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[Lightning] [PATCH] Export argument registers
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From: |
Paul Cercueil |
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Subject: |
[Lightning] [PATCH] Export argument registers |
|
Date: |
Fri, 11 Oct 2019 19:41:55 +0200 |
Provide the JIT_A_NUM and JIT_A(n) macros to target the registers that
are dedicated to register passing in function calls.
These registers are safe to be used as long as it is understood that
they will be trashed as soon as a function is called, and must not be
used to pass parameters to a function (jit_pushargr/i should be used
instead).
Signed-off-by: Paul Cercueil <address@hidden>
---
include/lightning.h.in | 2 ++
include/lightning/jit_aarch64.h | 10 ++++++++++
include/lightning/jit_alpha.h | 8 ++++++++
include/lightning/jit_arm.h | 6 ++++++
include/lightning/jit_hppa.h | 6 ++++++
include/lightning/jit_ia64.h | 10 ++++++++++
include/lightning/jit_mips.h | 14 ++++++++++++++
include/lightning/jit_ppc.h | 10 ++++++++++
include/lightning/jit_riscv.h | 10 ++++++++++
include/lightning/jit_s390.h | 6 ++++++
include/lightning/jit_sparc.h | 10 ++++++++++
include/lightning/jit_x86.h | 15 +++++++++++++++
12 files changed, 107 insertions(+)
diff --git a/include/lightning.h.in b/include/lightning.h.in
index fe3abe9..00ecde4 100644
--- a/include/lightning.h.in
+++ b/include/lightning.h.in
@@ -157,9 +157,11 @@ typedef jit_int32_t jit_fpr_t;
#define JIT_R(index) jit_r(index)
#define JIT_V(index) jit_v(index)
+#define JIT_A(index) jit_a(index)
#define JIT_F(index) jit_f(index)
#define JIT_R_NUM jit_r_num()
#define JIT_V_NUM jit_v_num()
+#define JIT_A_NUM jit_a_num()
#define JIT_F_NUM jit_f_num()
#define JIT_DISABLE_DATA 1 /* force synthesize of constants */
diff --git a/include/lightning/jit_aarch64.h b/include/lightning/jit_aarch64.h
index 6e7d8be..3e32c75 100644
--- a/include/lightning/jit_aarch64.h
+++ b/include/lightning/jit_aarch64.h
@@ -32,6 +32,8 @@ typedef enum {
#define jit_r_num() 7
#define jit_v(i) (_R19 + (i))
#define jit_v_num() 10
+#define jit_a_num() 8
+#define jit_a(i) (_V0 - (i))
#define jit_f(i) (_V8 + (i))
#define jit_f_num() 8
#define JIT_R0 _R9
@@ -80,6 +82,14 @@ typedef enum {
/* callee save */
_V8, _V9, _V10, _V11,
_V12, _V13, _V14, _V15,
+#define JIT_A0 _V0
+#define JIT_A1 _V1
+#define JIT_A2 _V2
+#define JIT_A3 _V3
+#define JIT_A4 _V4
+#define JIT_A5 _V5
+#define JIT_A6 _V6
+#define JIT_A7 _V7
_V7, _V6, _V5, _V4, /* arguments */
_V3, _V2, _V1, _V0,
_NOREG,
diff --git a/include/lightning/jit_alpha.h b/include/lightning/jit_alpha.h
index 9bae343..6bab63f 100644
--- a/include/lightning/jit_alpha.h
+++ b/include/lightning/jit_alpha.h
@@ -32,6 +32,8 @@ typedef enum {
#define jit_r_num() 3
#define jit_v(i) (_S3 + (i))
#define jit_v_num() 3
+#define jit_a(i) (_A0 - (i))
+#define jit_a_num() 6
#define jit_f(i) (_F2 + (i))
#define jit_f_num() 8
/* Volatile - Assembly temporary register */
@@ -57,6 +59,12 @@ typedef enum {
_S4, _S5,
/* Nonvolatile - Frame pointer */
_FP,
+#define JIT_A0 _A0
+#define JIT_A1 _A1
+#define JIT_A2 _A2
+#define JIT_A3 _A3
+#define JIT_A4 _A4
+#define JIT_A5 _A5
/* Volatile - Argument registers */
_A5, _A4, _A3, _A2,
_A1, _A0,
diff --git a/include/lightning/jit_arm.h b/include/lightning/jit_arm.h
index 81451f1..7fa2417 100644
--- a/include/lightning/jit_arm.h
+++ b/include/lightning/jit_arm.h
@@ -36,6 +36,8 @@ typedef enum {
#define jit_r_num() 3
#define jit_v(i) (_R7 + (i))
#define jit_v_num() 3
+#define jit_a(i) (_R0 - (i))
+#define jit_a_num() 4
#define jit_f(i) (jit_cpu.abi ? _D8 + ((i)<<1) : _D0 - ((i)<<1))
#define jit_f_num() 8
_R12, /* ip - temporary */
@@ -56,6 +58,10 @@ typedef enum {
_R13, /* sp - stack pointer */
_R14, /* lr - link register */
_R15, /* pc - program counter */
+#define JIT_A3 _R3
+#define JIT_A2 _R2
+#define JIT_A1 _R1
+#define JIT_A0 _R0
_R3, /* r3 - argument/result */
_R2, /* r2 - argument/result */
_R1, /* r1 - argument/result */
diff --git a/include/lightning/jit_hppa.h b/include/lightning/jit_hppa.h
index ddc3950..cf88876 100644
--- a/include/lightning/jit_hppa.h
+++ b/include/lightning/jit_hppa.h
@@ -34,6 +34,8 @@ typedef enum {
#define jit_r(n) ((n) < 3 ? _R4 + (n) : _R10 + (n) - 3)
#define jit_v_num() 11
#define jit_v(n) ((n) < 3 ? _R7 + (n) : _R11 + (n) - 3)
+#define jit_a_num() 4
+#define jit_a(n) (_R26 - (n))
#define jit_f_num() 8
#define jit_f(n) (_F12 - (n))
#define JIT_FP _R3
@@ -74,6 +76,10 @@ typedef enum {
_R16,
_R17,
_R18,
+#define JIT_A0 _R26
+#define JIT_A1 _R25
+#define JIT_A2 _R24
+#define JIT_A3 _R23
_R23, /* arg3 */
_R24, /* arg2 */
_R25, /* arg1 */
diff --git a/include/lightning/jit_ia64.h b/include/lightning/jit_ia64.h
index 718f191..01231d2 100644
--- a/include/lightning/jit_ia64.h
+++ b/include/lightning/jit_ia64.h
@@ -40,6 +40,8 @@ typedef enum {
#define jit_r(n) (_R40 + (n))
#define jit_v_num() 4
#define jit_v(n) (_R44 + (n))
+#define jit_a_num() 8
+#define jit_a(n) (_R39 - (n))
_R0, /* constant - Always 0 */
_R1, /* special - Global Data pointer (gp) */
/* r2-r3 - scratch - Use with 22-bit immediate add - scratch */
@@ -55,6 +57,14 @@ typedef enum {
_R31, _R30,
_R29, _R28, _R27, _R26, _R25, _R24, _R23, _R22,
_R21, _R20, _R19, _R18, _R17, _R16, _R15, _R14,
+#define JIT_A0 _R39
+#define JIT_A1 _R38
+#define JIT_A2 _R37
+#define JIT_A3 _R36
+#define JIT_A4 _R35
+#define JIT_A5 _R34
+#define JIT_A6 _R33
+#define JIT_A7 _R32
/* r32-r39 - aka in0-in7 - Incoming register arguments */
_R32, _R33, _R34, _R35, _R36, _R37, _R38, _R39,
/* r40-r127 - loc0...locn,out0...outn */
diff --git a/include/lightning/jit_mips.h b/include/lightning/jit_mips.h
index eb7d783..a927af4 100644
--- a/include/lightning/jit_mips.h
+++ b/include/lightning/jit_mips.h
@@ -40,6 +40,12 @@ typedef enum {
#endif
#define jit_v(i) (_S0 + (i))
#define jit_v_num() 8
+# define jit_a(i) (_A0 - (i))
+#if NEW_ABI
+# define jit_a_num() 8
+#else
+# define jit_a_num() 4
+#endif
#define jit_f(i) (_F0 + (i))
#if NEW_ABI
# define jit_f_num() 6
@@ -84,8 +90,16 @@ typedef enum {
_GP,
_SP, _FP,
#if NEW_ABI
+#define JIT_A7 _A7
+#define JIT_A6 _A6
+#define JIT_A5 _A5
+#define JIT_A4 _A4
_A7, _A6, _A5, _A4,
#endif
+#define JIT_A3 _A3
+#define JIT_A2 _A2
+#define JIT_A1 _A1
+#define JIT_A0 _A0
_A3, _A2, _A1, _A0,
#define JIT_F0 _F0
#define JIT_F1 _F2
diff --git a/include/lightning/jit_ppc.h b/include/lightning/jit_ppc.h
index f1bdbcb..0c0b08f 100644
--- a/include/lightning/jit_ppc.h
+++ b/include/lightning/jit_ppc.h
@@ -31,6 +31,8 @@ typedef enum {
#define jit_r_num() 3
#define jit_v(i) (_R27 - (i))
#define jit_v_num() 14
+#define jit_a(i) (_R3 - (i))
+#define jit_a_num() 8
#define jit_f(i) (_F14 + (i))
#define jit_f_num() 8
_R0,
@@ -58,6 +60,14 @@ typedef enum {
_R1,
#define JIT_FP _R31
_R31,
+#define JIT_A0 _R3
+#define JIT_A1 _R4
+#define JIT_A2 _R5
+#define JIT_A3 _R6
+#define JIT_A4 _R7
+#define JIT_A5 _R8
+#define JIT_A6 _R9
+#define JIT_A7 _R10
_R10, _R9, _R8, _R7, _R6, _R5, _R4, _R3,
_F0,
_F14, _F15, _F16, _F17, _F18, _F19, _F20, _F21,
diff --git a/include/lightning/jit_riscv.h b/include/lightning/jit_riscv.h
index 1b4f93d..39cd6a1 100644
--- a/include/lightning/jit_riscv.h
+++ b/include/lightning/jit_riscv.h
@@ -32,6 +32,8 @@ typedef enum {
#define jit_r_num() 7
#define jit_v(i) (JIT_V0 + (i))
#define jit_v_num() 11
+#define jit_a(i) (JIT_A0 - (i))
+#define jit_a_num() 8
#define jit_f(i) (JIT_F0 + (i))
#define jit_f_num() 12
_ZERO, /* x0 - Hard-wired zero --- */
@@ -84,6 +86,14 @@ typedef enum {
_S9, /* x25 - Saved register (CalleE save) */
_S10, /* x26 - Saved register (CalleE save) */
_S11, /* x27 - Saved register (CalleE save) */
+#define JIT_A0 _A0
+#define JIT_A1 _A1
+#define JIT_A2 _A2
+#define JIT_A3 _A3
+#define JIT_A4 _A4
+#define JIT_A5 _A5
+#define JIT_A6 _A6
+#define JIT_A7 _A7
_A7, /* x17 - Function argument (CalleR save) */
_A6, /* x16 - Function argument (CalleR save) */
_A5, /* x15 - Function argument (CalleR save) */
diff --git a/include/lightning/jit_s390.h b/include/lightning/jit_s390.h
index 6ab196b..6ae9b73 100644
--- a/include/lightning/jit_s390.h
+++ b/include/lightning/jit_s390.h
@@ -32,6 +32,8 @@ typedef enum {
#define jit_r_num() 3
#define jit_v(i) (_R11 + ((i) << 1))
#define jit_v_num() 3
+#define jit_a(i) (_R2 - (i))
+#define jit_a_num() 4
#define jit_f(i) (_F8 + (i))
#define jit_f_num() 6
#define JIT_R0 _R12
@@ -44,6 +46,10 @@ typedef enum {
_R12, /* Saved, GOT */
_R11, _R10, _R9, _R8, /* Saved */
_R7, /* Saved */
+#define JIT_A0 _R2
+#define JIT_A1 _R3
+#define JIT_A2 _R4
+#define JIT_A3 _R5
_R6, /* Saved, parameter */
_R5, _R4, _R3, /* Parameter passing */
_R2, /* Volatile, parameter and return value */
diff --git a/include/lightning/jit_sparc.h b/include/lightning/jit_sparc.h
index bee440b..97aa20b 100644
--- a/include/lightning/jit_sparc.h
+++ b/include/lightning/jit_sparc.h
@@ -32,6 +32,8 @@ typedef enum {
#define jit_r_num() 3
#define jit_v(i) (_L0 + (i))
#define jit_v_num() 8
+#define jit_a(i) (_I0 + (i))
+#define jit_a_num() 8
#if __WORDSIZE == 32
# define jit_f(i) (_F0 + ((i) << 1))
# define jit_f_num() 8
@@ -53,6 +55,14 @@ typedef enum {
_G0, _G1, _G2, _G3, _G4, _G5, _G6, _G7,
_O0, _O1, _O2, _O3, _O4, _O5, _SP, _O7,
_L0, _L1, _L2, _L3, _L4, _L5, _L6, _L7,
+#define JIT_A0 _I0
+#define JIT_A1 _I1
+#define JIT_A2 _I2
+#define JIT_A3 _I3
+#define JIT_A4 _I4
+#define JIT_A5 _I5
+#define JIT_A6 _I6
+#define JIT_A7 _I7
_I0, _I1, _I2, _I3, _I4, _I5, _FP, _I7,
#if __WORDSIZE == 32
# define JIT_F0 _F0
diff --git a/include/lightning/jit_x86.h b/include/lightning/jit_x86.h
index a278d06..122cf69 100644
--- a/include/lightning/jit_x86.h
+++ b/include/lightning/jit_x86.h
@@ -48,6 +48,7 @@ typedef enum {
# define jit_v_num() 3
# define jit_f(i) (jit_cpu.sse2 ? _XMM0 + (i) : _ST0 + (i))
# define jit_f_num() (jit_cpu.sse2 ? 8 : 6)
+# define jit_a_num() 0
# define JIT_R0 _RAX
# define JIT_R1 _RCX
# define JIT_R2 _RDX
@@ -71,9 +72,11 @@ typedef enum {
# define jit_r(i) (_RAX + (i))
# define jit_r_num() 3
# define jit_v(i) (_RBX + (i))
+# define jit_a(i) (_RCX - (i))
# define jit_v_num() 7
# define jit_f(index) (_XMM4 + (index))
# define jit_f_num() 12
+# define jit_a_num() 4
# define JIT_R0 _RAX
# define JIT_R1 _R10
# define JIT_R2 _R11
@@ -91,6 +94,10 @@ typedef enum {
/* Nonvolatile */
_RBX, _RDI, _RSI,
_R12, _R13, _R14, _R15,
+# define JIT_A0 _RCX
+# define JIT_A1 _RDX
+# define JIT_A2 _R8
+# define JIT_A3 _R9
/* Volatile - Integer arguments (4 to 1) */
_R9, _R8, _RDX, _RCX,
/* Nonvolatile */
@@ -119,7 +126,9 @@ typedef enum {
# define jit_r(i) (_RAX + (i))
# define jit_r_num() 3
# define jit_v(i) (_RBX + (i))
+# define jit_a(i) (_RDI - (i))
# define jit_v_num() 5
+# define jit_a_num() 6
# define jit_f(index) (_XMM8 + (index))
# define jit_f_num() 8
# define JIT_R0 _RAX
@@ -132,6 +141,12 @@ typedef enum {
# define JIT_V3 _R15
# define JIT_V4 _R12
_RBX, _R13, _R14, _R15, _R12,
+# define JIT_A0 _RDI
+# define JIT_A1 _RSI
+# define JIT_A2 _RDX
+# define JIT_A3 _RCX
+# define JIT_A4 _R8
+# define JIT_A5 _R9
_R9, _R8, _RCX, _RDX, _RSI, _RDI,
_RSP, _RBP,
# define JIT_F0 _XMM8
--
2.23.0
- [Lightning] [PATCH] Export argument registers,
Paul Cercueil <=