diff mbox series

[v4,11/11] disas: nanoMIPS: Fix comments for 48-bit instructions

Message ID 1545671976-13630-12-git-send-email-aleksandar.markovic@rt-rk.com (mailing list archive)
State New, archived
Headers show
Series disas: nanoMIPS: Clean up several issues | expand

Commit Message

Aleksandar Markovic Dec. 24, 2018, 5:19 p.m. UTC 
From: Aleksandar Markovic <amarkovic@wavecomp.com>

Fix comments for 48-bit nanoMIPS instructions:

  - ADDIU[48]
  - ADDIU[GP48]
  - ADDIUPC[48]
  - LI[48]
  - LWPC[48]
  - SWPC[48]

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
---
 disas/nanomips.cpp | 70 ++++++++++++++++++++++++++++--------------------------
 1 file changed, 36 insertions(+), 34 deletions(-)
diff mbox series

Patch

diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp
index a3f997f..21abd1b 100644
--- a/disas/nanomips.cpp
+++ b/disas/nanomips.cpp
@@ -1812,13 +1812,14 @@  std::string NMD::ADDIU_32_(uint64 instruction)
 
 
 /*
+ * ADDIU[48] rt, imm - Add Immediate (Untrapped) (rs = rt)
  *
- *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000          0010000100111111
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     00001
  *     rt -----
- *          rs -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::ADDIU_48_(uint64 instruction)
 {
@@ -1833,13 +1834,14 @@  std::string NMD::ADDIU_48_(uint64 instruction)
 
 
 /*
+ * ADDIU[GP48] rt, imm - Add Immediate (Untrapped) (rs = 28)
  *
- *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000          0010000100111111
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     00010
  *     rt -----
- *          rs -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::ADDIU_GP48_(uint64 instruction)
 {
@@ -2005,14 +2007,14 @@  std::string NMD::ADDIUPC_32_(uint64 instruction)
 
 
 /*
+ * ADDIUPC[48] rt, imm - Add Immediate (Untrapped) to PC
  *
- *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000               x1110000101
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     00011
  *     rt -----
- *          rs -----
- *               rd -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::ADDIUPC_48_(uint64 instruction)
 {
@@ -8712,14 +8714,14 @@  std::string NMD::LI_16_(uint64 instruction)
 
 
 /*
+ * LI[48] rt, s - Load Immediate
  *
- *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000               x1110000101
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     00000
  *     rt -----
- *          rs -----
- *               rd -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::LI_48_(uint64 instruction)
 {
@@ -9280,14 +9282,14 @@  std::string NMD::LWM(uint64 instruction)
 
 
 /*
+ * LWPC[48] rt, address - Load Word PC relative
  *
- *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000               x1110000101
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     01011
  *     rt -----
- *          rs -----
- *               rd -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::LWPC_48_(uint64 instruction)
 {
@@ -15496,14 +15498,14 @@  std::string NMD::SWM(uint64 instruction)
 
 
 /*
- * ADDQH_R.W rd, rt, rs - Add Fractional Words And Shift Right to Halve Results
+ * SWPC[48] rt, address - Load Word PC relative
  *
- *   3         2         1
- *  10987654321098765432109876543210
- *  001000               00010001101
+ *         4         3         2         1
+ *  765432109876543210987654321098765432109876543210
+ *  011000     01111
  *     rt -----
- *          rs -----
- *               rd -----
+ *          s[15:0] ----------------
+ *                         s[31:16] ----------------
  */
 std::string NMD::SWPC_48_(uint64 instruction)
 {