[Guile-commits] 331/437: mips: Do not make t9 available as a generic register

[Andy Wingo]

wingo pushed a commit to branch lightning
in repository guile.

commit ade23376f9d31a912ee47cc8a6d9871266e0e7c3
Author: pcpa <address@hidden>
Date:   Mon Nov 3 12:55:35 2014 -0200

    mips: Do not make t9 available as a generic register
    
        * include/lightning/jit_mips.h: Do not make the t9 register
        JIT_R11 (or JIT_R7 for n32 or n64 abi) available. Previously
        it cause problems if one expects it to not be changed in a
        function call. For example, calling a jit function, where it
        really does not need to be changed.
---
 ChangeLog                    | 8 ++++++++
 include/lightning/jit_mips.h | 6 ++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index ef39be4..655eeb9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2014-11-03 Paulo Andrade <address@hidden>
+
+       * include/lightning/jit_mips.h: Do not make the t9 register
+       JIT_R11 (or JIT_R7 for n32 or n64 abi) available. Previously
+       it cause problems if one expects it to not be changed in a
+       function call. For example, calling a jit function, where it
+       really does not need to be changed.
+
 2014-10-26 Paulo Andrade <address@hidden>
 
        * lib/jit_aarch64.c, lib/jit_alpha.c, lib/jit_arm.c,
diff --git a/include/lightning/jit_mips.h b/include/lightning/jit_mips.h
index c56d511..7ebf153 100644
--- a/include/lightning/jit_mips.h
+++ b/include/lightning/jit_mips.h
@@ -35,10 +35,10 @@ typedef enum {
 #define jit_r(i)               (_V0 + (i))
 #if NEW_ABI
 #  define jit_arg_reg_p(i)     ((i) >= 0 && (i) < 4)
-#  define jit_r_num()          8
+#  define jit_r_num()          7
 #else
 #  define jit_arg_reg_p(i)     ((i) >= 0 && (i) < 4)
-#  define jit_r_num()          12
+#  define jit_r_num()          11
 #endif
 #define jit_v(i)               (_S0 + (i))
 #define jit_v_num()            8
@@ -58,7 +58,6 @@ typedef enum {
 #  define JIT_R4               _T6
 #  define JIT_R5               _T7
 #  define JIT_R6               _T8
-#  define JIT_R7               _T9
 #else
 #  define JIT_R2               _T0
 #  define JIT_R3               _T1
@@ -69,7 +68,6 @@ typedef enum {
 #  define JIT_R8               _T6
 #  define JIT_R9               _T7
 #  define JIT_R10              _T8
-#  define JIT_R11              _T9
 #endif
     _V0, _V1,
 #if !NEW_ABI