,     0x01d);
 EMIT_RR  (spe_a,       0x0c0);
-EMIT_RI10(spe_ai,      0x01c);
+EMIT_RI10s(spe_ai,      0x01c);
 EMIT_RR  (spe_sfh,     0x048);
 EMIT_RI10(spe_sfhi,    0x00d);
 EMIT_RR  (spe_sf,      0x040);
@@ -201,19 +204,19 @@ EMIT_R   (spe_xshw,    0x2ae);
 EMIT_R   (spe_xswd,    0x2a6);
 EMIT_RR  (spe_and,     0x0c1);
 EMIT_RR  (spe_andc,    0x2c1);
-EMIT_RI10(spe_andbi,   0x016);
-EMIT_RI10(spe_andhi,   0x015);
-EMIT_RI10(spe_andi,    0x014);
+EMIT_RI10s(spe_andbi,   0x016);
+EMIT_RI10s(spe_andhi,   0x015);
+EMIT_RI10s(spe_andi,    0x014);
 EMIT_RR  (spe_or,      0x041);
 EMIT_RR  (spe_orc,     0x2c9);
-EMIT_RI10(spe_orbi,    0x006);
-EMIT_RI10(spe_orhi,    0x005);
-EMIT_RI10(spe_ori,     0x004);
+EMIT_RI10s(spe_orbi,    0x006);
+EMIT_RI10s(spe_orhi,    0x005);
+EMIT_RI10s(spe_ori,     0x004);
 EMIT_R   (spe_orx,     0x1f0);
 EMIT_RR  (spe_xor,     0x241);
-EMIT_RI10(spe_xorbi,   0x026);
-EMIT_RI10(spe_xorhi,   0x025);
-EMIT_RI10(spe_xori,    0x024);
+EMIT_RI10s(spe_xorbi,   0x026);
+EMIT_RI10s(spe_xorhi,   0x025);
+EMIT_RI10s(spe_xori,    0x024);
 EMIT_RR  (spe_nand,    0x0c9);
 EMIT_RR  (spe_nor,     0x049);
 EMIT_RR  (spe_eqv,     0x249);
@@ -422,6 +425,7 @@ EMIT_R   (spe_wrch,       0x10d);
 #undef EMIT_RI7
 #undef EMIT_RI8
 #undef EMIT_RI10
+#undef EMIT_RI10s
 #undef EMIT_RI16
 #undef EMIT_RI18
 #undef EMIT_I16